阅读说明：本技术 一种带燃气补偿功能的生物质源热泵系统及其使用方法 (Biomass source heat pump system with gas compensation function and use method thereof ) 是由 李法社 邱雪梅 王霜 隋猛 林守龙 于 2021-05-18 设计创作，主要内容包括：本发明公开一种带燃气补偿功能的生物质源热泵系统及其使用方法,系统包括发酵罐、凉水塔、室外换热器、压缩机、室内换热器、节流阀、四通换向阀、充气泵、水管Ⅰ、换热管、水管Ⅱ、沼气管；本发明系统具有能源补偿功能,可在夏季制冷时附带生产燃料沼气补偿系统运行能耗,北方夏季炎热的天气持续越长,中温厌氧沼气发酵系统运行越稳定,获得的燃料产出越多,能源补偿回报越稳定,并且具有环境友好,高效节能的特性,在运行过程中不会产生NO-X、SO-2、PM2.5等大气污染物,好氧发酵剩余物可做有机肥,系统制热COP可达4.3以上,即解决了传统热泵受制于环境温度限制的效率问题,也解决了生物质资源消纳与有机质废弃物环境污染问题。(The invention discloses a biomass source heat pump system with a fuel gas compensation function and a use method thereof, wherein the system comprises a fermentation tank, a water cooling tower, an outdoor heat exchanger, a compressor, an indoor heat exchanger, a throttle valve, a four-way reversing valve, an inflator pump, a water pipe I, a heat exchange pipe, a water pipe II and a methane pipe; the system has the function of energy compensation and can be used for producing in summerThe cold time is accompanied by the operation energy consumption of the fuel biogas compensation system, the longer the hot weather in summer in the north is, the more stable the medium-temperature anaerobic biogas fermentation system is, the more the obtained fuel is output, the more stable the energy compensation and return are, and the system has the characteristics of environmental protection, high efficiency and energy conservation, and can not generate NO in the operation process X 、SO 2 And PM2.5 and other atmospheric pollutants, and aerobic fermentation residues can be used as organic fertilizers, and the system heating COP can reach more than 4.3, so that the problem that the traditional heat pump is limited by the environmental temperature is solved, and the problems of biomass resource consumption and organic waste environmental pollution are also solved.)

1. A biomass source heat pump system with a fuel gas compensation function is characterized by comprising a fermentation tank (1), a water cooling tower (2), an outdoor heat exchanger (3), a compressor (4), an indoor heat exchanger (5), a throttle valve (6), a four-way reversing valve (7), an inflator pump (8), a water pipe I (9), a heat exchange pipe (10), a water pipe II (11) and a biogas pipe (12);

the bottom of the water cooling tower (2) is connected with the bottom of a heat exchange tube (10) through a water tube I (9), the heat exchange tube (10) longitudinally penetrates through the interior of the fermentation tank (1), the other end of the heat exchange tube (10) penetrates through the top of the fermentation tank (1) and then is communicated with a first port of an inner cavity of the outdoor heat exchanger (3), and a second port of the inner cavity of the outdoor heat exchanger (3) is connected with the top of the water cooling tower (2) through a water tube II (11);

the bottom of the fermentation tank (1) is connected with an inflator pump (8); the top of the fermentation tank (1) is connected with a biogas pipe (12);

one end of the outer cavity of the outdoor heat exchanger (3) is connected with a lower left channel of the four-way reversing valve (7), the other end of the outer cavity is connected with the indoor heat exchanger (5), and a throttle valve (6) is arranged between the two;

the other end of the indoor heat exchanger (5) is connected with a lower right channel of the four-way reversing valve (7),

the upper channel of the four-way reversing valve (7) is connected with an exhaust port of the compressor (4), and the lower middle channel is connected with an air suction port of the compressor (4).

2. The biomass source heat pump system with the fuel gas compensation function according to claim 1 is characterized in that a valve and a pump are arranged on a first port and a second port of an inner cavity of the outdoor heat exchanger (3), and a pump is also arranged on the water pipe I (9).

3. The use method of the biomass source heat pump system with the fuel gas compensation function as claimed in claim 1 is characterized by comprising the following specific steps:

(1) when the environmental temperature is lower in winter, the system operates under the heating condition, the four-way reversing valve (7) is connected with a power supply, high-temperature refrigerant vapor discharged by the compressor (4) is discharged to the indoor heat exchanger (5) after being switched by the four-way reversing valve (7), and the heat of the refrigerant exchanges heat with indoor cold air under the action of a centrifugal fan, so that the aim of indoor heating is fulfilled;

(2) the refrigerant after being released heat by the indoor heat exchanger (5) is condensed into liquid and then enters the outer cavity of the outdoor heat exchanger (3) through the throttle valve (6);

(3) fermentation materials are filled in the fermentation tank (1), air is introduced into the fermentation tank (1) by using an inflator pump (8) to enable the interior of the fermentation tank (1) to be subjected to aerobic fermentation to generate heat, water in the heat exchange tube (10) absorbs heat, enters the inner cavity of the outdoor heat exchanger (3) from a first opening of the inner cavity of the outdoor heat exchanger (3), exchanges heat with liquid refrigerant in the outer cavity of the outdoor heat exchanger (3), returns to the cooling water tower (2) through a water pipe II (11), and cold water in the cooling water tower (2) enters the heat exchange tube (10) from a water pipe I (9);

(4) liquid refrigerant in the outer cavity of the outdoor heat exchanger (3) is heated and evaporated by hot water in the inner cavity of the outdoor heat exchanger (3), enters the compressor (4) through the four-way reversing valve (7), and circulates in the way;

(5) when the ambient temperature is high in summer, the system operates under the refrigerating working condition, the four-way reversing valve (7) is powered off, high-temperature refrigerant steam discharged by the compressor (4) flows to the outer cavity of the outdoor heat exchanger (3) through the four-way reversing valve (7), cold water in the inner cavity of the outdoor heat exchanger (3) is heated in the outer cavity of the outdoor heat exchanger (3), the cold water enters from the water cooling tower (2) through a second port of the inner cavity of the outdoor heat exchanger (3), the refrigerant after heat exchange and temperature reduction enters the indoor heat exchanger (5) through the throttle valve (6) to absorb heat for vaporization, and then returns to the compressor (4) through the four-way reversing valve (7), and the process is circulated;

(6) after cold water in the inner cavity of the outdoor heat exchanger (3) absorbs heat of the refrigerant in the outer cavity, the cold water becomes hot, the hot water is pumped into the fermentation tank (1) to transfer heat energy to substances in the fermentation tank (1), medium-temperature anaerobic fermentation is realized, and methane is produced through fermentation for civil use.

4. The use method of the biomass source heat pump system with the fuel gas compensation function is characterized in that the fermentation tank (1) is filled with fermentation products including crop straws and animal excrement powder, and the mass ratio of the crop straws to the animal excrement is 3-6: 10.

5. The use method of the biomass source heat pump system with the fuel gas compensation function according to claim 4, wherein the crop straw is corn straw, and the animal excrement powder is dry cow dung powder.

6. The use method of the biomass source heat pump system with the fuel gas compensation function according to claim 4 is characterized in that under the heating working condition, an organic fertilizer fermentation agent is further added into the fermentation tank (1), the activation temperature is-10 ℃, and the mass ratio of the addition amount of the organic fertilizer fermentation agent to the mixture of the crop straws and the animal excrement powder is 0.5-2: 1000; under the refrigeration working condition, a biogas digester synergist is also added into the fermentation tank (1), and the volume ratio of the addition amount of the biogas digester synergist to the mixture of the crop straws and the animal excrement powder is 0.8-1: 100.

7. The use method of the biomass source heat pump system with the fuel gas compensation function according to claim 6, characterized in that water is also added into the fermentation tank (1) to make the initial water content in the fermentation tank (1) be 25-30%.

Technical Field

The invention relates to a biomass source heat pump system with a fuel gas compensation function and a using method thereof, belonging to the field of biomass fermentation heat utilization.

Background

Energy is a material basis for the existence and development of human society; over the past years, energy systems based on fossil fuels such as coal, petroleum, natural gas and the like have greatly promoted the development of human society. However, while the physical and mental lives are continuously improved, people also increasingly perceive the serious consequences caused by the large-scale use of fossil fuels, the resources are increasingly exhausted, the environment is continuously worsened, and political and economic disputes, even conflicts and wars between countries and regions are also induced. Therefore, people must seek a new, clean, safe, reliable sustainable energy system.

At present, the urban and rural areas in northern China need to be heated by 250 hundred million square meters, about 4 hundred million tons of standard coal are consumed each year, wherein scattered coal in rural areas is reduced to about 2 hundred million tons of standard coal, the emission intensity of unit pollutants for heating of scattered coal can reach nearly 27 times of that of a common coal-fired power plant and 15 times of that of a common industrial boiler, and the task of cleaning and heating is still huge. On the other hand, conventional heating systems have many limitations. For example: in the application of the soil source heat pump system in practical engineering, people find that the long-term operation of the heat pump system taking single soil as a heat source causes the soil heat unbalance due to the unbalanced cold and heat load; in the air source heat pump, for a severe cold area mainly used for heating, when the surface temperature of the air source heat pump heat exchanger is lower than the condensation point of water and the dew point of air, a frosting phenomenon can be generated in a region where the cold surface of the heat exchanger is contacted with water vapor in the air, and as the frost layer is accumulated to be thicker and thicker, the frost layer can be filled between the fins and the coil pipe, so that the energy consumption is increased, the COP is reduced, the performance of a refrigeration system is reduced, and sometimes even the system is stopped. Therefore, the application of the heat pump system is greatly popularized, and the heat pump system has important significance for innovating a heating development mode, continuously optimizing an energy structure, leading energy transformation and promoting high-quality development of an energy system.

The biomass energy is the fourth most energy resource in the world in primary energy consumption, is closely related to human life in the long history river, and also plays an important role in the future energy system of human. Therefore, the traditional energy production and consumption mode of China is changed, clean renewable energy such as biomass energy is utilized, and the method has great benefits for establishing a sustainable development energy system. According to data of Ministry of agriculture, nearly 50 hundred million tons of rural wastes exist in China every year, wherein 38 hundred million tons of livestock and poultry manure, nearly 9 million tons of crop straws and about 2 million tons of other organic wastes exist, the overall utilization rate is low, and the development potential is huge. Wherein, the comprehensive utilization rate of the livestock and poultry manure is less than 60 percent, and more than 30 percent of the livestock and poultry manure is directly discharged into surface water, thereby becoming a main source of agricultural pollution. If not treated and utilized, not only the environmental pollution is increased, but also the sustainable development of modern agriculture and animal husbandry is hindered. Practice proves that composting is an effective way for treating solid organic wastes, is one of important measures for managing and utilizing excrement and straws, is beneficial to harmlessness of excrement, and produces commercial organic fertilizers to realize resource utilization of excrement and straws.

Disclosure of Invention

The biomass source heat pump system with the fuel gas compensation function provided by the invention can effectively recover heat generated by aerobic fermentation of biomass, can drive a heat pump in a cold area, can maximally save energy resources, has the energy compensation function, can additionally produce fuel biogas during refrigeration in summer, reduces pollutant emission, saves energy and reduces emission.

The technical scheme of the invention is as follows:

a biomass source heat pump system with a gas compensation function comprises a fermentation tank 1, a water cooling tower 2, an outdoor heat exchanger 3, a compressor 4, an indoor heat exchanger 5, a throttle valve 6, a four-way reversing valve 7, an inflator pump 8, a water pipe I9, a heat exchange pipe 10, a water pipe II 11 and a biogas pipe 12;

the bottom of the water cooling tower 2 is connected with the bottom of a heat exchange tube 10 through a water pipe I9, the heat exchange tube 10 longitudinally penetrates through the fermentation tank 1, the other end of the heat exchange tube 10 penetrates through the top of the fermentation tank 1 and then is communicated with a first port of an inner cavity of the outdoor heat exchanger 3, and a second port of the inner cavity of the outdoor heat exchanger 3 is connected with the top of the water cooling tower 2 through a water pipe II 11;

the bottom of the fermentation tank 1 is connected with an inflator pump 8 to produce an aerobic environment; the top of the fermentation tank 1 is connected with a biogas pipe 12;

one end of the outer cavity of the outdoor heat exchanger 3 is connected with a lower left channel of the four-way reversing valve 7, the other end of the outer cavity of the heat exchanger 3 is connected with the indoor heat exchanger 5, and the throttle valve 6 is directly arranged on the two ends of the outer cavity;

the other end of the indoor heat exchanger 5 is connected with a lower right channel of a four-way reversing valve 7,

the upper channel of the four-way reversing valve 7 is connected with the exhaust port of the compressor 4, and the lower middle channel is connected with the air suction port of the compressor 4.

All set up valve and pump on 3 inner chambers of outdoor heat exchanger one mouthful and No. two mouthful, also set up the pump on water pipe I9, 3 inner chambers of outdoor heat exchanger can be the optional flow direction in the heat exchange tube 10 in the fermentation cylinder 1 or the cooling tower 2.

The invention also provides a using method of the biomass source heat pump system with the fuel gas compensation function, which comprises the following specific steps:

(1) when the environmental temperature is lower in winter, the system operates under the heating condition, the four-way reversing valve 7 is connected with a power supply to communicate the upper channel and the lower right channel of the four-way reversing valve 7, high-temperature refrigerant vapor discharged by the compressor 4 is discharged to the indoor heat exchanger 5 after being switched by the four-way reversing valve 7, and the heat of the refrigerant exchanges heat with indoor cold air under the action of a centrifugal fan to achieve the purpose of indoor heating;

(2) the refrigerant after being released heat by the indoor heat exchanger 5 is condensed into liquid and then enters the outer cavity of the outdoor heat exchanger 3 through the throttle valve 6;

(3) fermentation materials are filled in the fermentation tank 1, air is introduced into the fermentation tank 1 by using the inflator pump 8, so that the interior of the fermentation tank 1 is subjected to aerobic fermentation to generate heat, water in the heat exchange tube 10 absorbs heat, enters the inner cavity of the outdoor heat exchanger 3 from the first opening of the inner cavity of the outdoor heat exchanger 3, exchanges heat with liquid refrigerant in the outer cavity of the outdoor heat exchanger 3, and returns to the water cooling tower 2 through the water tube II 11, hot water can be discharged for civil use, and cold water in the water cooling tower 2 enters the heat exchange tube 10 again from the water tube I9;

(4) liquid refrigerant in the outer cavity of the outdoor heat exchanger 3 is heated and evaporated by hot water in the inner cavity of the outdoor heat exchanger 3, enters the compressor 4 through a lower left channel and a lower middle channel of the four-way reversing valve 7, and circulates in the way;

(5) when the ambient temperature is higher in summer, the system operates under the refrigeration working condition, the four-way reversing valve 7 is powered off, high-temperature refrigerant vapor discharged by the compressor 4 flows to the outer cavity of the outdoor heat exchanger 3 through the upper channel and the left lower channel of the four-way reversing valve 7, cold water in the inner cavity is heated in the outer cavity of the outdoor heat exchanger 3, the cold water enters from the water cooling tower 2 through a second port of the inner cavity of the outdoor heat exchanger 3 by a pump, the refrigerant after heat exchange and temperature reduction enters the indoor heat exchanger 5 through the throttle valve 6 to absorb heat and vaporize, and then returns to the compressor 4 through the four-way reversing valve 7, and the process is circulated;

(6) after the cold water in the inner cavity of the outdoor heat exchanger 3 absorbs the heat of the refrigerant in the outer cavity, the cold water becomes hot, the hot water is pumped into the fermentation tank 1, the heat energy is transferred to the substances in the fermentation tank 1, the medium-temperature anaerobic fermentation is realized, and the biogas is produced by fermentation and used for civil use. Fermentation products of crop straws and animal excrement powder are filled in the fermentation tank 1, and the mass ratio of the crop straws to the animal excrement is 3-6: 10; the crop straw is corn straw, and the animal excrement powder is dry cow dung powder; adding water into the fermentation tank 1 to ensure that the initial water content in the fermentation tank 1 is 25-30%; under the heating working condition, the fermentation tank 1 is also doped with an organic fertilizer fermentation microbial inoculum, the activation temperature is-10 ℃, the mass ratio of the addition amount of the organic fertilizer fermentation microbial inoculum to the mixture of the crop straws and the animal excrement powder is 0.5-2:1000, and the organic fertilizer fermentation microbial inoculum is a Shandong Beijia organic fertilizer fermentation microbial inoculum and is a conventional product purchased in the market; the fermentation tank 1 is also doped with a methane tank synergist under the refrigeration working condition, the volume ratio of the addition amount of the methane tank synergist to the mixture of the crop straws and the animal excrement powder is 0.8-1:100, and the methane tank synergist is a mountain river methane tank synergist and is a conventional product purchased in the market.

The invention has the beneficial effects that:

(1) the invention mixes the crop straws and the animal excrement powder according to the proportion to carry out aerobic composting to generate heat, can effectively recycle and utilize reaction heat, saves resources and protects the environment.

(2) The invention utilizes the heat generated by the fermentation of aerobic microorganisms and biomass, and the heat is pumped out by the heat pump system for indoor heat supply, thereby solving the problem that the COP coefficient of the air source heat pump is limited by the environmental temperature and overcoming the problem of soil temperature loss caused by long-time operation of the soil source heat pump.

(3) The invention is provided with the four-way reversing valve, effectively utilizes and recovers the waste heat of the external heat pump during refrigeration in summer, increases the utilization rate of the fermentation tank, still mixes biomass raw materials in the fermentation tank, and adopts the heat pump waste heat recovery to maintain the medium-temperature anaerobic fermentation in the tank to generate the biogas.

(4) The system has an energy compensation function, and can additionally produce fuel biogas compensation system operation energy consumption during refrigeration in summer, the longer the hot weather in summer in the north is, the more stable the medium-temperature anaerobic biogas fermentation system is, the more the obtained fuel is produced, the more stable the energy compensation return is, aerobic fermentation in winter and anaerobic fermentation in summer, and different microbial agents are used for fermentation twice, wherein the former is Shandongbei organic fertilizer starter, and the latter is a synergist for a methane tank in Shanhe. The system can produce heat, recover and preheat water in winter and produce hot water and refrigerate and recover waste heat to produce methane in summer, has the characteristics of environmental friendliness, high efficiency and energy conservation, and can not produce NO in the operation process_X、SO₂And PM2.5 and other atmospheric pollutants, and aerobic fermentation residues can be used as organic fertilizers, and the system heating COP can reach more than 4.3, so that the problem that the traditional heat pump is limited by the environmental temperature is solved, and the problems of biomass resource consumption and organic waste environmental pollution are also solved.

Drawings

FIG. 1 is a schematic structural diagram of a biomass source heat pump system with a fuel gas compensation function;

in the figure: 1-a fermentation tank, 2-a water cooling tower, 3-an outdoor heat exchanger, 4-a compressor, 5-an indoor heat exchanger, 6-a throttle valve, 7-a four-way reversing valve, 8-an inflator pump, 9-a water pipe I, 10-a heat exchange pipe, 11-a water pipe II and 12-a biogas pipe;

fig. 2 is a graph of the heat change of example 3 with the heat pump turned on for about 35 minutes.

Detailed Description

The invention will be further described with reference to the following figures and examples, but the scope of the invention is not limited thereto.

Example 1

A biomass source heat pump system with a fuel gas compensation function is shown in figure 1 and comprises a fermentation tank 1, a water cooling tower 2, an outdoor heat exchanger 3, a compressor 4, an indoor heat exchanger 5, a throttle valve 6, a four-way reversing valve 7, an inflator pump 8, a water pipe I9, a heat exchange pipe 10, a water pipe II 11 and a biogas pipe 12;

the bottom of the water cooling tower 2 is connected with the bottom of a heat exchange tube 10 through a water pipe I9, the heat exchange tube 10 longitudinally penetrates through the fermentation tank 1, the other end of the heat exchange tube 10 penetrates through the top of the fermentation tank 1 and then is communicated with a first port of an inner cavity of the outdoor heat exchanger 3, and a second port of the inner cavity of the outdoor heat exchanger 3 is connected with the top of the water cooling tower 2 through a water pipe II 11;

the bottom of the fermentation tank 1 is connected with an inflator pump 8 to produce an aerobic environment; the top of the fermentation tank 1 is connected with a biogas pipe 12 for civil use or a compressor 4 and an indoor heat exchanger 5;

one end of the outer cavity of the outdoor heat exchanger 3 is connected with a lower left channel of the four-way reversing valve 7, the other end of the outer cavity of the heat exchanger 3 is connected with the indoor heat exchanger 5, the two are directly provided with a throttle valve 6, and the throttle valve 6 is a two-way valve;

the other end of the indoor heat exchanger 5 is connected with a lower right channel of a four-way reversing valve 7,

the upper channel of the four-way reversing valve 7 is connected with the exhaust port of the compressor 4, and the lower middle channel is connected with the air suction port of the compressor 4.

Valves and pumps are arranged on the first port and the second port of the inner cavity of the outdoor heat exchanger 3, a pump is also arranged on the water pipe I9, the valves and the pumps are both bidirectional, and the inner cavity of the outdoor heat exchanger 3 can selectively flow into the heat exchange pipe 10 or the water cooling tower 2 in the fermentation tank 1; the system can normally operate at the ambient temperature of minus 30 ℃, can output heat energy indoors, and has the temperature of above 52 ℃ in the high-temperature period of the fermentation of the biomass mixture.

Example 2

The use method of the system in the embodiment 1 comprises the following specific steps:

(1) when the environmental temperature is lower (the temperature is lower than 12 ℃) in winter, the system operates under the heating condition, the four-way reversing valve 7 is connected with a power supply to communicate the upper channel and the lower right channel of the four-way reversing valve 7, high-temperature refrigerant steam discharged by the compressor 4 is discharged to the indoor heat exchanger 5 after being switched by the four-way reversing valve 7, and the heat of the refrigerant exchanges heat with indoor cold air under the action of a centrifugal fan to achieve the purpose of indoor heating;

(2) the refrigerant after being released heat by the indoor heat exchanger 5 is condensed into liquid and then enters the outer cavity of the outdoor heat exchanger 3 through the throttle valve 6; (3) fermentation materials are filled in the fermentation tank 1, air is introduced into the fermentation tank 1 by using the inflator pump 8, so that the interior of the fermentation tank 1 is subjected to aerobic fermentation to generate heat, water in the heat exchange tube 10 absorbs heat, enters the inner cavity of the outdoor heat exchanger 3 from the first opening of the inner cavity of the outdoor heat exchanger 3 by a pump, exchanges heat with liquid refrigerant in the outer cavity of the outdoor heat exchanger 3, returns to the water cooling tower 2 through the water tube II 11, hot water can be discharged for civil use, and cold water in the water cooling tower 2 enters the heat exchange tube 10 again from the water tube I9;

(4) liquid refrigerant in the outer cavity of the outdoor heat exchanger 3 is heated and evaporated by hot water in the inner cavity of the outdoor heat exchanger 3, enters the compressor 4 through a lower left channel and a lower middle channel of the four-way reversing valve 7, and circulates in the way;

(5) when the ambient temperature is higher in summer (the temperature is higher than 25 ℃), the system operates under the refrigeration working condition, the four-way reversing valve 7 is powered off, high-temperature refrigerant vapor discharged by the compressor 4 flows to the outer cavity of the outdoor heat exchanger 3 through the upper channel and the left lower channel of the four-way reversing valve 7, cold water in the inner cavity is heated in the outer cavity of the outdoor heat exchanger 3, the cold water enters from the water cooling tower 2 through the second port of the inner cavity of the outdoor heat exchanger 3 by a pump, the refrigerant after heat exchange and temperature reduction enters the indoor heat exchanger 5 through the throttle valve 6 to absorb heat and vaporize, and then returns to the compressor 4 through the four-way reversing valve 7, and the process is circulated;

(6) after the cold water in the inner cavity of the outdoor heat exchanger 3 absorbs the heat of the refrigerant in the outer cavity, the cold water becomes hot, the hot water is pumped into the fermentation tank 1, the heat energy is transferred to the substances in the fermentation tank 1, the medium temperature anaerobic fermentation at 35 ℃ is maintained, and the biogas is produced by fermentation and used for civil use or a compressor 4 and an indoor heat exchanger 5;

example 3

According to the method of the embodiment 2, the winter operation environment temperature is 10.5 ℃, the fermentation tank 1 is filled with the fermented product of the crop straws and the animal excrement powder, and the mass ratio of the crop straws to the animal excrement is 3: 10; the crop straw is corn straw, and the animal excrement powder is dry cow dung powder; adding water into the fermentation tank 1 to make the initial water content in the fermentation tank 1 be 26%; the fermentation tank 1 is also doped with an organic fertilizer fermentation microbial inoculum, the activation temperature is-10 ℃, the mass ratio of the addition amount of the organic fertilizer fermentation microbial inoculum to the mixture of crop straws and animal excrement powder is 0.5:1000, the organic fertilizer fermentation microbial inoculum is Shandong Beijia organic fertilizer fermentation microbial inoculum, the organic fertilizer fermentation microbial inoculum is a conventional product purchased from the market, and the volume of the fermentation tank is 0.1m³Initial volume of mixed biomass fermentation powder is 0.09m³When the heating temperature is 20 ℃, after the operation of the heat pump is started for about 35 minutes, the total temperature of the mixed biomass fermentation powder in the fermentation tank 1 is reduced from 55 ℃ to a temperature which tends to the environment, as shown in fig. 2, the trend of the temperature reduction of the material closer to the heat exchange tube 10 is more obvious, the heat exchange effect is better, the fermentation period of the mixed biomass is 20 days (the material is recharged after the fermentation is finished), the water content of the mixed biomass fermentation powder is 53 percent after the fermentation is finished, the volume is reduced by 27.9 percent, and the heating coefficient of the highest temperature point is about 4.28; the system has the operation environment temperature of 33 ℃ in summer, organic fertilizer fermentation bacteria are not added into a material mixture of a fermentation tank 1, a methane tank synergist is blended, the volume ratio of the addition amount of the methane tank synergist to a mixture of crop straws and animal excrement powder is 0.8:100, the methane tank synergist is a mountain and river methane tank synergist which is a commercially available conventional product, the rest conditions are the same as those in winter, the heat pump coefficient of performance (COP) is about 3.0, the refrigerating capacity of the system under 1-time refrigeration power consumption is 2.2kW, and the methane quantity generated by the system is 0.1Nm³/d。

Example 4

According to the method of the embodiment 2, the winter operation environment temperature is 11 ℃, the fermentation tank 1 is filled with the fermented product of the crop straws and the animal excrement powder, and the mass ratio of the crop straws to the animal excrement is 5: 10; the crop straw is corn straw, and the animal excrement powder is dry cow dung powder; water is also added into the fermentation tank 1 to ensure that the initial water content in the fermentation tank 1 is 30 percent; the fermentation tank 1 is also doped with an organic fertilizer fermentation microbial inoculum, the activation temperature is-10 ℃, the mass ratio of the addition amount of the organic fertilizer fermentation microbial inoculum to the mixture of crop straws and animal excrement powder is 1:1000, the organic fertilizer fermentation microbial inoculum is Shandongbeijia organic fertilizer fermentation agent which is a conventional product purchased from the market, and the volume of the fermentation tank is 0.1m³Initial volume of mixed biomass fermentation powder is 0.09m³When the heating temperature is 20 ℃, the temperature of each mixed biomass fermentation powder in the fermentation tank is reduced to the ambient temperature after the heat pump is started for about 30 minutes, the fermentation period of the mixed biomass is 20 days (the mixed biomass is recharged after the fermentation is finished), the initial water content of the mixed biomass fermentation powder is 53 percent after the fermentation is finished, the volume is reduced by 27.9 percent, and the heating coefficient of the highest temperature point is about 4.28; the system has the operation environment temperature of the system in summer of 26 ℃, the organic fertilizer fermentation microbial inoculum is not added into the material mixture of the fermentation tank 1, the biogas digester synergist is blended, the volume ratio of the addition amount of the biogas digester synergist to the mixture of the crop straws and the animal excrement powder is 0.9:100, the biogas digester synergist is a mountain river methane digester synergist and is a commercially available conventional product, and the rest conditions are the same as those in winter. The COP of the heat pump is about 3.2, the refrigerating capacity of the system under 1-P refrigerating power consumption is 2.3kW, and the methane generating capacity of the system is 0.11Nm³/d。

Example 5

The method of the embodiment is the same as that of the embodiment 2, the winter operation environment temperature of the embodiment is 12 ℃, the fermentation tank 1 is filled with the fermentation product of the crop straw and the animal excrement powder, and the mass ratio of the crop straw to the animal excrement is 6: 10; the crop straw is corn straw, and the animal excrement powder is dry cow dung powder; adding water into the fermentation tank 1 to make the initial water content in the fermentation tank 1 be 25%; the fermentation tank 1 is also doped with an organic fertilizer fermentation microbial inoculum, the activation temperature is-10 ℃, and the addition amount of the organic fertilizer fermentation microbial inoculumThe mass ratio of the organic fertilizer to the mixture of the crop straws and the animal excrement powder is 2:1000, the organic fertilizer fermentation microbial inoculum is ShandongBeijia organic fertilizer fermentation agent which is a conventional product purchased in the market, and the volume of the fermentation tank is 0.1m³Initial volume of mixed biomass fermentation powder is 0.09m³When the heating temperature is 20 ℃, the temperature of each mixed biomass fermentation powder in the fermentation tank is reduced to the ambient temperature after the heat pump is started for about 45 minutes, the fermentation period of the mixed biomass is 20 days (the mixed biomass is recharged after the fermentation is finished), the initial water content of the mixed biomass fermentation powder is 50 percent after the fermentation is finished, the volume is reduced by 28.2 percent, and the heating coefficient of the highest temperature point is about 4.3; the environmental temperature of the system operation in summer is 30 ℃, organic fertilizer fermentation bacteria agent is not added into the material mixture of the fermentation tank 1, the biogas digester synergist is blended, the volume ratio of the addition amount of the biogas digester synergist to the mixture of crop straws and animal excrement powder is 1:100, the biogas digester synergist is a mountain river beauty biogas digester synergist and is a conventional product purchased in the market, and the rest conditions are the same as those in winter. The COP of the heat pump is about 3.0, the refrigerating capacity of the system under 1-P refrigerating power consumption is 2.2kW, and the methane generating capacity of the system is 0.1Nm³/d。