阅读说明：本技术 热传递组合物、方法和系统 (Heat transfer compositions, methods, and systems ) 是由 塞缪尔·F·亚娜莫塔 迈克尔·彼得森 安基特·塞蒂 伊丽莎白·德尔·卡门·维拉贝塞拉 邹扬 于 2018-11-17 设计创作，主要内容包括：本发明包括用于包括制冷应用在内的热交换系统的制冷剂组合物,所述制冷剂组合物包含三氟碘甲烷(CF<Sub>3</Sub>I)；1,1,1,2-四氟丙烯(HFO-1234yf)；二氟甲烷(HFC-32)；以及五氟乙烷(HFC-125)；以及在特定方面中此类组合物作为用于加热和冷却应用的制冷剂R-404A的替代物的用途；以及改装热交换系统,包括被设计用于与R-404A一起使用的系统。(The present invention includes a refrigerant composition for use in heat exchange systems, including refrigeration applications, said refrigerant composition comprising trifluoroiodomethane (CF) 3 I) (ii) a1, 1,1, 2-tetrafluoropropene (HFO-1234 yf); difluoromethane (HFC-32); and pentafluoroethane (HFC-125); and in particular aspects thisUse of a class of compositions as a replacement for refrigerant R-404A for heating and cooling applications; and retrofit heat exchange systems, including systems designed for use with R-404A.)

1. A refrigerant comprising at least about 97% by weight of the following four compounds, wherein each compound is present in the following relative percentages:

32.8 to 42.8% by weight of trifluoroiodomethane (CF)₃I)；

48 to 58 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 to 3.2 ± 0.2% by weight of pentafluoroethane (HFC-125).

2. The refrigerant of claim 1, comprising at least about 98.5% by weight of the following four compounds, the relative amounts of which are set forth in the following list:

36 to 39% by weight of trifluoroiodomethane (CF)₃I)；

51 to 55 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 to 3.2 ± 0.2% by weight of pentafluoroethane (HFC-125).

3. The refrigerant of claim 1 consisting essentially of the following four compounds in the relative amounts listed below:

36 to 39% by weight of trifluoroiodomethane (CF)₃I)；

51 to 55 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 to 3.2 ± 0.2% by weight of pentafluoroethane (HFC-125).

4. The refrigerant of claim 1, consisting of the following four compounds in the relative amounts listed below:

36 to 39% by weight of trifluoroiodomethane (CF)₃I)；

51 to 55 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 to 3.2 ± 0.2% by weight of pentafluoroethane (HFC-125).

5. A refrigerant comprising at least about 97% by weight of the following four compounds, the relative amounts of said compounds being set forth in:

38. + -.1% by weight of trifluoroiodomethane (CF)₃I)；

54 + -1 wt% of 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

5 ± 1% by weight difluoromethane (HFC-32); and

3% by weight of pentafluoroethane (HFC-125).

6. The refrigerant of claim 5, comprising at least about 98.5% by weight of the following four compounds, the relative amounts of which are set forth in:

38. + -.1% by weight of trifluoroiodomethane (CF)₃I)；

54 + -1 wt% of 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

5 ± 1% by weight difluoromethane (HFC-32); and

3 weight percent pentafluoroethane (HFC-125), wherein the refrigerant is non-flammable as determined according to the non-flammability test, and wherein the refrigerant has a GWP of less than 150.

7. The refrigerant of claim 4, wherein the refrigerant is non-flammable as determined according to the non-flammability test, and wherein the refrigerant has a GWP of less than 100.

8. The refrigerant of claim 1 consisting essentially of the following four compounds in the relative amounts listed below:

38. + -.1% by weight of trifluoroiodomethane (CF)₃I)；

54 + -1 wt% of 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

5 ± 1% by weight difluoromethane (HFC-32); and

3% by weight of pentafluoroethane (HFC-125).

9. The refrigerant of claim 1, consisting of the following four compounds in the relative amounts listed below:

38. + -.1% by weight of trifluoroiodomethane (CF)₃I)；

54 + -1 wt% of 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

5 ± 1% by weight difluoromethane (HFC-32); and

3% by weight of pentafluoroethane (HFC-125).

10. A heat transfer composition comprising the refrigerant of claim 7.

11. The heat transfer composition of claim 10 further comprising a stabilizer comprising alkylated naphthalenes and/or diene-based compounds and/or isobutylene.

12. The heat transfer composition of claim 12 further comprising a lubricant selected from the group consisting of: polyol esters (POE), polyalkylene glycols (PAG), PAG oils, silicone oils, mineral oils, Alkylbenzenes (AB), polyvinyl ethers (PVE), and poly (alpha-olefins) (PAO).

13. The heat transfer composition of claim 12 wherein said lubricant is a polyol ester (POE).

14. A method of cooling in a low or medium temperature heat transfer system comprising an evaporator, a condenser and a compressor, the method comprising the steps of:

i) condensing a refrigerant comprising at least about 97% by weight of the following four compounds, wherein each compound is present in the following relative percentages:

32.8 to 42.8% by weight of trifluoroiodomethane (CF)₃I)；

48 to 58 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 to 3.2 ± 0.2% by weight of pentafluoroethane (HFC-125), and

ii) evaporating the composition in the vicinity of the body or article to be cooled, wherein the evaporation temperature of the refrigerant in the heat transfer system is in the range of from about-40 ℃ to about-10 ℃.

15. The method of claim 14, wherein the refrigerant has an evaporation temperature in the range of about-30 ℃ to about 5 ℃.

16. A heat transfer system, comprising:

a compressor, a condenser, an evaporator, a chelating material, and a heat transfer composition, wherein:

(a) the heat transfer composition comprises a POE lubricant and a refrigerant comprising at least about 97 wt.% of the following four compounds, wherein each compound is present in the following relative percentages:

32.8 to 42.8% by weight of trifluoroiodomethane (CF)₃I)；

48 to 58 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 to 3.2 ± 0.2% by weight of pentafluoroethane (HFC-125), and

(b) the chelating material includes:

i. activated alumina, or

A zeolitic molecular sieve comprising copper, silver, lead, or combinations thereof, or

An anion exchange resin, or

A dehumidifying material, or

A combination of two or more of the foregoing.

17. The heat transfer system of claim 16, wherein the heat transfer system is an air-cooled chiller having an evaporator temperature in the range of about 0 ℃ to about 10 ℃, particularly about 4.5 ℃, and wherein the compressor is a positive displacement compressor.

18. The heat transfer system of claim 16, further comprising an oil separator located downstream of the compressor, and wherein the chelating material is located inside the oil separator such that the liquid lubricant is in contact with one or more of the chelating materials during operation of the system.

19. A cooler comprising the heat transfer system of claim 18.

Technical Field

The present invention relates to compositions, methods and systems having utility in refrigeration applications and having particular benefits in medium and low temperature refrigeration applications, and in particular aspects, to refrigerant compositions that replace refrigerant R-404A used for heating and cooling applications in medium and low temperature refrigerant systems, including systems designed for use with R-404A in medium and low temperature refrigerant systems.

Background

Mechanical refrigeration systems employing refrigerant liquids and related heat transfer devices, such as heat pumps and air conditioners, are well known in the art for industrial, commercial and domestic use. Several fluorocarbon based fluids have found widespread use in many residential, commercial and industrial applications, including as working fluids in systems such as air conditioning, heat pump and refrigeration systems. Due to certain suspected environmental problems, including the relatively high global warming potentials associated with the use of certain hydrofluorocarbon ("HFC") based compositions that have heretofore been used in these applications, it has become increasingly desirable to use fluids having lower global warming potentials ("GWPs") in addition to lower or zero ozone depletion potentials, such as hydrofluoroolefins (hereinafter "HFOs"). For example, many governments have signed the kyoto protocol to protect the global environment and proposed reducing CO2 emissions (global warming). Therefore, alternatives to high global warming HFCs are needed.

One important type of refrigeration system is known as a "cryogenic refrigeration system". Such systems are particularly important to the food manufacturing, distribution and retail industries because they play an important role in ensuring that food delivered to the consumer is both fresh and ready for consumption. In such cryogenic refrigeration systems, the refrigerant typically used is HFC-404A or R404A (HFC-125: HFC-143a: HFC134A combination, about 44:52:4 wt%). R-404A has an estimated GWP of 3922.

However, for heat transfer fluids, it is generally considered important that any potential replacement must also have those characteristics that are present in many of the most widely used HFC-based fluids, such as excellent heat transfer characteristics, chemical stability, low or no toxicity, non-flammability, and lubricant compatibility, among others. Furthermore, to avoid retrofitting or redesigning the system, it is desirable that any replacement for R-404A be well matched to the operating conditions of R-404A in such a system.

With respect to usage efficiency, it is important to note that the loss of refrigerant thermodynamic performance or energy efficiency can have secondary environmental impact through the increased use of fossil fuels resulting from increased electrical energy demand. In other words, if another characteristic of the proposed new fluid, such as efficiency of use, results in an indirect increase in environmental emissions, such as by requiring higher fuel combustion to achieve the same level of refrigeration, the proposed new refrigerant with improved GWP and/or ODP relative to existing fluids may still not be as environmentally friendly as the fluid that the new fluid replaces. Thus, it can be seen that the selection of alternative or improved fluids is a complex and challenging endeavor that may not have predictable results.

Furthermore, it is generally considered desirable that HFC refrigerant substitutes be effective without significant engineering changes to conventional vapor compression technology currently used with HFC refrigerants.

For many applications, flammability is another important property. In other words, in some applications, including particularly in certain heat transfer applications, it is considered important or necessary to use a non-flammable composition. One advantage of using a non-flammable refrigerant in a heat transfer system is that no flame suppression devices are required in such systems, thereby mitigating potential risks associated with refrigerant leakage from the system. This advantage is particularly important in systems that would suffer from the secondary disadvantage of increased system weight associated with, for example, transport refrigeration systems.

As used herein, the term "non-flammable" refers to a compound or composition that is determined to be non-flammable, as determined in accordance with ASTM Standard E-681-2009 "Standard test method for Flammability Limits of Chemicals (Vapors and gases)" incorporated by reference herein and referred to herein for convenience as the "non-Flammability test" under the conditions described in ASHRAE Standard 34-2016 "nomenclature and Safety Classification of refrigerants (Designation and Safety Classification of references)" and in appendix B1 of ASHRAE Standard 34-2016. Unfortunately, many materials that may otherwise be desirable for use in refrigerant compositions are not non-flammable (as that term is used herein). For example, the fluoroalkane difluoroethane (HFC-152a) and the fluoroalkene 1,1, 1-trifluoropropene (HFO-1243zf) have flammability characteristics that make their use less preferred in certain applications.

It is critical to maintain system efficiency and proper and reliable operation of the compressor that the lubricant circulating in the vapor compression heat transfer system be returned to the compressor to perform its intended lubrication function. Otherwise, lubricant may accumulate and reside in the coils and tubes of the system, including the heat transfer components. In addition, when lubricant accumulates on the inner surfaces of the evaporator, it reduces the heat exchange efficiency of the evaporator, thereby reducing the efficiency of the system. For these reasons, for many systems, it is desirable that the refrigerant be miscible with the lubricant used in the system, at least over the operating temperature range of the system. Because R-404A is currently commonly used with polyol ester (POE) lubricants, the proposed alternative refrigerant is advantageously miscible with POE lubricants over the temperature range of the system and with respect to the concentration of lubricant present in the system, especially over the operating temperature range of the condenser and evaporator. Accordingly, applicants have recognized a need for highly advantageous compositions, particularly heat transfer compositions, in heating and cooling systems and methods, particularly medium and low temperature refrigeration systems, and even more particularly medium and low temperature refrigeration systems including medium and low temperature transport refrigeration systems, which systems have been designed for use with or are adapted for use with R-404A.

Disclosure of Invention

Applicants have found that the compositions of the present invention meet the need for alternatives and/or replacements for refrigerants commonly used in heat transfer applications in an advantageous and unexpected manner. In particular, the present invention provides heat transfer fluids, heat transfer methods, and heat transfer systems that in preferred embodiments exhibit a desirable combination of excellent heat transfer characteristics, including cooling efficiency and capacity that are highly matched to R-404A in such systems, chemical stability, low or no toxicity, non-flammability, lubricant miscibility, and lubricant compatibility in combination with low Global Warming Potential (GWP) and near zero ODP.

The present invention includes a refrigerant comprising at least about 98.5% by weight of the following four compounds, wherein each compound is present in the following relative percentages:

32.8 to 42.8% by weight of trifluoroiodomethane (CF)₃I)；

48 to 58 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 + -0.2 wt.% to 3.2 + -0.2 wt.% pentafluoroethane (HFC-125). The refrigerant as described in this paragraph is sometimes referred to as refrigerant 1 for convenience.

The present invention includes a refrigerant comprising at least about 99.5% by weight of the following four compounds, wherein each compound is present in the following relative percentages:

32.8 to 42.8% by weight of trifluoroiodomethane (CF)₃I)；

48 to 58 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 + -0.2 wt.% to 3.2 + -0.2 wt.% pentafluoroethane (HFC-125). The refrigerant as described in this paragraph is sometimes referred to as refrigerant 2 for convenience.

The present invention includes a refrigerant consisting essentially of the following four compounds, wherein each compound is present in the following relative percentages:

32.8 to 42.8% by weight of trifluoroiodomethane (CF)₃I)；

48 to 58 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 + -0.2 wt.% to 3.2 + -0.2 wt.% pentafluoroethane (HFC-125). The refrigerant as described in this paragraph is sometimes referred to as refrigerant 3 for convenience.

The present invention includes a refrigerant consisting of the following four compounds, wherein each compound is present in the following relative percentages:

32.8 to 42.8% by weight of trifluoroiodomethane (CF)₃I)；

48 to 58 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 to 3.2 ± 0.2% by weight of pentafluoroethane (HFC-125). The refrigerant as described in this paragraph is sometimes referred to as refrigerant 4 for convenience.

The present invention includes a refrigerant comprising at least about 99.5% by weight of the following four compounds, wherein each compound is present in the following relative percentages:

about 38% by weight trifluoroiodomethane (CF 3I);

about 54 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

5% ± 0.5% by weight difluoromethane (HFC-32); and

1 + -0.2 wt.% to 3.2 + -0.2 wt.% pentafluoroethane (HFC-125). The refrigerant as described in this paragraph is sometimes referred to as refrigerant 5 for convenience.

The present invention includes a refrigerant consisting essentially of the following four compounds, wherein each compound is present in the following relative percentages:

about 38% by weight trifluoroiodomethane (CF 3I);

about 54 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

5% ± 0.5% by weight difluoromethane (HFC-32); and

1 + -0.2 wt.% to 3.2 + -0.2 wt.% pentafluoroethane (HFC-125). The refrigerant as described in this paragraph is sometimes referred to as refrigerant 6 for convenience.

The present invention includes a refrigerant consisting of the following four compounds, wherein each compound is present in the following relative percentages:

about 38% by weight trifluoroiodomethane (CF 3I);

about 54 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

5% ± 0.5% by weight difluoromethane (HFC-32); and

1 + -0.2 wt.% to 3.2 + -0.2 wt.% pentafluoroethane (HFC-125). The refrigerant as described in this paragraph is sometimes referred to as refrigerant 7 for convenience.

The present invention includes a refrigerant comprising at least about 98.5% by weight of the following four compounds, wherein each compound is present in the following relative percentages:

32.8 to 42.8% by weight of trifluoroiodomethane (CF)₃I)；

48 to 58 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 + 0.2 wt% to 3.2 + 0.2 wt% pentafluoroethane (HFC-125), wherein the refrigerant is non-flammable as determined according to the non-flammability test, and wherein the refrigerant has a GWP of less than 150. The refrigerant as described in this paragraph is sometimes referred to as refrigerant 8 for convenience.

The present invention includes a refrigerant comprising at least about 99.5% by weight of the following four compounds, wherein each compound is present in the following relative percentages:

32.8 to 42.8% by weight of trifluoroiodomethane (CF)₃I)；

48 to 58 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 + 0.2 wt% to 3.2 + 0.2 wt% pentafluoroethane (HFC-125), wherein the refrigerant is non-flammable as determined according to the non-flammability test, and wherein the refrigerant has a GWP of less than 150. The refrigerant as described in this paragraph is sometimes referred to as refrigerant 9 for convenience.

The present invention includes a refrigerant comprising at least about 98.5% by weight of the following four compounds, wherein each compound is present in the following relative percentages:

about 38% by weight of trifluoroiodomethane (CF)₃I)；

About 54 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

5% ± 0.5% by weight difluoromethane (HFC-32); and

1 + 0.2 wt% to 3.2 + 0.2 wt% pentafluoroethane (HFC-125), wherein the refrigerant is non-flammable as determined according to the non-flammability test, and wherein the refrigerant has a GWP of less than 150. The refrigerant as described in this paragraph is sometimes referred to as refrigerant 10 for convenience.

The present invention includes a refrigerant consisting essentially of the following four compounds, wherein each compound is present in the following relative percentages:

36 to 39% by weight of trifluoroiodomethane (CF)₃I)；

51 to 55 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 + -0.2 wt.% to 3.2 + -0.2 wt.% pentafluoroethane (HFC-125). The refrigerant as described in this paragraph is sometimes referred to as refrigerant 11 for convenience.

The present invention includes a refrigerant consisting of the following four compounds, wherein each compound is present in the following relative percentages:

36 to 39% by weight of trifluoroiodomethane (CF)₃I)；

51 to 55 weight percent 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

2 to 6% by weight of difluoromethane (HFC-32); and

1 + -0.2 wt.% to 3.2 + -0.2 wt.% pentafluoroethane (HFC-125). The refrigerant as described in this paragraph is sometimes referred to as refrigerant 12 for convenience.

The present invention includes a refrigerant consisting essentially of the following four compounds, wherein each compound is present in the following relative percentages:

38. + -.1% by weight of trifluoroiodomethane (CF)₃I)；

54 + -1 wt% of 1,1,1, 2-tetrafluoropropene (HFO-1234 yf);

5 ± 1% by weight difluoromethane (HFC-32); and

3% ± 0.2% by weight pentafluoroethane (HFC-125). The refrigerant as described in this paragraph is sometimes referred to as refrigerant 13 for convenience.

Drawings

FIG. 1 is a schematic diagram of an exemplary heat transfer system that may be used for low and medium temperature refrigeration, and which includes a vapor injector.

FIG. 2 is a schematic diagram of an exemplary heat transfer system that may be used for low and medium temperature refrigeration, and which includes a liquid ejector.

FIG. 3 is a schematic diagram of an exemplary heat transfer system that may be used for low and medium temperature refrigeration and which includes a suction line/liquid line heat exchanger.

Detailed Description

Definition of：

For the purposes of the present invention, the term "about" with respect to amounts expressed as weight percent means that the amount of a component can vary by an amount of +/-2 weight percent.

For the purposes of this invention, the term "about" with respect to temperature in degrees Celsius (C.) means that the temperature can vary by an amount of +/-5℃.

The term "capacity" is the amount of cooling (in BTUs per hour) provided by the refrigerant in the refrigeration system. This is determined experimentally by multiplying the change in enthalpy (in BTU/lb) of the refrigerant as it passes through the evaporator by the mass flow rate of the refrigerant. Enthalpy can be determined from measurements of the pressure and temperature of the refrigerant. The capacity of a refrigeration system relates to the ability to keep a zone cool to a particular temperature. The capacity of a refrigerant represents the amount of cooling or heating it provides and provides some measure of the compressor's ability to pump heat for a given volumetric flow of refrigerant. In other words, a refrigerant with a higher capacity will deliver more cooling or heating power given a particular compressor.

The phrase "coefficient of performance" (hereinafter "COP") is a generally accepted measure of refrigerant performance, and is particularly useful in expressing the relative thermodynamic efficiency of a refrigerant in a particular heating or cooling cycle involving evaporation or condensation of the refrigerant. In refrigeration engineering, the term denotes the ratio of available refrigeration or cooling capacity to the energy applied by the compressor when compressing a vapor, and thus the ability of a given compressor to pump heat for a given volumetric flow rate of a heat transfer fluid (such as a refrigerant). In other words, a refrigerant with a higher COP will deliver more cooling or heating power given a particular compressor. One method for estimating the COP of a refrigerant under specific operating conditions is from the thermodynamic properties of the refrigerant using standard refrigeration cycle analysis techniques (see, e.g., r.c. downing, fluor corpon REFRIGERANTS HANDBOOK, chapter 3, prentic-Hall, 1988, which is incorporated herein by reference in its entirety).

The phrase "discharge temperature" refers to the temperature of the refrigerant at the compressor outlet. The advantage of a low discharge temperature is that it allows the use of existing equipment without activating the thermal protection aspect of the system, which is preferably designed to protect the compressor components and avoid the use of expensive control measures (e.g. injection of liquid) to lower the discharge temperature.

The phrase "global warming potential" (hereinafter "GWP") was established to allow comparison of the global warming effect of different gases. In particular, it is a measure of how much energy one ton of gas emitted will absorb in a given period of time relative to one ton of carbon dioxide emitted. The greater the GWP, the warmer the given gas will be in the earth over that time period as compared to CO 2. The time period typically used for GWP is 100 years. GWP provides a general metric-allowing analysts to accumulate emission estimates for different gases. See http:// www.protocolodemontreal.org.br/site/images/publications/operator _ manual _ instructions _ refrarerance _ autocondiciado/com _ computer _ el _ potential _ de _ calcium _ assessment _ movement _ en _ las _ mezclas _ de _ recovery

The term "occupational contact Limit (OEL)" is determined in accordance with ASHRAE Standard 34-2016 "nomenclature and Safety Classification of Refrigerants (signatures and Safety Classification of reflagers)".

As used herein, the term "alternative" means the composition of the present invention used in a heat transfer system designed for use with, or generally with, another refrigerant, or adapted for use with another refrigerant. By way of example, when the refrigerant or heat transfer composition of the present invention is used in a heat transfer system designed for use with R-404A, then the refrigerant or heat transfer composition of the present invention is an alternative to R-404A in such a system. Thus, it should be understood that the term "alternative" includes the refrigerant and heat transfer compositions of the present invention used in both new and existing systems designed for use with R-404A, typically R-404A, or suitable for use with R-404A.

The phrase "thermodynamic slip" applies to a zeotropic refrigerant mixture having a changing temperature during a phase change process in an evaporator or condenser at a constant pressure.

The term "cryogenic refrigeration system" refers to a heat transfer system operating at a condensing temperature of about 20 ℃ to about 60 ℃ and an evaporating temperature of about-45 ℃ up to and including-12 ℃.

The term "medium temperature refrigeration system" refers to a heat transfer system that operates at a condensing temperature of about 20 ℃ to about 60 ℃ and an evaporating temperature of-12 ℃ to about 0 ℃.

As used herein, the term "supermarket refrigeration" refers to commercial refrigeration systems used to hold refrigerated or frozen food products in both product display cases and storage refrigerators.

As used herein, the term "transport refrigeration" refers to refrigeration systems used to transport refrigerated or frozen products by means of trucks, trailers, vans, intermodal containers, and cargo boxes. The term also includes the use of refrigeration and air conditioning on commercial ships, warships and fishing vessels in excess of about 100 total tons (GT) (lengths in excess of about 24 m).

Refrigerant and heat transfer compositions

Applicants have found that refrigerants of the present invention, including each of refrigerants 1 through 13 as described herein, can provide particularly advantageous properties, including: heat transfer characteristics; low or no toxicity; non-flammability; near zero ozone depletion potential ("ODP"); and lubricant compatibility, including miscibility with POE lubricants over the operating temperature and concentration ranges used in low and medium temperature refrigeration systems; and low GWP; particularly as a replacement for R-404A in low and medium temperature refrigeration systems including existing R-404A transport refrigeration systems, existing 404A commercial refrigeration systems, existing 404A supermarket refrigeration systems, existing 404A self-contained refrigeration systems, existing R-404A industrial refrigeration systems, existing R-404A plug-in vending machines, existing R-404A vapor injection refrigeration systems, and existing R-404A liquid injection refrigeration systems.

A particular advantage of the refrigerants of the present invention is that they are non-flammable when tested according to the non-flammability test defined herein. The skilled artisan will appreciate that flammability of the refrigerant is an important feature for certain important heat transfer applications. Accordingly, it would be desirable in the art to provide a refrigerant composition that: it is useful as an alternative to R-404A, which has excellent heat transfer characteristics, low or no toxicity, near zero ODP, and lubricant compatibility, including miscibility with POE lubricants over the operating temperature and concentration ranges used in low and medium temperature refrigeration systems, and which remains non-flammable in use. This desirable advantage is met by the refrigerant of the present invention.

Applicants have found that the refrigerant compositions of the present invention are capable of achieving a combination of properties that are difficult to achieve, including a particularly low GWP. Thus, the compositions of the present invention have a GWP of less than 150, and preferably less than 100.

In addition, the refrigerant compositions of the present invention have a low ODP. Thus, the compositions of the present invention have an ODP of no greater than 0.05, preferably no greater than 0.02, and more preferably about zero.

In addition, the refrigerant compositions of the present invention show acceptable toxicity, and preferably have an OEL greater than about 400. As known to those skilled in the art, a non-flammable refrigerant having an OEL greater than about 400 is advantageous because it results in the refrigerant being classified as class a as desired in ASHRAE standard 34.

Applicants have found that heat transfer compositions of the present invention, including heat transfer compositions comprising each of refrigerants 1 through 13 as described herein, can provide particularly advantageous properties, including: heat transfer characteristics; chemical stability under conditions of use; low or no toxicity; non-flammability; near zero ozone depletion potential ("ODP"); and lubricant compatibility, including miscibility with POE lubricants over the operating temperature and concentration ranges used in low and medium temperature refrigeration systems; and low GWP; particularly as a replacement for R-404A in low and medium temperature refrigeration systems including existing R-404A transport refrigeration systems, existing 404A commercial refrigeration systems, existing 404A supermarket refrigeration systems, existing 404A self-contained refrigeration systems, existing R-404A industrial refrigeration systems, existing R-404A plug-in vending machines, existing R-404A vapor injection refrigeration systems, and existing R-404A liquid injection refrigeration systems.

The heat transfer composition can consist essentially of any refrigerant of the present invention, including each of refrigerants 1 through 13.

The heat transfer composition of the present invention can be comprised of any of the refrigerants of the present invention, including each of refrigerants 1 through 13.

The heat transfer compositions of the present invention may include other components to enhance or provide specific functions to these compositions. Such other components may include one or more of lubricants, dyes, solubilizers, compatibilizers, stabilizers, antioxidants, corrosion inhibitors, extreme pressure additives, and anti-wear additives.

Lubricant agent

The heat transfer compositions of the present invention specifically comprise a refrigerant (including each of refrigerants 1 through 13) and a lubricant as discussed herein. Applicants have found that heat transfer compositions of the present invention, including those comprising a lubricant (particularly a POE lubricant) and each of refrigerants 1 through 13 as described herein, are capable of providing particularly advantageous properties, including excellent refrigerant/lubricant compatibility, including miscibility with POE lubricant over the operating temperature and concentration ranges used in low and medium temperature refrigeration systems, including low and medium temperature transport refrigeration systems, commercial refrigeration systems, supermarket refrigeration systems, self-contained refrigeration systems, industrial refrigeration systems, and plug-in vending machines, in addition to the advantageous properties identified herein for refrigerants, particularly as a substitute for R-404A in low and medium temperature refrigeration systems.

Generally, the heat transfer compositions of the present invention comprising a lubricant comprise a lubricant, preferably in an amount of from about 0.1 to about 5 wt.%, or from 0.1 to about 1 wt.%, or from 0.1 to about 0.5 wt.%, based on the weight of the heat transfer composition.

Common refrigerant lubricants used in refrigeration machinery such as polyol esters (POE), polyalkylene glycols (PAG), silicone oils, mineral oils, Alkylbenzenes (AB), polyvinyl ethers (PVE), Polyethers (PE), and poly (alpha-olefins) (PAO) may be used in the refrigerant composition of the present invention.

Preferably, the lubricant is selected from POE, mineral oil, AB, PVE, and PE.

Preferably, the lubricant is POE.

Generally, the heat transfer compositions of the present invention comprising a POE lubricant comprise a POE lubricant, preferably in an amount of from about 0.1 wt.% to about 5 wt.%, or from 0.1 wt.% to about 1 wt.%, or from 0.1 wt.% to about 0.5 wt.%, based on the weight of the heat transfer composition.

Commercially available POEs that are preferred for use in the heat transfer compositions of the present invention include neopentyl glycol dipelargonate, which is available as Emery2917 (registered trademark) and Hatcol 2370 (registered trademark), and pentaerythritol derivatives, including those sold by CPI Fluid Engineering under the tradenames Emkarate RL32-3MAF and Emkarate RL 68H. Emkarate RL32-3MAF and Emkarate RL68H are preferred POE lubricants with the properties identified below:

commercially available polyvinyl ethers preferred for use in the heat transfer compositions of the present invention include those lubricants sold under the tradenames FVC32D and FVC68D by Idemitsu.

Commercially available mineral oils that are preferred for use in the heat transfer compositions of the present invention include Witco LP250 (registered trademark) from Witco, from Winteridae, Suniso 3GS from Winteridae, and Calumetr015 from Calumet. Commercially available alkylbenzene lubricants include Zerol 150 (registered trademark) and Zerol available from Mobil Chemical industry (Shrieve Chemical)

A preferred heat transfer composition comprises refrigerant 1 and POE lubricant.

A preferred heat transfer composition comprises refrigerant 2 and POE lubricant.

A preferred heat transfer composition comprises refrigerant 3 and POE lubricant.

A preferred heat transfer composition comprises refrigerant 4 and POE lubricant.

A preferred heat transfer composition comprises refrigerant 5 and POE lubricant.

A preferred heat transfer composition comprises refrigerant 6 and POE lubricant.

A preferred heat transfer composition comprises refrigerant 7 and POE lubricant.

A preferred heat transfer composition comprises refrigerant 8 and POE lubricant.

A preferred heat transfer composition comprises refrigerant 9 and POE lubricant.

A preferred heat transfer composition comprises refrigerant 10 and POE lubricant.

A preferred heat transfer composition comprises refrigerant 11 and POE lubricant.

A preferred heat transfer composition comprises refrigerant 12 and a POE lubricant.

A preferred heat transfer composition comprises refrigerant 13 and POE lubricant.

A lubricant consisting essentially of POE having a viscosity of about 30 to about 70 at 40 ℃ as measured according to ASTM D445 is referred to herein as lubricant 1.

A preferred heat transfer composition comprises refrigerant 1 and lubricant 1.

A preferred heat transfer composition comprises refrigerant 2 and lubricant 1.

A preferred heat transfer composition comprises refrigerant 3 and lubricant 1.

A preferred heat transfer composition comprises refrigerant 4 and lubricant 1.

A preferred heat transfer composition comprises refrigerant 5 and lubricant 1.

A preferred heat transfer composition comprises refrigerant 6 and lubricant 1.

A preferred heat transfer composition comprises refrigerant 7 and lubricant 1.

A preferred heat transfer composition comprises refrigerant 8 and lubricant 1.

A preferred heat transfer composition comprises refrigerant 9 and lubricant 1.

A preferred heat transfer composition comprises a refrigerant 10 and a lubricant 1.

A preferred heat transfer composition comprises refrigerant 11 and lubricant 1.

A preferred heat transfer composition comprises refrigerant 12 and lubricant 1.

A preferred heat transfer composition comprises refrigerant 13 and lubricant 1.

A lubricant consisting essentially of POE having a viscosity of from about 30 to about 70 at 40 ℃ as measured according to ASTM D445 and present in an amount of from about 0.1% to about 1% based on the weight of the heat transfer composition is referred to herein as lubricant 2.

A preferred heat transfer composition comprises refrigerant 1 and lubricant 2.

A preferred heat transfer composition comprises refrigerant 2 and lubricant 2.

A preferred heat transfer composition comprises refrigerant 3 and lubricant 2.

A preferred heat transfer composition comprises refrigerant 4 and lubricant 2.

A preferred heat transfer composition comprises refrigerant 5 and lubricant 2.

A preferred heat transfer composition comprises refrigerant 6 and lubricant 2.

A preferred heat transfer composition comprises refrigerant 7 and lubricant 2.

A preferred heat transfer composition comprises refrigerant 8 and lubricant 2.

A preferred heat transfer composition comprises refrigerant 9 and lubricant 2.

A preferred heat transfer composition comprises refrigerant 10 and lubricant 2.

The preferred heat transfer composition comprises refrigerant 11 and lubricant 2.

A preferred heat transfer composition comprises refrigerant 12 and lubricant 2.

A preferred heat transfer composition comprises refrigerant 13 and lubricant 2.

Preferred heat transfer compositions comprise a refrigerant of the present invention (including each of refrigerants 1 through 13) and from about 0.1% to about 5%, or from about 0.1% to about 1%, or from about 0.1% to about 0.5% of a lubricant, wherein the percentages are based on the weight of lubricant in the heat transfer composition.

Preferred heat transfer compositions comprise a refrigerant of the present invention (including each of refrigerants 1 through 13) and from about 0.1% to about 5%, or from about 0.1% to about 1%, or from about 0.1% to about 0.5%, of a POE lubricant, wherein the percentages are based on the weight of lubricant in the heat transfer composition.

Preferred heat transfer compositions comprise a refrigerant of the present invention (including each of refrigerants 1 through 13) and from about 0.1% to about 5%, or from about 0.1% to about 1%, of lubricant 1, wherein the percentages are based on the weight of lubricant in the heat transfer composition.

A lubricant consisting essentially of POE having a viscosity of from about 30 to about 70 at 40 ℃ as measured according to ASTM D445 and present in an amount of from about 0.1% to about 0.5% based on the weight of the heat transfer composition is referred to herein as lubricant 3.

A lubricant consisting essentially of POE having a viscosity of from about 30 to about 70 at 40 ℃ as measured according to ASTM D445 and present in an amount of from about 0.1% to about 0.5% based on the weight of the heat transfer composition is referred to herein as lubricant 4.

Stabilizer：

The heat transfer compositions of the present invention specifically comprise a refrigerant (including each of refrigerants 1 through 13) and a stabilizer as discussed herein. Applicants have found that the heat transfer compositions of the present invention, including heat transfer compositions comprising a stabilizer and each of refrigerants 1 through 13 as described herein, are capable of providing particularly advantageous properties, which, in addition to the advantageous properties identified herein with respect to the refrigerant, also includes chemical stability over the operating temperature and concentration ranges used in low and medium temperature refrigeration systems, particularly as a replacement for R-404A in low and medium temperature refrigeration systems, the low and medium temperature refrigeration systems include existing R-404A transport refrigeration systems, existing 404A commercial refrigeration systems, existing 404A supermarket refrigeration systems, existing 404A self-contained refrigeration systems, existing R-404A industrial refrigeration systems, existing R-404A plug-in vending machines, existing R-404A vapor injection refrigeration systems, and existing R-404A liquid injection refrigeration systems.

In a preferred embodiment, the stabilizer comprises one or more of an alkylated naphthalene compound, a diene-based compound, a phenol-based compound, and isobutylene. Other compounds that may be used in the stabilizer include phosphorus-based compounds, nitrogen-based compounds, and epoxy compounds. Preferred compounds within each of these groups are described below.

Alkylated naphthalenes

Applicants have surprisingly and unexpectedly found that alkylated naphthalenes are highly effective as stabilizers for heat transfer compositions of the present invention. As used herein, the term "alkylated naphthalene" refers to a compound having the structure:

wherein R is₁To R₈Each independently selected from the group consisting of a straight chain alkyl group, a branched alkyl group, and hydrogen. The specific length of the alkyl chain and mixtures of branched and straight chains with hydrogen may vary within the scope of the present invention, and those skilled in the art will recognize and appreciate that such variations reflect the physical characteristics of the alkylated naphthalene, including in particular the viscosity of the alkylated compound, and that manufacturers of such materials generally refer to one or more of such characteristics as a particular R groupThe alternative specifications of (a) to define materials.

Applicants have found that unexpected, surprising and advantageous results are associated with the use of alkylated naphthalenes according to the present invention as stabilizers with the following characteristics, and for convenience, alkylated naphthalene compounds having said characteristics are referred to herein as alkylated naphthalenes 1 through alkylated naphthalenes 5, as shown in lines 1 through 5, respectively, of the alkylated naphthalene characteristics of table 1 below:

characterization of alkylated naphthalenes Table 1

As used herein, the term "about" means +/-4cSt, in conjunction with viscosity at 40 ℃ as measured according to ASTM D445.

As used herein, the term "about" means +/-0.4cSt, in conjunction with viscosity at 100 ℃ as measured according to ASTM D445.

As used herein, the term "about" means +/-5 ℃ in conjunction with a pour point measured according to ASTM D97.

Applicants have also found that unexpected, surprising and advantageous results are associated with the use of alkylated naphthalenes according to the present invention as stabilizers with the following characteristics, and for convenience, alkylated naphthalene compounds having the characteristics are referred to herein as alkylated naphthalenes 6 through alkylated naphthalenes 10, as shown in lines 6 through 10, respectively, of the alkylated naphthalene characteristics of table 2 below:

characterization of alkylated naphthalenes Table 2

Examples of alkylated naphthalenes within the meaning of alkylated naphthalene 1 through alkylated naphthalene 6 include those sold by kingdom industries (KingIndustries) under the following trade names: NA-LUBE KR-007A; KR-008, KR-009; KR-015; KR-019; KR-005 FG; KR-015 FG; and KR-029 FG.

Examples of alkylated naphthalenes within the meaning of alkylated naphthalene 2 and alkylated naphthalene 7 include those sold by the King industries under the following tradenames: NA-LUBE KR-007A; KR-008, KR-009; and KR-005 FG.

Examples of alkylated naphthalenes within the meaning of alkylated naphthalene 5 and alkylated naphthalene 10 include the product sold by King industries under the name NA-LUBE KR-008.

Alkylated naphthalenes are preferably in the heat transfer compositions of the invention comprising the refrigerants of the invention (including each of refrigerants 1 through 13), where the alkylated naphthalene is present in an amount of 0.01% to about 10%, or about 1.5% to about 4.5%, or about 2.5% to about 3.5%, where these amounts are weight percentages based on the amount of alkylated naphthalene plus refrigerant.

Diene-based compound

The diene-based compound may include compounds formed by reaction of a C3 to C15 diene and to any two or more C3 to C4 dienes. Preferably, the diene-based compound is selected from the group consisting of allyl ethers, allenes, butadienes, isoprenes, and terpenes. The diene-based compound is preferably a terpene including, but not limited to, rutinene, retinal, geraniol, terpinene, 3-carene, terpinolene, phellandrene, fenchene, myrcene, farnesene, pinene, nerol, citral, camphor, menthol, limonene, nerolidol, phytol, carnosic acid, and vitamin a 1. Preferably, the stabilizing agent is farnesene. Preferred terpene stabilizers are disclosed in U.S. provisional patent application 60/638,003, filed on 12.12.2004 as published in US2006/0167044a1, which is incorporated herein by reference. Further, the diene-based compound can be provided in the heat transfer composition in an amount of greater than 0 wt% and preferably from 0.0001 wt% to about 5 wt%, preferably from 0.001 wt% to about 2.5 wt%, and more preferably from 0.01 wt% to about 1 wt%. In each case, weight percent refers to the weight of the one or more diene-based compounds plus refrigerant in the heat transfer composition.

Phenol-based compounds

The phenol-based compound may be one or more compounds selected from the group consisting of: 4,4' -methylenebis (2, 6-di-tert-butylphenol); 4,4' -bis (2, 6-di-tert-butylphenol); 2, 2-or 4, 4-biphenyldiols including 4,4' -bis (2-methyl-6-tert-butylphenol); derivatives of 2, 2-or 4, 4-biphenyldiol; 2,2' -methylenebis (4-ethyl-6-tert-butylphenol); 2,2' -methylenebis (4-methyl-6-tert-butylphenol); 4, 4-butylidenebis (3-methyl-6-tert-butylphenol); 4, 4-isopropylidenebis (2, 6-di-tert-butylphenol); 2,2' -methylenebis (4-methyl-6-nonylphenol); 2,2' -isobutylidene bis (4, 6-dimethylphenol); 2,2' -methylenebis (4-methyl-6-cyclohexylphenol); 2, 6-di-tert-butyl-4-methylphenol (BHT); 2, 6-di-tert-butyl-4-ethylphenol: 2, 4-dimethyl-6-tert-butylphenol; 2, 6-di-tert-alpha-dimethylamino-p-cresol; 2, 6-di-tert-butyl-4 (N, N' -dimethylaminomethylphenol); 4,4' -thiobis (2-methyl-6-tert-butylphenol); 4,4' -thiobis (3-methyl-6-tert-butylphenol); 2,2' -thiobis (4-methyl-6-tert-butylphenol); bis (3-methyl-4-hydroxy-5-tert-butylbenzyl) sulfide; bis (3, 5-di-tert-butyl-4-hydroxybenzyl) sulfide, tocopherol, hydroquinone, 2',6,6' -tetra-tert-butyl-4, 4' -methylenediphenol and tert-butylhydroquinone, and preferably BHT.

The phenolic compound can be provided in the heat transfer composition in an amount of greater than 0 wt% and preferably from 0.0001 wt% to about 5 wt%, preferably from 0.001 wt% to about 2.5 wt%, and more preferably from 0.01 wt% to about 1 wt%. In each case, weight percent refers to the weight of the one or more phenol-based compounds plus refrigerant in the heat transfer composition.

Phosphorus-based compounds

The phosphorus compound may be a phosphite or phosphate compound. For the purposes of the present invention, the phosphite compounds may be diaryl, dialkyl, triaryl and/or trialkyl phosphites, and/or mixed aryl/alkyl di-or tri-substituted phosphites, in particular selected from one or more of the following compounds: hindered phosphites, tri- (di-tert-butylphenyl) phosphite, di-n-octyl phosphite, isooctyldiphenyl phosphite, isodecyldiphenylphosphite, triisodecyldiphenylphosphate, triphenyl phosphite and diphenyl phosphite, especially diphenyl phosphite. The phosphate compound may be a triaryl phosphate, a trialkyl phosphate, an alkyl phosphate of mono-acid type (alkyl mono-acid phosphate), an aryl phosphate of diacid type (aryl di-acid phosphate), an amine phosphate, preferably a triaryl phosphate and/or a trialkyl phosphate, especially tri-n-butyl phosphate.

The phosphorus compound can be provided in the heat transfer composition in an amount greater than 0 wt% and preferably from 0.0001 wt% to about 5 wt%, preferably from 0.001 wt% to about 2.5 wt%, and more preferably from 0.01 wt% to about 1 wt%. By weight in each case is meant the weight of the one or more phosphorus-based compounds plus refrigerant in the heat transfer composition.

Nitrogen compound

When the stabiliser comprises a nitrogen compound, the stabiliser may comprise an amine-based compound such as one or more secondary or tertiary amines selected from diphenylamine, p-phenylenediamine, triethylamine, tributylamine, diisopropylamine, triisopropylamine and triisobutylamine the amine-based compound may be an amine antioxidant such as a substituted piperidine compound, i.e. a derivative of an alkyl-substituted piperidinyl group (piperidyl), piperidinyl group (piperidinyl), piperazinone or alkoxypiperidinyl group, in particular one or more amine antioxidants selected from 2,2,6, 6-tetramethyl-4-piperidone, 2,2,6, 6-tetramethyl-4-piperidinol, bis (1,2,2,6, 6-pentamethylpiperidinyl) sebacate, bis (2,2,6, 6-tetramethyl-4-piperidinyl) sebacate, poly (N-hydroxyethyl-2, 2,6, 6-tetramethyl-4-hydroxypiperidinyl succinate), alkylated p-phenylenediamine such as N-phenyl-N ' - (1, 3-dimethyl-butyl) -p-phenylenediamine or N ' -dibutylamine, such as N-butyl-phenylenediamine and N, p-phenylenediamine, N ' -di-butyl-phenylenediamine, or bis-naphthylhydroxylamine, α, or bis-methyl-or a salt of a phenol765(Ciba)、1944(Mayzo Inc) and1770(Mayzo Inc. for the purposes of the present invention, the amine-based compound may also be one or more of an alkyl diphenylamine such as bis (nonyl aniline), a dialkylamine such as (N- (1-methylethyl) -2-propylamine, or phenyl- α -naphthylamine (PANA), alkyl-phenyl- α -naphthyl-amine (APANA), and bis (nonylphenyl) amine preferably, the amine-based compound is one or more of phenyl- α -naphthylamine (PANA), alkyl-phenyl- α -naphthyl-amine (APANA), and bis (nonylphenyl) amine, and more preferably, phenyl- α -naphthylamine (PANA).

Alternatively, or in addition to the nitrogen compounds specified above, one or more compounds selected from dinitrobenzene, nitrobenzene, nitromethane, nitrosobenzene, and TEMPO [ (2,2,6, 6-tetramethylpiperidin-1-yl) oxy ] may be used as the stabilizer.

The nitrogen compound can be provided in the heat transfer composition in an amount of greater than 0 wt.% and from 0.0001 wt.% to about 5 wt.%, preferably from 0.001 wt.% to about 2.5 wt.%, and more preferably from 0.01 wt.% to about 1 wt.%. In each case, weight percent refers to the weight of the one or more nitrogen-based compounds plus refrigerant in the heat transfer composition.

Isobutene

Isobutylene can be provided in the heat transfer composition in an amount greater than 0 wt.% and from 0.0001 wt.% to about 5 wt.%, preferably from 0.001 wt.% to about 2.5 wt.%, and more preferably from 0.01 wt.% to about 1 wt.%. In each case, weight percent refers to the weight of isobutylene plus refrigerant in the heat transfer composition.

Epoxides and the like

Useful epoxides include aromatic epoxides, alkyl epoxides, and alkenyl epoxides.

Combination of stabilizers

Preferably, the heat transfer composition comprises a refrigerant of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising a diene-based compound and an alkylated naphthalene. The stabilizer as described in this paragraph is referred to herein as stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 1 and a stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 2 and a stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 3 and a stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 4 and a stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 5 and a stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 6 and a stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 7 and a stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 8 and a stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 9 and a stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 10 and a stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 11 and a stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 12 and a stabilizer 1.

The heat transfer composition of the present invention may preferably comprise a refrigerant 13 and a stabilizer 1.

Preferably, the heat transfer composition comprises a refrigerant of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising a diene-based compound, an alkylated naphthalene selected from alkylated naphthalene 1, and a phenol-based compound. The stabilizer as described in this paragraph is referred to herein as stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 1 and a stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 2 and a stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 3 and a stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 4 and a stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 5 and a stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 6 and a stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 7 and a stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 8 and a stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 9 and a stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 10 and a stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 11 and a stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 12 and a stabilizer 2.

The heat transfer composition of the present invention may preferably comprise a refrigerant 13 and a stabilizer 2.

Preferably, the heat transfer composition comprises a refrigerant of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising farnesene, and alkylated naphthalene 4 and BHT. The stabilizer as described in this paragraph is referred to herein as stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 1 and a stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 2 and a stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 3 and a stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 4 and a stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 5 and a stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 6 and a stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 7 and a stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 8 and a stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 9 and a stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 10 and a stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 11 and a stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 12 and a stabilizer 3.

The heat transfer composition of the present invention may preferably comprise a refrigerant 13 and a stabilizer 3.

The heat transfer composition may comprise a refrigerant of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising farnesene, and an alkylated naphthalene selected from alkylated naphthalene 1 and BHT. The stabilizer as described in this paragraph is referred to herein as stabilizer 4.

The heat transfer composition can comprise a refrigerant of the present invention (including each of refrigerants 1 through 13), and a stabilizer composition consisting essentially of farnesene, alkylated naphthalene 5 and BHT. The stabilizer as described in this paragraph is referred to herein as stabilizer 5.

The heat transfer composition may comprise a refrigerant of the present invention (including each of refrigerants 1 through 13), and a stabilizer composition consisting of farnesene, alkylated naphthalene 5 and BHT. The stabilizer as described in this paragraph is referred to herein as stabilizer 6.

The heat transfer composition may comprise a refrigerant of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising isobutylene and an alkylated naphthalene selected from alkylated naphthalene 1. The stabilizer as described in this paragraph is referred to herein as stabilizer 7.

The heat transfer composition can comprise a refrigerant of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising isobutylene, alkylated naphthalene 5, and BHT. The stabilizer as described in this paragraph is referred to herein as stabilizer 8.

The heat transfer composition can comprise a refrigerant of the present invention (including each of refrigerants 1 through 13), and a stabilizer composition consisting essentially of isobutylene, alkylated naphthalene 5, and BHT. The stabilizer as described in this paragraph is referred to herein as stabilizer 9.

The heat transfer composition can comprise a refrigerant of the present invention (including each of refrigerants 1 through 13), and a stabilizer composition consisting of isobutylene, alkylated naphthalene 5, and BHT. The stabilizer as described in this paragraph is referred to herein as stabilizer 10.

The heat transfer compositions of the present invention can comprise a refrigerant of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising alkylated naphthalene 4, wherein the alkylated naphthalene is present in an amount of from 0.0001 wt.% to about 5 wt.%, based on the weight of the heat transfer composition. The stabilizer within the specified amount in the heat transfer composition as described in this paragraph is referred to herein as stabilizer 11.

The heat transfer compositions of the present invention may preferably comprise a refrigerant of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising alkylated naphthalene 5, wherein the alkylated naphthalene is present in an amount of from 0.0001 wt.% to about 5 wt.%, based on the weight of the heat transfer composition. The stabilizing agent within the specified amount in the heat transfer composition as described in this paragraph is referred to herein as stabilizing agent 12.

The heat transfer compositions of the present invention may preferably comprise a refrigerant of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising BHT, wherein the BHT is present in an amount of from about 0.0001 wt.% to about 5 wt.% based on the weight of the heat transfer composition. The stabilizing agent within the specified amount in the heat transfer composition as described in this paragraph is referred to herein as stabilizing agent 13.

The heat transfer compositions of the present invention may preferably comprise a refrigerant of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising farnesene, alkylated naphthalene 4 and BHT, wherein farnesene is provided in an amount from about 0.0001% to about 5% by weight, alkylated naphthalene 4 is provided in an amount from about 0.0001% to about 10% by weight, and BHT is provided in an amount from about 0.0001% to about 5% by weight, wherein the percentages are based on the weight of the heat transfer composition. The stabilizer within the specified amount in the heat transfer composition as described in this paragraph is referred to herein as stabilizer 14.

The heat transfer compositions of the present invention can comprise a refrigerant of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising farnesene, alkylated naphthalene 4 and BHT, wherein farnesene is provided in an amount from 0.001 wt.% to about 2.5 wt.%, alkylated naphthalene 4 is provided in an amount from 0.001 wt.% to about 10 wt.%, and BHT is provided in an amount from 0.001 wt.% to about 2.5 wt.%, wherein the percentages are based on the weight of the heat transfer composition. The stabilizer within the specified amount in the heat transfer composition as described in this paragraph is referred to herein as stabilizer 15.

The heat transfer compositions of the present invention may more preferably comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising farnesene, alkylated naphthalene 4 and BHT, wherein farnesene is provided in an amount from 0.001 wt.% to about 2.5 wt.%, alkylated naphthalene 4 is provided in an amount from 1.5 wt.% to about 4.5 wt.%, and BHT is provided in an amount from 0.001 wt.% to about 2.5 wt.%, wherein the percentages are based on the weight of the heat transfer composition. The stabilizing agent within the specified amount in the heat transfer composition as described in this paragraph is referred to herein as stabilizing agent 16.

The heat transfer compositions of the present invention may more preferably comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13) and a stabilizer composition comprising farnesene, alkylated naphthalene 5 and BHT, wherein farnesene is provided in an amount from 0.001 wt.% to about 2.5 wt.%, alkylated naphthalene 5 is provided in an amount from 2.5 wt.% to 3.5 wt.%, and BHT is provided in an amount from 0.001 wt.% to about 2.5 wt.%, wherein the percentages are based on the weight of the heat transfer composition. The stabilizer within the specified amount in the heat transfer composition as described in this paragraph is referred to herein as stabilizer 17.

Heat transfer compositions comprising a refrigerant, a lubricant, and a stabilizer

The heat transfer composition of the present invention can comprise any refrigerant of the present invention (including each of refrigerants 1 through 13), as well as any lubricant of the present invention (including each of lubricants 1 through 3) and stabilizer of the present invention (including each of stabilizers 1 through 17).

The heat transfer composition of the present invention can comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), a POE lubricant, and stabilizer 1.

The heat transfer composition of the present invention may comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), lubricant 1, and stabilizer 1.

The heat transfer composition of the present invention may comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), lubricant 2, and stabilizer 1.

The heat transfer composition of the present invention can comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), a lubricant 3, and a stabilizer 1.

The heat transfer composition of the present invention can comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), a POE lubricant, and stabilizer 2.

The heat transfer composition of the present invention can comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), lubricant 1, and stabilizer 2.

The heat transfer composition of the present invention may comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), lubricant 2, and stabilizer 2.

The heat transfer composition of the present invention can comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), a lubricant 3, and a stabilizer 2.

The heat transfer composition of the present invention can comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), a POE lubricant, and stabilizer 3.

The heat transfer composition of the present invention can comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), lubricant 1, and stabilizer 3.

The heat transfer composition of the present invention can comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), lubricant 2, and stabilizer 3.

The heat transfer composition of the present invention may comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), a lubricant 3, and a stabilizer 3.

The heat transfer composition of the present invention can comprise any of the refrigerants of the present invention, including each of refrigerants 1 through 13, as well as lubricant 1 and stabilizer 14.

The heat transfer composition of the present invention may comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), lubricant 1, and stabilizer 14.

The heat transfer composition of the present invention may comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), lubricant 2, and stabilizer 14.

The heat transfer composition of the present invention may comprise any of the refrigerants of the present invention (including each of refrigerants 1 through 13), lubricant 3, and stabilizer 14.

The heat transfer composition of the present invention may comprise a refrigerant 1, a stabilizer 1, and a lubricant 1.

The heat transfer composition of the present invention may comprise a refrigerant 2, a stabilizer 1, and a lubricant 1.

The heat transfer composition of the present invention may comprise a refrigerant 3, a stabilizer 1, and a lubricant 1.

The heat transfer composition of the present invention may comprise a refrigerant 4, a stabilizer 1, and a lubricant 1.

The heat transfer composition of the present invention may comprise a refrigerant 5, a stabilizer 1, and a lubricant 1.

The heat transfer composition of the present invention may comprise a refrigerant 6, a stabilizer 1, and a lubricant 1.

The heat transfer composition of the present invention may comprise a refrigerant 7, a stabilizer 1, and a lubricant 1.

The heat transfer composition of the present invention may comprise a refrigerant 8, a stabilizer 1, and a lubricant 1.

The heat transfer composition of the present invention may comprise a refrigerant 9, a stabilizer 1, and a lubricant 1.

The heat transfer composition of the present invention may comprise a refrigerant 10, a stabilizer 1, and a lubricant 1.

The heat transfer composition of the present invention may comprise a refrigerant 11, a stabilizer 1, and a lubricant 1.

The heat transfer composition of the present invention may comprise a refrigerant 12, a stabilizer 1, and a lubricant 1.

The heat transfer composition of the present invention may comprise a refrigerant 13, a stabilizer 1, and a lubricant 1. The heat transfer composition of the present invention can comprise refrigerant 1, a POE lubricant, and a stabilizer selected from the group consisting of stabilizer 1, stabilizer 2, stabilizer 3, stabilizer 7, and stabilizer 14.

The heat transfer composition of the present invention may comprise a refrigerant 1, a lubricant 1, and a stabilizer selected from the group consisting of stabilizer 1, stabilizer 2, stabilizer 3, stabilizer 7, and stabilizer 14.

The heat transfer composition of the present invention may comprise a refrigerant 1, a lubricant 2, and a stabilizer selected from the group consisting of stabilizer 1, stabilizer 2, stabilizer 3, stabilizer 7, and stabilizer 14.

The heat transfer composition of the present invention may comprise refrigerant 4, a POE lubricant, and a stabilizer selected from the group consisting of stabilizer 1, stabilizer 2, stabilizer 3, stabilizer 7, and stabilizer 14.

The heat transfer composition of the present invention may comprise a refrigerant 4, a lubricant 1, and a stabilizer selected from the group consisting of stabilizer 1, stabilizer 2, stabilizer 3, stabilizer 7, and stabilizer 14.

The heat transfer composition of the present invention may comprise a refrigerant 4, a lubricant 2, and a stabilizer selected from the group consisting of stabilizer 1, stabilizer 2, stabilizer 3, stabilizer 7, and stabilizer 14.

The heat transfer composition of the present invention may comprise refrigerant 8, a POE lubricant, and a stabilizer selected from the group consisting of stabilizer 1, stabilizer 2, stabilizer 3, stabilizer 7, and stabilizer 14.

The heat transfer composition of the present invention may comprise a refrigerant 8, a lubricant 1, and a stabilizer selected from the group consisting of stabilizer 1, stabilizer 2, stabilizer 3, stabilizer 7, and stabilizer 14.

The heat transfer composition of the present invention may comprise a refrigerant 8, a lubricant 2, and a stabilizer selected from the group consisting of stabilizer 1, stabilizer 2, stabilizer 3, stabilizer 7, and stabilizer 14.

Those skilled in the art, having reference to the teachings contained herein, may also include other additives not mentioned herein without departing from the novel and essential characteristics of the present invention.

Combinations of surfactants and solubilizers may also be added to the compositions of the present invention to aid in oil solubility, as disclosed in U.S. Pat. No. 6,516,837, the disclosure of which is incorporated by reference in its entirety.

Method, use and system

Refrigerant and heat transfer compositions as disclosed herein are provided for use in heat transfer applications, including cryogenic refrigeration systems, including cryogenic commercial refrigeration systems (including cryogenic supermarket refrigeration systems) and cryogenic transport systems.

Refrigerant and heat transfer compositions as disclosed herein are provided for use in medium temperature refrigeration systems, including medium temperature commercial refrigeration systems (including medium temperature supermarket refrigeration systems and medium temperature transport systems).

The compositions of the present invention are useful in systems suitable for use with R-404 refrigerants, such as new heat transfer systems.

Any reference to the heat transfer compositions of the present invention refers to each and any of the heat transfer compositions as described herein. Thus, for the following discussion of the use or application of the compositions of the present invention, the heat transfer composition may comprise, consist essentially of, or consist of any of the refrigerants described herein in combination with the stabilizers and lubricants discussed herein, including: (i) each of the refrigerants 1 to 13; (ii) any combination of each of refrigerants 1 to 13 and each of stabilizers 1 to 19; (iii) any combination of each of refrigerants 1 through 13 and any lubricant (including POE lubricant and lubricants 1 through 2); and (iv) and any combination of each of refrigerants 1 through 13 and each of stabilizers 1 through 19 and any lubricant (including POE lubricant and lubricants 1 through 2).

For heat transfer systems of the present invention that include a compressor and a lubricant for the compressor in the system, the system may contain a load of refrigerant and lubricant such that the lubricant load in the system is from about 5 wt.% to 60 wt.%, or from about 10 wt.% to about 60 wt.%, or from about 20 wt.% to about 50 wt.%, or from about 20 wt.% to about 40 wt.%, or from about 20 wt.% to about 30 wt.%, or from about 30 wt.% to about 50 wt.%, or from about 30 wt.% to about 40 wt.%. As used herein, the term "lubricant loading" refers to the total weight of lubricant included in a system as a percentage of the total amount of lubricant and refrigerant included in the system. Such systems may also include a lubricant loading of about 5 wt.% to about 10 wt.%, or about 8 wt.% of the heat transfer composition.

The present invention provides a heat transfer system comprising a refrigerant of the present invention (including each of refrigerants 1 through 13), a lubricant of the present invention, and alkylated naphthalene present in an amount of from 0.1% to about 20%, or from about 5% to about 15%, or from about 8% to about 12%, wherein these amounts are weight percentages based on the amount of alkylated naphthalene plus lubricant in the system.

The present invention provides a heat transfer system comprising a refrigerant of the present invention (including each of refrigerants 1 through 13), lubricant 1, and alkylated naphthalene in an amount of 0.1% to about 20%, or about 5% to about 15%, or about 8% to about 12%, wherein these amounts are weight percentages based on the amount of alkylated naphthalene plus lubricant in the system.

The present invention provides a heat transfer system comprising a refrigerant of the present invention (including each of refrigerants 1 through 13), lubricant 2, and alkylated naphthalene in an amount of 0.1% to about 20%, or about 5% to about 15%, or about 8% to about 12%, wherein these amounts are weight percentages based on the amount of alkylated naphthalene plus lubricant in the system.

Exemplary Heat transfer systems

As described in detail below, the preferred system of the present invention comprises a compressor, a condenser, an expansion device, and an evaporator, all of which are connected in fluid communication using piping, valving, and a control system such that the refrigerant and the relevant components of the heat transfer composition can flow through the system in a known manner to complete the refrigeration cycle. An exemplary schematic of such a basic system is shown in fig. 1. Specifically, the system schematically illustrated in fig. 1 shows a compressor 10 providing compressed refrigerant vapor to a condenser 20. The compressed refrigerant vapor is condensed to produce liquid refrigerant, which is then directed to an expansion device 40 that produces refrigerant at a reduced temperature and pressure, which is then provided to an evaporator 50. In the evaporator 50, liquid refrigerant absorbs heat from the body or fluid being cooled, thereby producing refrigerant vapor, which is then provided to the suction line of the compressor.

The refrigeration system shown in fig. 2 is the same as that described above in connection with fig. 1, except that it includes a vapor injection system including a heat exchanger 30 and a bypass expansion valve 25. The bypass expansion device 25 diverts a portion of the refrigerant flow at the condenser outlet through the device to provide liquid refrigerant to the heat exchanger 30 at reduced pressure and thus to provide liquid refrigerant to the heat exchanger 30 at a lower temperature. The relatively cool liquid refrigerant then exchanges heat with the remaining relatively high temperature liquid from the condenser. This operation produces a subcooled liquid to the main expansion device 40 and evaporator 50 and returns a relatively cool refrigerant vapor to the compressor 10. In this manner, the injection of cooled refrigerant vapor to the suction side of the compressor serves to maintain the compressor discharge temperature within acceptable limits, which may be particularly advantageous in cryogenic systems utilizing high compression ratios.

The refrigeration system shown in fig. 3 is the same as that described above in connection with fig. 1, except that it includes a liquid injection system that includes a bypass valve 26. Bypass valve 26 diverts a portion of the liquid refrigerant exiting the condenser to the compressor, preferably to the liquid injection port of compressor 10. In this manner, liquid refrigerant is injected to the suction side of the compressor for maintaining the compressor discharge temperature within acceptable limits, which may be particularly advantageous in cryogenic systems utilizing high compression ratios.

The refrigeration system shown in fig. 4 is the same as that described above in connection with fig. 1, except that it includes a liquid-line/suction-line heat exchanger 35. Valve 25 diverts a portion of the refrigerant flow at the condenser outlet to a liquid-line/suction-line heat exchanger where heat is transferred from the liquid refrigerant to the refrigerant vapor exiting evaporator 50.

The refrigeration system shown in fig. 5 is the same as that described above in connection with fig. 1, except that it includes an oil separator 60 connected to the outlet of the compressor 10. As is known to those skilled in the art, a quantity of compressor lubricant will typically be carried into the compressor discharge refrigerant vapor, and an oil separator is included to provide a means of separating the lubricant liquid from the refrigerant vapor, and the resulting refrigerant vapor of reduced lubricant oil content travels to the condenser inlet, and the liquid lubricant is then returned to a lubricant reservoir for lubricating the compressor, such as a lubricant receiver. In preferred embodiments, the oil separator comprises a chelating material as described herein, preferably in the form of a filter or solid core.

Those skilled in the art will appreciate that the different device/configuration options shown in fig. 2-5, each separately, may be combined and used together, which is deemed advantageous for any particular application.

System with chelating material

The heat transfer system according to the present invention may comprise a compressor, an evaporator, a condenser and an expansion device (in communication with each other), a refrigerant of the present invention (including any of the refrigerants 1 to 13), a lubricant (including POE lubricant and lubricants 1 to 2), and a chelating material in the system, wherein the chelating material preferably comprises:

i. copper or copper alloy, or

Activated alumina, or

A zeolitic molecular sieve comprising copper, silver, lead, or combinations thereof, or

An anion exchange resin, or

A dehumidifying material, preferably a dehumidifying molecular sieve, or

A combination of two or more of the foregoing.

Preferred materials from each of the above categories (i) - (v) are described below.

a. Copper/copper alloy chelate material

The chelating material may be copper or a copper alloy, preferably copper. In addition to copper, the copper alloy may also contain one or more other metals, such as tin, aluminum, silicon, nickel, or combinations thereof. Alternatively or additionally, the copper alloy may comprise one or more non-metallic elements, such as carbon, nitrogen, silicon, oxygen, or combinations thereof.

It should be understood that the copper alloy may contain varying amounts of copper. For example, the copper alloy may comprise at least about 5 wt.%, at least about 15 wt.%, at least about 30 wt.%, at least about 50 wt.%, at least about 70 wt.%, or at least about 90 wt.% copper, based on the total weight of the copper alloy. It is also understood that the copper alloy may comprise from about 5 wt.% to about 95 wt.%, from about 10 wt.% to about 90 wt.%, from about 15 wt.% to about 85 wt.%, from about 20 wt.% to about 80 wt.%, from about 30 wt.% to about 70 wt.%, or from about 40 wt.% to about 60 wt.% copper, based on the total weight of the copper alloy.

Alternatively, copper may be used as the chelating material. Copper metal can contain impurity levels of other elements or compounds. For example, the copper metal can contain at least about 99 wt.%, more preferably at least about 99.5 wt.%, more preferably at least about 99.9 wt.% elemental copper.

The copper or copper alloy may be in any form that allows the refrigerant to contact the surface of the copper or copper alloy. Preferably, the form of the copper or copper alloy is selected to maximize the surface area of the copper or copper alloy (i.e., maximize the area in contact with the refrigerant).

For example, the metal may be in the form of a mesh, wire, sphere, cone, cylinder, or the like. The term "sphere" refers to a three-dimensional shape in which the difference between the maximum diameter and the minimum diameter is about 10% or less of the maximum diameter.

Copper or copper alloyMay have a height of at least about 10m²A/g of at least about 20m²A/g of at least about 30m²A/g of at least about 40m²/g or at least about 50m²BET surface area in g. BET surface area can be measured according to ASTM D6556-10.

When the chelating material comprises copper or a copper alloy, the BET surface area of the copper or copper alloy may be from about 0.01 to about 1.5m per kg of refrigerant²Preferably from about 0.02 to about 0.5m per kg refrigerant²。

For example, the copper or copper alloy may have about 0.08m per kg of refrigerant²Surface area of (a).

b. Zeolitic molecular sieve chelate materials

The chelating material may include a zeolitic molecular sieve. The zeolitic molecular sieve may comprise copper, silver, lead, or a combination thereof, preferably at least silver.

In preferred embodiments, the zeolitic molecular sieve contains the metal in an amount of from about 1 wt% to about 30 wt%, or preferably from about 5 wt% to about 20 wt%, based on the total weight of the zeolite and is preferably silver in certain embodiments.

The metal (i.e., copper, silver, and/or lead) may be present in a single oxidation state or in multiple oxidation states (e.g., the copper zeolite may comprise both cu (i) and cu (ii)).

The zeolite molecular sieve may comprise a metal other than silver, lead, and/or copper.

The zeolite may have a size in its largest dimension of aboutTo(angstrom) openings. For example, the zeolite may have a size in its largest dimension of about(angstrom) or smaller openings. Preferably, the zeolite has a size in its largest dimension of aboutTo about(angstrom) openings. Zeolites such as iosiv D7310-C have active sites which applicants have found to be effective in removing certain decomposition products according to the present invention.

When the chelating material comprises a zeolitic molecular sieve comprising copper, silver, lead, or a combination thereof, the molecular sieve (e.g., zeolite) may be present in an amount of about 1 wt.% to about 30 wt.%, such as about 2 wt.% to about 25 wt.%, relative to the total amount of molecular sieve (e.g., zeolite), refrigerant, and lubricant (if present) in the heat transfer system.

In preferred embodiments, the chelating material comprises a zeolite molecular sieve comprising silver, and in such embodiments, the molecular sieve may be present in an amount of at least 5% parts by weight (pbw) per 100 pbw of lubricant (pphl), based on the total amount of molecular sieve (e.g., zeolite) and lubricant in the heat transfer system being treated, preferably from about 5pbw to about 30pbw, or from about 5pbw to about 20 pbw. It has been found that preferred embodiments as described in this paragraph have excellent ability to remove fluoride from heat transfer compositions as described herein. Further, in such preferred embodiments as described in this paragraph, the amount of silver present in the molecular sieve is from about 1 wt% to about 30 wt%, or preferably from about 5 wt% to about 20 wt%, based on the total weight of the zeolite.

In preferred embodiments, the chelating material comprises a zeolite molecular sieve comprising silver, and in such embodiments, the molecular sieve (e.g., zeolite) may be present in an amount of at least about 10pphl, preferably from about 10pphl to about 30pphl, or from about 10pphl to about 20pphl by weight relative to the total amount of molecular sieve (e.g., zeolite) and lubricant in the heat transfer system being treated. It has been found that preferred embodiments as described in this paragraph have excellent ability to remove iodide from heat transfer compositions as described herein. Further, in such preferred embodiments as described in this paragraph, the amount of silver present in the molecular sieve is from about 1 wt% to about 30 wt%, or preferably from about 5 wt% to about 20 wt%, based on the total weight of the zeolite.

In preferred embodiments, the chelating material comprises a zeolite molecular sieve comprising silver, and in such embodiments, the molecular sieve may be present in an amount of at least pphl, preferably from about 15pphl to about 30pphl, or from about 15pphl to about 20pphl by weight relative to the total amount of molecular sieve and lubricant in the heat transfer system being treated. It has been found that preferred embodiments as described in this paragraph have superior ability to reduce TAN levels in heat transfer compositions as described herein. Further, in such preferred embodiments as described in this paragraph, the amount of silver present in the molecular sieve is from about 1 wt% to about 30 wt%, or preferably from about 5 wt% to about 20 wt%, based on the total weight of the zeolite.

Preferably, the zeolitic molecular sieve is present in an amount of at least about 15pphl or at least about 18pphl relative to the total amount of molecular sieve and lubricant in the system. Thus, the molecular sieve may be present in an amount of about 15pphl to about 30pphl, or about 18pphl to about 25pphl, relative to the total amount of molecular sieve and lubricant present in the system.

It should be understood that the zeolite may be present in an amount of about 5pphl or about 21pphl relative to the total amount of molecular sieve and lubricant in the system.

The amount of zeolitic molecular sieve referred to herein refers to the dry weight of the molecular sieve. As used herein, the term "dry weight" of a chelating material means that the material has 50ppm or less of moisture.

c. Anion exchange resin

The chelating material may comprise an anion exchange resin.

Preferably, the anion exchange resin is a strongly basic anion exchange resin. The strongly basic anion exchange resin may be type 1 resin or type 2 resin. Preferably, the anion exchange resin is a type 1 strongly basic anion exchange resin.

Anion exchange resins typically comprise a positively charged matrix and exchangeable anions. The exchangeable anion may be a chloride anion (Cl)^-) And/or hydroxide anion (OH)^-)。

The anion exchange resin may be provided in any form. For example, the anion exchange resin can be provided as beads. When dried, the beads may be from about 0.3mm to about 1.2mm in size in their largest dimension.

When the chelating material comprises an anion exchange resin, the anion exchange resin may be present in an amount of from about 1pphl to about 60pphl, or from about 5pphl to about 60pphl, or from about 20pphl to about 50pphl, or from about 20pphl to about 30pphl, or from about 1pphl to about 25pphl, such as from about 2pphl to about 20pphl, based on the total amount of anion exchange resin and lubricant in the system.

Preferably, the anion exchange resin is present in an amount of at least about 10pphl, or at least about 15pphl relative to the total amount of anion exchange resin and lubricant in the system. Thus, the anion exchange resin may be present in an amount of about 10pphl to about 25pphl, or about 15pphl to about 20pphl, relative to the total amount of anion exchange resin and lubricant in the system.

It should be understood that the anion exchange resin may be present in an amount of about 4pphl or about 16pphl based on the total amount of anion exchange resin and lubricant present in the system.

Applicants have discovered the unexpectedly advantageous ability of commercial grade weakly basic anion exchange adsorbent resins, particularly including materials sold under the trade name Amberlyst a21 (free base), to act as chelating materials. As used herein, the term weakly basic anionic resin refers to a resin in free base form that is preferably functionalized with a tertiary amine (uncharged). Tertiary amines contain a free lone pair of electrons on the nitrogen, which results in their ready protonation in the presence of an acid. In a preferred embodiment, the ion exchange resins used according to the present invention are protonated by the acid and then attract and bind the anionic counter ion to completely remove the acid without returning any additional material to solution.

Amberlyst a21 is the preferred material because it has been found by the applicant to be advantageous in that it provides a macroporous structure such that it is physically very stable and resistant to rupture, and it has been found by the applicant to be able to withstand the higher flow rates of a refrigeration system over a relatively long period of time, including preferably over the life of the system.

The amount of anion exchange resin described herein refers to the dry weight of the anion exchange resin. As used herein, the term "dry weight" of a chelating material means that the material has 50ppm or less of moisture.

As used herein, pphl of a particular chelating material means parts per hundred parts of the particular chelating material by weight based on the total weight of the particular chelating material and lubricant in the system.

d. Dehumidifying material

The preferred chelating material is a desiccant material. In a preferred embodiment, the desiccant material comprises, consists essentially of, or consists of a desiccant molecular sieve. Preferred dehumidification molecular sieves include those commonly referred to as sodium aluminosilicate molecular sieves, and such materials are preferably crystalline metal aluminosilicates having a three-dimensional interconnected network of silica and alumina tetrahedra. Applicants have found that such materials are effective for dehumidification in the system of the present invention and are most preferably classified as 3A, 4A, 5A and 13X types according to pore size.

The amount of the dehumidifying material, particularly the dehumidifying molecular sieve and even more preferably the sodium aluminosilicate molecular sieve, is preferably from about 15pphl to about 60pphl by weight, and even more preferably from about 30pphl to 45pphl by weight.

e. Activated alumina

Examples of activated aluminas that applicants have found effective in accordance with the present invention and are commercially available include those sodium activated aluminas sold under the tradename F200 by BASF and under the tradename CLR-204 by Honeywell/UOP. Applicants have found that activated alumina in general, and sodium activated alumina in particular, as described above, is particularly effective for sequestering the types of acidic contaminants generated in connection with the refrigerant compositions and heat transfer methods and systems of the present invention.

When the chelating material comprises activated alumina, the activated alumina may be present in an amount of about 1pphl to about 60pphl, or about 5pphl to about 60pphl by weight.

f. Combination of chelating materials

When a combination of chelating materials is present, the materials may be provided in any ratio relative to each other.

For example, when the chelating material comprises an anion exchange resin and a molecular sieve (e.g., a zeolite), the weight ratio of anion exchange resin to molecular sieve (e.g., a zeolite), when dry, is preferably in the range of about 10:90 to about 90:10, about 20:80 to about 80:20, about 25:75 to about 75:25, about 30:70 to about 70:30, or about 60:40 to about 40: 60. Exemplary weight ratios of anion exchange resin to metal zeolite include about 25:75, about 50:50, and about 75: 25.

For convenience purposes, the heat transfer system comprises at least one of chelating materials (i) - (v), referred to herein for convenience as chelating material 1.

For convenience, the heat transfer system comprises chelating materials from at least two of classes (i) - (v), such materials being referred to herein as chelating materials 2 for convenience.

For convenience purposes, the heat transfer system comprises chelating materials from at least two of classes (ii) - (v), such materials being referred to herein for convenience as chelating materials 3.

For convenience, the heat transfer system comprises a chelating material from at least three of classes (ii) - (v), such material being referred to herein for convenience as chelating material 4.

For convenience, when the heat transfer system comprises a chelating material from each of classes (ii) - (v), such material is referred to herein as chelating material 5 for convenience.

For convenience, when the heat transfer system includes a chelating material comprising a material from each of classes (ii) - (v) and wherein the material from class (iii) comprises silver, such material is referred to herein as chelating material 6 for convenience.

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant of the present invention (including each of refrigerants 1 through 13), a lubricant, and a chelating material 1.

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant of the present invention (including each of refrigerants 1 through 13), a lubricant, and a chelating material 2.

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant of the present invention (including each of refrigerants 1 through 13), a lubricant, and a chelating material 3.

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant of the present invention (including each of refrigerants 1 through 13), a lubricant, and a chelating material 4.

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant of the present invention (including each of refrigerants 1 through 13), a lubricant, and a chelating material 5.

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant of the present invention (including each of refrigerants 1 through 13), a lubricant, and a chelating material 6.

The heat transfer system according to the present invention may comprise a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of refrigerants 1-13), a lubricant (comprising each of POE lubricant, lubricant 1, and lubricant 2), a chelating material (comprising each of chelating materials 1-6), and a stabilizer (comprising each of stabilizers 1-13).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 1, a POE lubricant, a stabilizer 1, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 1, a lubricant 1, a stabilizer 1, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 1, a lubricant 2, a stabilizer 1, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 4, a POE lubricant, a stabilizer 1, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 4, a lubricant 1, a stabilizer 1, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 4, a lubricant 2, a stabilizer 1, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 8, a POE lubricant, a stabilizer 1, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 8, a lubricant 1, a stabilizer 1, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 8, a lubricant 2, a stabilizer 1, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 1, a POE lubricant, a stabilizer 3, and a chelating material (including each of chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 1, a lubricant 1, a stabilizer 3, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 1, a lubricant 2, a stabilizer 3, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 4, a POE lubricant, a stabilizer 3, and a chelating material (including each of chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 4, a lubricant 1, a stabilizer 3, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 4, a lubricant 2, a stabilizer 3, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 8, a POE lubricant, a stabilizer 3, and a chelating material (including each of chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 8, a lubricant 1, a stabilizer 3, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system according to the present invention may include a compressor, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant 8, a lubricant 2, a stabilizer 3, and a chelating material (including each of the chelating materials 1 to 6).

The heat transfer system of the present invention comprises a system comprising an oil separator downstream of the compressor, and such a system preferably comprises one or more chelating materials of the present invention (including each of chelating materials 1 through 6), wherein the chelating materials are located inside the oil separator, or in some cases outside but downstream of the oil separator, such that the liquid lubricant is in contact with the one or more chelating materials.

The present invention also includes one or more chelating materials, including chelating materials 1 through 6, located in the refrigerant liquid exiting the condenser.

The invention also includes a method of transferring heat of the type comprising evaporating a refrigerant liquid to produce a refrigerant vapor, compressing at least a portion of the refrigerant vapor in a compressor and condensing the refrigerant vapor, the method comprising:

(a) providing a refrigerant according to the present invention, including each of the refrigerants 1 to 13;

(b) optionally but preferably providing a lubricant to the compressor; and

(c) exposing at least a portion of the refrigerant and/or at least a portion of the lubricant to a chelating material 1.

The invention also includes a method of transferring heat of the type comprising evaporating a refrigerant liquid to produce a refrigerant vapor, compressing at least a portion of the refrigerant vapor in a compressor and condensing the refrigerant vapor, the method comprising:

(a) providing a refrigerant according to the present invention, including each of the refrigerants 1 to 13;

(b) optionally but preferably providing a lubricant to the compressor; and

(c) at least a portion of the refrigerant and/or at least a portion of the lubricant is exposed to a chelating material 3.

The invention also includes a method of transferring heat of the type comprising evaporating a refrigerant liquid to produce a refrigerant vapor, compressing at least a portion of the refrigerant vapor in a compressor and condensing the refrigerant vapor, the method comprising:

(a) providing a refrigerant according to the present invention, including each of the refrigerants 1 to 13;

(b) optionally but preferably providing a lubricant to the compressor; and

(c) at least a portion of the refrigerant and/or at least a portion of the lubricant is exposed to a chelating material 5.

The present invention also includes a method of heat transfer according to any of the preceding four paragraphs, wherein the exposure temperature is preferably above about 10 ℃.

In other aspects of the invention, at least two materials are included together in the filter element. The term "filter element" as used herein refers to any device, system, article, or container in which each chelating material is located in close physical proximity and preferably at substantially the same location within the system.

In other aspects of the invention, the chelating material 2 is used in the heat transfer system of the invention, and the heat transfer method of the invention is configured such that each of the at least two materials are included together in a solid core. The term "solid core" as used herein refers to a relatively porous solid comprising and/or having embedded therein two or more chelating materials such that fluids passing through the any solid core are accessible to such materials. In a preferred embodiment, the one or more chelating materials are substantially uniformly distributed throughout the solid core.

In a preferred embodiment, the solid core of the present invention is comprised in or comprises a filter element.

In a preferred embodiment, the chelating material 2 is configured such that each of the at least two materials is included in the solid core.

In a preferred embodiment, the chelating material 3 is configured such that each of the at least two materials is included together in the filter element.

In a preferred embodiment, the chelating material 3 is configured such that all materials are included in the solid core.

In a preferred embodiment, the chelating material 5 is configured such that each of the at least two materials are included together in the filter element.

In a preferred embodiment, the chelating material 5 is configured such that all materials are included in the solid core.

In a preferred embodiment, the chelating material 6 is configured such that each of the at least two materials are included together in the filter element.

In a preferred embodiment, the chelating material 6 is configured such that all materials are included in the solid core.

With respect to the chelating material, the system of the present invention preferably comprises a chelating material (including each of chelating materials 1 to 6) in contact with at least a portion of a refrigerant (including each of refrigerants 1 to 13) according to the present invention, and/or with at least a portion of a lubricant (including each of POE lubricants and lubricants 1 to 2), wherein the temperature of the chelating material and/or the temperature of the refrigerant and/or the temperature of the lubricant at the time of said contact is preferably a temperature of at least about 10 ℃. Any and all refrigerants and any and all chelating materials as described herein may be used in the system of the present invention.

As used herein, the term "in contact with at least a portion" is intended in its broadest sense to include the contact of each of the described chelating materials, and any combination of chelating materials as described herein, with the same or separate portions of refrigerant and/or lubricant in a system, and is intended to include, but not necessarily limited to, embodiments in which each type or particular chelating material is: (i) physically located with each other type or specific material (if present); (ii) (ii) a location that is physically separate from each other type or specific material (if present), and (iii) a combination in which two or more materials are physically together and at least one chelating material is physically separate from at least one other chelating material.

Cryogenic system

The heat transfer system according to the present invention comprises a cryogenic heat transfer system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of refrigerants 1-13), and a lubricant (comprising POE lubricant and each of lubricants 1-2).

The heat transfer system according to the present invention comprises a cryogenic heat transfer system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of refrigerants 1-13), a lubricant (comprising POE lubricant and each of lubricants 1-2), and a chelating material (comprising each of chelating materials 1-6).

The heat transfer system according to the present invention comprises a cryogenic heat transfer system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of refrigerants 1-13), a lubricant (comprising POE lubricant and each of lubricants 1-2), and a stabilizer (comprising each of stabilizers 1-17).

The heat transfer system according to the present invention comprises a cryogenic heat transfer system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a cryogenic heat transfer system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant 1, a POE lubricant, and a stabilizer (including each of stabilizers 1 to 17).

The heat transfer system according to the present invention comprises a cryogenic heat transfer system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant 1, a POE lubricant, a stabilizer 1, and a chelating material selected from the group consisting of chelating materials 1 to 6.

The heat transfer system according to the invention comprises a cryogenic transport refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 1, a POE lubricant and a stabilizer 1.

The heat transfer system according to the present invention comprises a cryogenic transport refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-35 ℃ to about-25 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant, and a stabilizer 1.

The heat transfer system according to the present invention comprises a cryogenic transport refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to about-25 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant, a stabilizer 1, and a chelating material selected from the group consisting of chelating materials 1 to 6.

The heat transfer system according to the invention comprises a cryocooler system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 1, a POE lubricant and a stabiliser 1.

The heat transfer system according to the present invention comprises a cryocooler system comprising a compressor, an evaporator having an evaporator operating temperature of about-25 ℃ to about-12 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant, and a stabilizer 1.

The heat transfer system according to the present invention comprises a cryocooler system comprising a compressor, an evaporator having an evaporator operating temperature of about-25 ℃ to about-12 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant and stabilizer 1, and a chelating material selected from the group consisting of chelating materials 1 to 6.

The heat transfer system according to the invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 1, a POE lubricant and a stabiliser 1.

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to about-12 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant and a stabilizer 1.

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to about-12 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant, a stabilizer 1 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to about-25 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant and a stabilizer 1.

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to about-25 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant, a stabilizer 1 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a cryogenic transport refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant 4, a POE lubricant, a stabilizer 1, and a chelating material selected from the group consisting of chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a cryogenic transport refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to about-25 ℃, a condenser and an expansion device (in fluid communication with each other), a refrigerant 4, a POE lubricant, and a stabilizer (including each of stabilizers 1-17).

The heat transfer system according to the invention comprises a cryocooler system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 4, a POE lubricant and a stabiliser 1.

The heat transfer system according to the present invention comprises a cryocooler system comprising a compressor, an evaporator having an evaporator operating temperature of about-25 ℃ to-12 ℃, a condenser and expansion device, a refrigerant 4, a POE lubricant, and a stabilizer 1.

The heat transfer system according to the present invention comprises a cryocooler system comprising a compressor, an evaporator having an evaporator operating temperature of about-25 ℃ to-12 ℃, a condenser and expansion device, a refrigerant 4, a POE lubricant and stabilizer 1, and a chelating material selected from the group consisting of chelating materials 1 to 6.

The heat transfer system according to the invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 4, a POE lubricant and a stabiliser 1.

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to-12 ℃, a condenser and expansion device, a refrigerant 4, a POE lubricant and a stabilizer 1.

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to-12 ℃, a condenser and an expansion device, a refrigerant 4, a POE lubricant, a stabilizer 1 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to about-25 ℃, a condenser and an expansion device, a refrigerant 4, a POE lubricant and a stabilizer 1.

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to about-25 ℃, a condenser and an expansion device, a refrigerant 4, a POE lubricant, a stabilizer 11 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a cryogenic transport refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to about-25 ℃, a condenser and an expansion device (in fluid communication with each other), a refrigerant 8, a POE lubricant, and a stabilizer (including each of stabilizers 1-17).

The heat transfer system according to the invention comprises a cryocooler system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 8, a POE lubricant and a stabiliser 1.

The heat transfer system according to the present invention comprises a cryocooler system comprising a compressor, an evaporator having an evaporator operating temperature of about-25 ℃ to about-12 ℃, a condenser and an expansion device, a refrigerant 8, a POE lubricant, and a stabilizer 1.

The heat transfer system according to the present invention comprises a cryocooler system comprising a compressor, an evaporator having an evaporator operating temperature of about-25 ℃ to about-12 ℃, a condenser and expansion device, a refrigerant 8, a POE lubricant and stabilizer 1, and a chelating material selected from the group consisting of chelating materials 1 to 6.

The heat transfer system according to the invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 8, a POE lubricant and a stabiliser 1.

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to-12 ℃, a condenser and expansion device, a refrigerant 8, a POE lubricant and a stabiliser 1.

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to-12 ℃, a condenser and an expansion device, a refrigerant 8, a POE lubricant, a stabilizer 1 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to about-25 ℃, a condenser and an expansion device, a refrigerant 8, a POE lubricant and a stabilizer 1.

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to about-25 ℃, a condenser and an expansion device, a refrigerant 8, a POE lubricant, a stabilizer 11 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a cryogenic heat transfer system comprising a compressor, a vapor ejector, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of lubricants 1 to 2), and a stabilizer (comprising each of stabilizers 1 to 17) and a chelating material (comprising each of chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a cryogenic heat transfer system comprising a compressor, a liquid ejector, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a cryogenic transport refrigeration system comprising a compressor, a vapor ejector, a liquid ejector, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of refrigerants 1 through 13), a lubricant (comprising POE lubricant and each of lubricants 1 through 2), and a stabilizer (comprising each of stabilizers 1 through 17) and a chelating material (comprising each of chelating materials 1 through 6).

The heat transfer system according to the present invention comprises a cryogenic transport refrigeration system comprising a compressor, a liquid ejector, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a cryogenic transport refrigeration system comprising a compressor, a vapor ejector, a liquid ejector, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of refrigerants 1 through 13), a lubricant (comprising POE lubricant and each of lubricants 1 through 2), and a stabilizer (comprising each of stabilizers 1 through 17) and a chelating material (comprising each of chelating materials 1 through 6).

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, a vapor ejector, a liquid ejector, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of lubricants 1 to 2), and a stabilizer (comprising each of stabilizers 1 to 17) and a chelating material (comprising each of chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, a liquid ejector, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a cryogenic supermarket refrigeration system comprising a compressor, a vapor ejector, a liquid ejector, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of lubricants 1 to 2), and a stabilizer (comprising each of stabilizers 1 to 17) and a chelating material (comprising each of chelating materials 1 to 6).

Medium temperature system

The heat transfer system according to the present invention comprises a medium temperature heat transfer system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of refrigerants 1-13) and a lubricant (comprising POE lubricant and each of lubricants 1-2).

The heat transfer system according to the present invention comprises a medium temperature heat transfer system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of lubricants 1 to 2), and a chelating material (comprising each of chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a medium temperature heat transfer system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of lubricants 1 to 2), and a stabilizer (comprising each of stabilizers 1 to 17).

The heat transfer system according to the present invention comprises a medium temperature heat transfer system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a medium temperature heat transfer system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant 1, a POE lubricant, and a stabilizer (including each of stabilizers 1 to 17).

The heat transfer system according to the present invention comprises a medium temperature heat transfer system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant 1, a POE lubricant, a stabilizer 1, and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the invention comprises a medium temperature transport refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 1, a POE lubricant and a stabilizer 1.

The heat transfer system according to the present invention comprises a medium temperature transport refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant, and a stabilizer 1.

The heat transfer system according to the present invention comprises a medium temperature transport refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about-0 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant, a stabilizer 1, and a chelating material selected from the group consisting of chelating materials 1 to 6.

The heat transfer system according to the invention comprises a moderate temperature cooler system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 1, a POE lubricant and a stabilizer 1.

The heat transfer system according to the invention comprises a moderate temperature cooler system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant and a stabilizer 1.

The heat transfer system according to the invention comprises a moderate temperature cooler system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant and stabilizer 1 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the invention comprises a medium-temperature supermarket refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 1, a POE lubricant and a stabiliser 1.

The heat transfer system according to the invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and expansion device, a refrigerant 1, a POE lubricant and a stabiliser 1.

The heat transfer system according to the present invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant, a stabilizer 1 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-10 ℃ to about-6.7 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant and a stabiliser 1.

The heat transfer system according to the present invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-10 ℃ to about-6.7 ℃, a condenser and an expansion device, a refrigerant 1, a POE lubricant, a stabilizer 1 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the invention comprises a medium temperature transport refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant 4, a POE lubricant, a stabilizer 1.

The heat transfer system according to the present invention comprises a medium temperature transport refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant 4, a POE lubricant, a stabilizer 1, and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a medium temperature transport refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device (in fluid communication with each other), a refrigerant 4, a POE lubricant, and a stabilizer (including each of stabilizers 1 to 17).

The heat transfer system according to the invention comprises a moderate temperature cooler system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device, a refrigerant 4, a POE lubricant and a stabilizer 1.

The heat transfer system according to the invention comprises a moderate temperature cooler system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 4, a POE lubricant and a stabilizer 1.

The heat transfer system according to the invention comprises a moderate temperature cooler system comprising a compressor, an evaporator having an evaporator operating temperature of-10 ℃ to about-6.7 ℃, a condenser and an expansion device, a refrigerant 4, a POE lubricant and a stabilizer 1.

The heat transfer system according to the invention comprises a moderate temperature cooler system comprising a compressor, an evaporator having an evaporator operating temperature of-10 ℃ to about-6.7 ℃, a condenser and an expansion device, a refrigerant 4, a POE lubricant and stabilizer 1 and a chelating material selected from the group consisting of chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a moderate temperature cooler system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device (in fluid communication with each other), a refrigerant 4, a POE lubricant, and a stabilizer (including each of stabilizers 1 to 17).

The heat transfer system according to the invention comprises a medium-temperature supermarket refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 4, a POE lubricant and a stabiliser 1.

The heat transfer system according to the invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-35 ℃ to about-12 ℃, a condenser and expansion device, a refrigerant 4, a POE lubricant and a stabiliser 1.

The heat transfer system according to the invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of about-35 ℃ to-12 ℃, a condenser and an expansion device, a refrigerant 4, a POE lubricant, a stabilizer 1 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device (in fluid communication with each other), a refrigerant 4, a POE lubricant, and a stabilizer (including each of stabilizers 1 to 17).

The heat transfer system according to the invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-10 ℃ to about-6.7 ℃, a condenser and an expansion device, a refrigerant 4, a POE lubricant and a stabiliser 1.

The heat transfer system according to the invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-10 ℃ to about-6.7 ℃, a condenser and an expansion device, a refrigerant 4, a POE lubricant, a stabilizer 1 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the invention comprises a medium temperature transport refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant 8, a POE lubricant, a stabilizer 1.

The heat transfer system according to the present invention comprises a medium temperature transport refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant 8, a POE lubricant, a stabilizer 1, and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a medium temperature transport refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device (in fluid communication with each other), a refrigerant 8, a POE lubricant, and a stabilizer (including each of stabilizers 1 to 17).

The heat transfer system according to the invention comprises a moderate temperature cooler system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 8, a POE lubricant and a stabilizer 1.

The heat transfer system according to the invention comprises a moderate temperature cooler system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device, a refrigerant 8, a POE lubricant and a stabilizer 1.

The heat transfer system according to the invention comprises a moderate temperature cooler system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device, a refrigerant 8, a POE lubricant, a stabilizer 1 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the invention comprises a moderate temperature cooler system comprising a compressor, an evaporator having an evaporator operating temperature of-10 ℃ to about-6.7 ℃, a condenser and an expansion device, a refrigerant 8, a POE lubricant and stabilizer 1 and a chelating material selected from the group consisting of chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a moderate temperature cooler system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device (in fluid communication with each other), a refrigerant 8, a POE lubricant, and a stabilizer (including each of stabilizers 1 to 17).

The heat transfer system according to the invention comprises a medium-temperature supermarket refrigeration system comprising a compressor, an evaporator, a condenser and an expansion device, a refrigerant 8, a POE lubricant and a stabiliser 1.

The heat transfer system according to the invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and expansion device, a refrigerant 8, a POE lubricant and a stabiliser 1.

The heat transfer system according to the present invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about-0 ℃, a condenser and an expansion device, a refrigerant 8, a POE lubricant, a stabilizer 1 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-12 ℃ to about 0 ℃, a condenser and an expansion device (in fluid communication with each other), a refrigerant 8, a POE lubricant, and a stabilizer (including each of stabilizers 1 to 17).

The heat transfer system according to the invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-10 ℃ to about-6.7 ℃, a condenser and an expansion device, a refrigerant 8, a POE lubricant and a stabiliser 1.

The heat transfer system according to the invention comprises a medium temperature supermarket refrigeration system comprising a compressor, an evaporator having an evaporator operating temperature of-10 ℃ to about-6.7 ℃, a condenser and an expansion device, a refrigerant 4, a POE lubricant, a stabilizer 1 and a chelating material selected from chelating materials 1 to 6.

The heat transfer system according to the present invention comprises a medium temperature heat transfer system comprising a compressor, a vapor ejector, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a medium temperature heat transfer system comprising a compressor, a liquid ejector, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a medium temperature transport refrigeration system comprising a compressor, a vapor ejector, a liquid ejector, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a medium temperature transport refrigeration system comprising a compressor, a liquid ejector, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a medium temperature transport refrigeration system comprising a compressor, a vapor ejector, a liquid ejector, an evaporator, a condenser, and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a medium temperature supermarket refrigeration system comprising a compressor, a vapor ejector, a liquid ejector, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a medium temperature supermarket refrigeration system comprising a compressor, a liquid ejector, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

The heat transfer system according to the present invention comprises a medium temperature supermarket refrigeration system comprising a compressor, a vapor ejector, a liquid ejector, an evaporator, a condenser and an expansion device (in fluid communication with each other), a refrigerant of the present invention (comprising each of the refrigerants 1 to 13), a lubricant (comprising POE lubricant and each of the lubricants 1 to 2), and a stabilizer (comprising each of the stabilizers 1 to 17) and a chelating material (comprising each of the chelating materials 1 to 6).

Low temperature process

The invention also includes a cryogenic refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including any refrigerant selected from each of refrigerants 1-13) at a temperature of about-40 ℃ to about-12 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

and

(c) condensing the refrigerant from the compressor at a temperature of about 20 ℃ to about 60 ℃ to produce a refrigerant vapor.

The invention also includes a cryogenic refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including any refrigerant selected from each of refrigerants 1-13) at a temperature of about-40 ℃ to about-12 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

and

(c) condensing the refrigerant from the compressor at a temperature of about 25 ℃ to about 45 ℃ to produce a refrigerant vapor.

The invention also includes a cryogenic refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including each of refrigerants 1-13) at a temperature in the range of about-35 ℃ to about-25 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

and

(c) condensing the refrigerant from the compressor at a temperature of about 25 ℃ to about 45 ℃ to produce a refrigerant vapor.

The invention also includes a cryogenic refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including each of refrigerants 1-13) at a temperature in the range of about-25 ℃ to about-12 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

and

(c) condensing the refrigerant from the compressor at a temperature of about 25 ℃ to about 45 ℃ to produce a refrigerant liquid.

The invention also includes a cryogenic refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including each of refrigerants 1-13) at a temperature in the range of about-25 ℃ to about-12 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

and

(c) condensing the refrigerant from the compressor at a temperature in a range of about 20 ℃ to about 60 ℃ to produce a refrigerant liquid.

The invention also includes a cryogenic refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including any refrigerant selected from each of refrigerants 1-13) at a temperature of about-40 ℃ to about-12 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor in a POE lubricant lubricated compressor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

(c) condensing refrigerant from the compressor at a temperature of about 20 ℃ to about 60 ℃ to produce a refrigerant vapor; and

(d) exposing at least a portion of the refrigerant and/or at least a portion of the lubricant to a chelating material of the present invention, including any of chelating materials 1 to 6.

The invention also includes a cryogenic refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including any refrigerant selected from each of refrigerants 1-13) at a temperature of about-40 ℃ to-12 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor in a POE lubricant lubricated compressor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

(c) condensing refrigerant from the compressor at a temperature of about 25 ℃ to about 45 ℃ to produce a refrigerant vapor; and

(d) exposing at least a portion of the refrigerant and/or at least a portion of the lubricant to a chelating material of the present invention, including any of chelating materials 1 to 6.

The invention also includes a cryogenic refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including each of refrigerants 1-13) at a temperature in the range of about-35 ℃ to about-25 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor to produce a refrigerant having a discharge temperature of less than about 135 ℃ in a POE lubricant lubricated compressor;

(c) condensing refrigerant from the compressor at a temperature of about 25 ℃ to about 45 ℃ to produce a refrigerant vapor; and

(d) exposing at least a portion of the refrigerant and/or at least a portion of the lubricant to a chelating material of the present invention, including any of chelating materials 1 to 6.

The invention also includes a cryogenic refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including each of refrigerants 1-13) at a temperature in the range of about-25 ℃ to-12 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor in a POE lubricant lubricated compressor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

(c) condensing refrigerant from the compressor at a temperature of about 25 ℃ to about 45 ℃ to produce a refrigerant liquid; and

(d) exposing at least a portion of the refrigerant and/or at least a portion of the lubricant to a chelating material of the present invention, including any of chelating materials 1 to 6.

The invention also includes a cryogenic refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including each of refrigerants 1-13) at a temperature in the range of about-25 ℃ to-12 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor in a POE lubricant lubricated compressor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

(c) condensing refrigerant from the compressor at a temperature in a range of about 20 ℃ to about 60 ℃ to produce a refrigerant liquid; and

(d) exposing at least a portion of the refrigerant and/or at least a portion of the lubricant to a chelating material of the present invention, including any of chelating materials 1 to 6.

The present invention provides cryogenic refrigeration processes, including each cryogenic process as described in this paragraph, wherein the refrigerant vapor has a superheat degree at the evaporator exit of from about 0 ℃ to about 10 ℃, and a superheat degree in the suction line of from about 15 ℃ to about 50 ℃.

Intermediate temperature process

The invention also includes a medium temperature refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including any refrigerant selected from each of refrigerants 1-13) at a temperature of-12 ℃ to about 0 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

and

(c) condensing the refrigerant from the compressor at a temperature of about 20 ℃ to about 60 ℃ to produce a refrigerant vapor.

The invention also includes a medium temperature refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including any refrigerant selected from each of refrigerants 1-13) at a temperature of about-10 ℃ to about-6.7 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

and

(c) condensing the refrigerant from the compressor at a temperature of about 25 ℃ to about 45 ℃ to produce a refrigerant vapor.

The invention also includes a medium temperature refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including each of refrigerants 1-13) at a temperature in the range of about-12 ℃ to about 0 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

and

(c) condensing the refrigerant from the compressor at a temperature of about 25 ℃ to about 45 ℃ to produce a refrigerant vapor.

The invention also includes a medium temperature refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including any refrigerant selected from each of refrigerants 1-13) at a temperature of about-12 ℃ to about 0 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor in a POE lubricant lubricated compressor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

(c) condensing refrigerant from the compressor at a temperature of about 20 ℃ to about 60 ℃ to produce a refrigerant vapor; and

(d) exposing at least a portion of the refrigerant and/or at least a portion of the lubricant to a chelating material of the present invention, including any of chelating materials 1 to 6.

The invention also includes a medium temperature refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including any refrigerant selected from each of refrigerants 1-13) at a temperature of about-12 ℃ to about 0 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor in a POE lubricant lubricated compressor to produce a refrigerant having a discharge temperature of less than about 135 ℃;

(c) condensing refrigerant from the compressor at a temperature of about 25 ℃ to about 45 ℃ to produce a refrigerant vapor; and

(d) exposing at least a portion of the refrigerant and/or at least a portion of the lubricant to a chelating material of the present invention, including any of chelating materials 1 to 6.

The invention also includes a medium temperature refrigeration process for transferring heat, the process comprising:

(a) evaporating a refrigerant according to the present invention (including each of refrigerants 1-13) at a temperature in the range of about-10 ℃ to about-6.7 ℃ to produce a refrigerant vapor;

(b) compressing the refrigerant vapor to produce a refrigerant having a discharge temperature of less than about 135 ℃ in a POE lubricant lubricated compressor;

(c) condensing refrigerant from the compressor at a temperature of about 25 ℃ to about 45 ℃ to produce a refrigerant vapor; and

(d) exposing at least a portion of the refrigerant and/or at least a portion of the lubricant to a chelating material of the present invention, including any of chelating materials 1 to 6.

The present invention provides cryogenic refrigeration processes, including each cryogenic process as described in this paragraph, wherein the refrigerant vapor has a superheat degree at the evaporator exit of from about 0 ℃ to about 10 ℃, and a superheat degree in the suction line of from about 15 ℃ to about 50 ℃.

The present invention provides cryogenic refrigeration processes, including each cryogenic process as described in this paragraph, wherein the refrigerant vapor has a superheat degree at the evaporator exit of about 4 ℃ to about 6 ℃, and a superheat degree in the suction line of about 25 ℃ to about 30 ℃.

Use of

The present invention includes the use of a heat transfer composition comprising refrigerant 1 in a cryogenic refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 2 in a cryogenic refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 3 in a cryogenic refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 4 in a cryogenic refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 5 in a cryogenic refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 6 in a cryogenic refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 7 in a cryogenic refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 8 in a cryogenic refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 9 in a cryogenic refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 10 in a cryogenic refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 11 in a cryogenic refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 12 in a cryogenic refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 13 in a cryogenic refrigeration system.

The present invention includes the use of a heat transfer composition comprising refrigerant 1 in a medium temperature refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 2 in a medium temperature refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 3 in a medium temperature refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 4 in a medium temperature refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 5 in a medium temperature refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 6 in a medium temperature refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 7 in a medium temperature refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 8 in a medium temperature refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 9 in a medium temperature refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 10 in a medium temperature refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 11 in a medium temperature refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 12 in a medium temperature refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 13 in a medium temperature refrigeration system.

The present invention includes the use of a heat transfer composition comprising refrigerant 1 in a cryogenic transport refrigeration system.

The present invention includes the use of a heat transfer composition comprising refrigerant 2 in a cryogenic transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 3 in a low temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 4 in a cryogenic transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 5 in a cryogenic transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 6 in a cryogenic transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 7 in a cryogenic transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 8 in a cryogenic transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 9 in a cryogenic transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 10 in a cryogenic transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 11 in a cryogenic transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 12 in a low temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 13 in a cryogenic transport refrigeration system.

The present invention includes the use of a heat transfer composition comprising refrigerant 1 in a medium temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 2 in a medium temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 3 in a medium temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 4 in a medium temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 5 in a medium temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 6 in a medium temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 7 in a medium temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 8 in a medium temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 9 in a medium temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 10 in a medium temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 11 in a medium temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 12 in a medium temperature transport refrigeration system.

Accordingly, the present invention includes the use of a heat transfer composition comprising refrigerant 13 in a medium temperature transport refrigeration system.

Apparatus for systems, methods and uses

Examples of commonly used compressors for purposes of the present invention include reciprocating, rotary (including rotary piston and rotary vane type), scroll, screw and centrifugal compressors. Accordingly, the present invention provides heat transfer compositions (including those comprising any of refrigerants 1-13) and/or as described herein for each and any refrigerant (including each of refrigerants 1-13) in heat transfer systems including reciprocating, rotary (including rotary piston and rotary vane type), scroll, screw or centrifugal compressors.

Examples of common expansion devices for the purposes of the present invention include capillary tubes, fixed orifices, thermal expansion valves, and electronic expansion valves. Accordingly, the present invention provides each and any refrigerant (including each of refrigerants 1 through 13) and/or heat transfer compositions (including those comprising any of refrigerants 1 through 13) as described herein for use in a heat transfer system comprising a capillary tube, a fixed orifice, a thermal expansion valve, or an electronic expansion valve.

For the purposes of the present invention, the evaporator and condenser may each be independently selected from the group consisting of finned tube heat exchangers, microchannel heat exchangers, shell and tube heat exchangers, plate heat exchangers, and tube-in-tube heat exchangers. Accordingly, the present invention provides each and any one of the refrigerant and/or heat transfer compositions as described herein for use in a heat transfer system, wherein the evaporator and condenser together comprise a finned tube heat exchanger, a microchannel heat exchanger, a shell and tube heat exchanger, a plate heat exchanger, or a tube-in-tube heat exchanger.

The heat transfer compositions of the present invention are useful in heating and cooling applications. In particular features of the invention, the heat transfer composition can be used in a cooling process that includes condensing the heat transfer composition and subsequently evaporating the composition in the vicinity of an article or body to be cooled.

The heat transfer compositions of the present invention are provided for use in cryogenic refrigeration systems, including for each of the following:

-a low-temperature commercial refrigerator,

-a low-temperature commercial freezer,

-an ice-making machine,

-a vending machine for vending a product from a vending machine,

-a cryogenic transport refrigeration system,

-an industrial freezer, the freezer being,

-industrial refrigerators and

-a cryocooler.

The heat transfer compositions of the present invention are provided for use in medium temperature refrigeration systems, preferably for use in refrigerating food or beverages, such as in refrigerators or bottled beverage coolers. The system typically has an air-refrigerant evaporator for refrigerating food or beverages, a reciprocating, scroll or screw or rotary compressor, an air-refrigerant condenser that exchanges heat with ambient air, and a thermal or electronic expansion valve.

The heat transfer compositions of the present invention are provided for use in a cryogenic refrigeration system, wherein the cryogenic refrigeration system is preferably used in a freezer or ice-making machine. The system typically has an air-refrigerant evaporator for refrigerating food or beverages, a reciprocating, scroll or rotary compressor, an air-refrigerant condenser exchanging heat with ambient air, and a thermal or electronic expansion valve.

Each of the heat transfer compositions described herein, including heat transfer compositions containing any of refrigerants 1-13, is particularly provided for use in cryogenic systems having reciprocating, rotary (rotary piston or rotary vane) or scroll compressors.

Each of the heat transfer compositions described herein, including heat transfer compositions containing any of refrigerants 1-13, is particularly provided for use in medium temperature systems having reciprocating, rotary (rotary piston or rotary vane) or scroll compressors.

The invention also provides for the use of a heat transfer composition comprising refrigerant 1 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

The present invention also provides for the use of a heat transfer composition comprising refrigerant 2 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

The invention also provides for the use of a heat transfer composition comprising refrigerant 3 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

The present invention also provides for the use of a heat transfer composition comprising refrigerant 4 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

The present invention also provides for the use of a heat transfer composition comprising refrigerant 5 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

The present invention also provides for the use of a heat transfer composition comprising refrigerant 6 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

The present invention also provides for the use of a heat transfer composition comprising refrigerant 7 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

The invention also provides for the use of a heat transfer composition comprising refrigerant 8 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

The present invention also provides for the use of a heat transfer composition comprising refrigerant 9 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

The present invention also provides for the use of a heat transfer composition comprising refrigerant 10 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

The present invention also provides for the use of a heat transfer composition comprising refrigerant 11 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

The present invention also provides for the use of a heat transfer composition comprising refrigerant 12 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

The present invention also provides for the use of a heat transfer composition comprising refrigerant 13 in commercial refrigeration, particularly in a commercial refrigerator, a commercial freezer, an ice maker, or a vending machine.

Accordingly, the present invention provides a moderate temperature refrigeration system for refrigerating food or beverages, such as in a refrigerator or a bottle cooler, wherein the refrigerant has an evaporation temperature preferably in the range of about-12 ℃ to about 0 ℃, and in such a system the refrigerant has a condensation temperature preferably in the range of about 40 ℃ to about 70 ℃, or about 20 ℃ to about 70 ℃.

The medium temperature system of the present invention, including the system described in the immediately preceding paragraph, preferably has: such as an air-refrigerant evaporator for providing refrigeration to food or beverages contained therein, a reciprocating, scroll, or screw or rotary compressor, an air-refrigerant condenser that exchanges heat with ambient air, and a thermal or electronic expansion valve.

The heat transfer compositions of the present invention, including heat transfer compositions comprising any of refrigerants 1 through 13, are provided for use in cryogenic refrigeration systems, wherein the refrigerant has an evaporation temperature preferably in the range of about-40 ℃ to about-12 ℃, and the refrigerant has a condensation temperature preferably in the range of about 40 ℃ to about 70 ℃, or about 20 ℃ to about 70 ℃.

Accordingly, the present invention provides a cryogenic refrigeration system for providing cooling in a chiller, wherein the refrigerant (including any of refrigerants 1-13) has an evaporation temperature preferably in the range of about-40 ℃ to about-12 ℃, and the refrigerant has a condensation temperature preferably in the range of about 40 ℃ to about 70 ℃, or about 20 ℃ to about 70 ℃.

Accordingly, the present invention also provides a cryogenic refrigeration system for providing cooling in an ice cream machine, wherein the refrigerant (including any of refrigerants 1 to 13) has an evaporation temperature preferably in the range of about-40 ℃ to about-12 ℃, and the refrigerant has a condensation temperature preferably in the range of about 40 ℃ to about 70 ℃, or about 20 ℃ to about 70 ℃.

The cryogenic system of the present invention, including the system described in the immediately preceding paragraph, preferably has: an air-refrigerant evaporator for refrigerating food or beverages, a reciprocating, scroll or rotary compressor, an air-refrigerant condenser exchanging heat with ambient air, and a thermal or electronic expansion valve.

The heat transfer compositions disclosed herein are provided as low GWP alternatives to refrigerant R-404A. Thus, the heat transfer compositions and refrigerants of the present invention (including each of refrigerants 1 through 13 and all heat transfer compositions comprising refrigerants 1 through 13) can be used as alternative refrigerant/heat transfer compositions.

The present invention thus includes a method of replacing refrigerant in a heat transfer system designed or adapted for use with R-404A refrigerant.

The heat transfer compositions or refrigerants of the present invention are useful in new heat transfer systems.

It should be understood that when the heat transfer composition is used as a low GWP replacement for R-404A, or in a heat transfer system suitable for use with R-404A refrigerant or designed to contain or contain R-404A refrigerant, or for use with R-404A refrigerant, the heat transfer composition can consist essentially of the refrigerant of the present invention. Alternatively, the invention encompasses the use of the refrigerants of the present invention as low GWP replacements for R-404A in heat transfer systems suitable for use with R-404A refrigerants as described herein.

Thus, the compositions of the present invention preferably exhibit operating characteristics as compared to R-404A wherein the efficiency (COP) of the composition in the heat transfer system is 95% to 105% of the efficiency of R-404A, wherein the compositions of the present invention are used to replace R-404A refrigerants.

Preferably, the compositions of the present invention preferably exhibit an operating characteristic in which the efficiency (COP) of the composition in the heat transfer system is from 100% to 105% of the efficiency of R-404A, as compared to R-404A, wherein the compositions of the present invention are used to replace R-404A refrigerants.

In order to maintain the reliability of the heat transfer system, it is preferred that the composition of the present invention also exhibits the following characteristics in the heat transfer system, compared to R-404A:

-the discharge temperature is no more than 10 ℃ higher than the discharge temperature of R-404A; and

-the compressor pressure ratio is 95% to 105% of the compressor pressure ratio of R-404A,

wherein the composition of the present invention is used in place of R-404A refrigerant.

The compositions of the present invention are alternatively provided for use in replacing R404A in a refrigeration system. Thus, each of the heat transfer compositions as described herein, including the heat transfer composition comprising any of refrigerants 1 through 13, can be used in place of R404A in any of the systems disclosed herein.

Accordingly, a method is provided for replacing R-404A with refrigerant 1 as a replacement in a heat transfer system designed to contain or be suitable for use with R-404A refrigerant.

Accordingly, a method is provided for replacing R-404A with refrigerant 5 as a replacement in a heat transfer system designed to contain or be suitable for use with R-404A refrigerant.

Accordingly, a method is provided for replacing R-404A with refrigerant 5 as a replacement in a heat transfer system designed to contain or be suitable for use with R-404A refrigerant.

The invention relates to the use of a refrigerant 1 in a medium-or low-temperature refrigeration system, wherein the refrigerant 1

(a) An efficiency (COP) of about 95% to about 105% of the efficiency of R404A in the system;

and

(b) is non-flammable as determined according to the non-flammability test.

The invention relates to the use of a refrigerant 4 in a medium-or low-temperature refrigeration system, wherein the refrigerant 4

(a) An efficiency (COP) of about 95% to about 105% of the efficiency of R404A in the system and/or used in the method; and

(b) is non-flammable as determined according to the non-flammability test.

The invention relates to the use of a refrigerant 8 in a medium-or low-temperature refrigeration system, wherein the refrigerant 8

(a) An efficiency (COP) of about 95% to about 105% of the efficiency of R404A in the system and/or used in the method; and

(b) is non-flammable as determined according to the non-flammability test.