阅读说明：本技术 被动式相变蓄能阳光间与空气源热泵耦合供热系统 (Passive phase-change energy-storage sunlight room and air source heat pump coupling heating system ) 是由 赵靖 刘德涵 吕石磊 于 2021-10-08 设计创作，主要内容包括：本发明公开了一种被动式相变蓄能阳光间与空气源热泵耦合供热系统,该系统包括被动式相变蓄能阳光间(7)、相变蓄热单元(11)、所需供热房间(8)以及设置于被动式相变蓄能阳光间(7)和所需供热房间(8)之间的空气源热泵热风机,所述相变蓄热单元(11)由数个相变蓄热模块(1)组成。与现有技术相比,本发明构件化的相变蓄热模块组装简单,布置灵活,可根据实际情况自由布置组合；在白天通过阳光间收集太阳能,减小了室温的波动性,延长了阳光间与室内通风换热的时间,提高了太阳能的利用效率；夜间减小了空气源热泵供暖的能耗,解决了太阳能间歇性和不稳定性的问题,达到了充分和全面利用太阳能的目的。(The invention discloses a passive phase-change energy-storage sunshine room and air source heat pump coupling heating system which comprises a passive phase-change energy-storage sunshine room (7), a phase-change heat storage unit (11), a required heating room (8) and an air source heat pump air heater arranged between the passive phase-change energy-storage sunshine room (7) and the required heating room (8), wherein the phase-change heat storage unit (11) is composed of a plurality of phase-change heat storage modules (1). Compared with the prior art, the component-based phase change heat storage module is simple to assemble and flexible to arrange, and can be freely arranged and combined according to actual conditions; the solar energy is collected in the sunshine room in the daytime, so that the fluctuation of the room temperature is reduced, the time of ventilation and heat exchange between the sunshine room and the room is prolonged, and the utilization efficiency of the solar energy is improved; the energy consumption of air source heat pump heating is reduced at night, the problems of solar energy intermittency and instability are solved, and the purpose of fully and comprehensively utilizing the solar energy is achieved.)

1. The utility model provides a passive form phase transition energy storage sunshine room and air source heat pump coupling heating system, its characterized in that, this system includes passive form phase transition energy storage sunshine room (7), phase transition heat accumulation unit (11), required heat supply room (8) and sets up the air source heat pump air heater between passive form phase transition energy storage sunshine room (7) and required heat supply room (8), phase transition heat accumulation unit (11) comprise several phase transition heat accumulation module (1).

2. The system according to claim 1, wherein the air source heat pump air heater further comprises an air source heat pump evaporator (2), an air source heat pump compressor (3), an air source heat pump condenser (4) and an air source heat pump expansion valve (5); wherein:

the phase-change heat storage unit (11) and the air source heat pump evaporator (2) are arranged in the passive phase-change energy storage sunlight room (7); arranging a ventilation port (6) and an air source heat pump condenser (4) in the room (8) requiring heat supply;

an air source heat pump expansion valve (5) and an air source heat pump compressor (3) are arranged on a loop formed by the air source heat pump evaporator (2) and the air source heat pump condenser (4).

3. The system for passively coupling the phase-change energy-storage solar heat room with the air source heat pump as claimed in claim 1, wherein the bottom, the front and the upper part of the phase-change heat storage module (1) are respectively provided with prismatic ventilating ducts (9) with the same size, and the top of the phase-change heat storage module is additionally welded with ventilation openings (10) with the same size as the prismatic ventilating ducts (9); and a ventilating pipeline (12) is arranged in the phase change heat storage module (1).

4. The system according to claim 3, wherein the phase-change heat storage module (1) is formed by welding stainless steel, the outer surface of the phase-change heat storage module is coated with a heat absorption coating, the interior of the phase-change heat storage module is filled with a phase-change material, the phase-change material is formed by compounding paraffin and an expanded graphite material, and the phase-change temperature of the phase-change heat storage module is 20-25 ℃.

5. The system of claim 3, wherein the ventilation openings of the phase-change heat storage modules at the top are spliced with the ventilation openings of other phase-change heat storage modules to realize the combination of the phase-change heat storage modules.

6. The system according to claim 3, wherein the front opening of the phase change heat storage module faces the interior of the passive phase change energy storage solar room to exchange heat with the air in the passive phase change energy storage solar room through natural convection; the phase change heat storage modules positioned at the top are transversely spliced, and the top ventilation openings of the phase change heat storage modules are connected with the room ventilation openings, so that high-temperature hot air and indoor heat convection in a passive phase change energy storage sunlight room can be conveniently carried out in the daytime.

Technical Field

The invention relates to the technical field of heat pumps and residential heating by using the heat pumps, in particular to a sunlight coupling heating system of an air source heat pump and passive solar energy storage.

Background

The air source heat pump is a clean heating technology which utilizes a steam compression circulating system driven by a motor to transfer heat in outdoor low-temperature environment air to the indoor space, and is widely popularized and applied in clean heating transformation in rural areas in the north of China. However, due to the low outdoor temperature in winter in the north, the system evaporation temperature of the air source heat pump is often in a relatively adverse environment temperature, which easily causes the compression ratio of the compressor to be too large, the heating capacity to be seriously insufficient, the unit heating efficiency (COP) to be greatly reduced, and the power consumption to be greatly increased.

In order to solve the problem of low-temperature adaptability of the air source heat pump, a solar auxiliary air source heat pump system becomes a research focus. The traditional mode that solar energy and air source heat pump combined together is mostly the evaporation side ambient temperature who utilizes solar water heating to raise the system, though can overcome the poor problem of traditional air source heat pump at low temperature environment operation effect, nevertheless because solar water system can't directly be connected with room heating system, causes the room and still needs to adopt air source heat pump heating in daytime, has led to the reduction of solar energy utilization ratio.

The passive sunlight room economically and effectively utilizes the solar energy utilization technology, is beneficial to improving the solar energy utilization rate and reducing the heat load of the building. But because the influence by solar radiation intensity is great between traditional passive form sunshine, have volatility, intermittent type nature characteristics, the difference in temperature is great round the clock, can't satisfy indoor all-weather heating demand.

The air source heat pump is combined with the passive sunlight room, so that the passive sunlight room can be used for heating in the daytime, the air source heat pump is used for heating at night, meanwhile, the COP of the air source heat pump can be improved by heat accumulated in the sunlight room in the daytime, and the time matching problem of room heating can be solved. However, since the conventional sunlight-to-sunlight heat storage capacity is low and heat cannot be released for a long time at night, how to improve the solar heat storage rate and maintain the high-efficiency heating section combining the solar heat storage rate and the heat, is a technical problem which needs to be solved at present.

Disclosure of Invention

In order to make up and improve the defects of the prior art, the invention provides a passive phase-change energy storage sunlight room and air source heat pump coupling heating system, and the heating system which utilizes the phase-change energy storage to increase the heat storage capacity of the sunlight room by utilizing an air source heat pump system so as to improve the solar energy utilization efficiency and improve the heating efficiency of an air source heat pump is realized.

The technical scheme adopted by the invention to solve the problems is as follows:

the utility model provides a passive form phase transition energy storage sunshine room and air source heat pump coupling heating system, this system include passive form phase transition energy storage sunshine room, phase transition heat accumulation unit, required heat supply room and set up in the passive form phase transition energy storage sunshine between and the air source heat pump air heater in required heat supply room, phase transition heat accumulation unit comprises several phase transition heat accumulation module.

The air source heat pump air heater further comprises an air source heat pump evaporator, an air source heat pump compressor, an air source heat pump condenser and an air source heat pump expansion valve; wherein:

the phase change heat storage unit and the air source heat pump evaporator are arranged in the passive phase change energy storage sunlight room; arranging a ventilation port and an air source heat pump condenser in the room needing heat supply;

and an air source heat pump expansion valve and an air source heat pump compressor are arranged on a loop formed by the air source heat pump evaporator and the air source heat pump condenser.

Prismatic ventilating ducts with the same size are respectively arranged at the bottom, the front part and the upper part of the phase change heat storage module, and ventilation openings with the same size as the prismatic ventilating ducts are additionally welded at the top of the phase change heat storage module; and a ventilating pipeline is arranged in the phase change heat storage module.

The phase-change heat storage module is formed by welding stainless steel, a heat absorption coating is coated on the outer surface of the phase-change heat storage module, a phase-change material is filled in the phase-change heat storage module, the phase-change material is formed by compounding paraffin and an expanded graphite material, and the phase-change temperature of the phase-change heat storage module is 20-25 ℃.

The vent of the phase change heat storage module positioned at the top is spliced with the vents of other phase change heat storage modules, so that the combination of a plurality of phase change heat storage modules is realized.

The front opening of the phase change heat storage module faces the interior of the passive phase change energy storage sunlight room so as to realize heat exchange with the air in the passive phase change energy storage sunlight room through natural convection; the phase change heat storage modules positioned at the top are transversely spliced, and the top ventilation openings of the phase change heat storage modules are connected with the room ventilation openings, so that high-temperature hot air and indoor heat convection in a passive phase change energy storage sunlight room can be conveniently carried out in the daytime.

Compared with the prior art, the invention has the following advantages:

1) the component-based phase change heat storage module is simple to assemble and flexible to arrange, and can be freely arranged and combined according to actual conditions. The dark outer surface coating can improve the solar energy collection rate, the connection among the ventilation openings of the modules is convenient for conveying warm air between the passive phase-change energy storage sunshine rooms indoors, and meanwhile, the heat exchange efficiency of the air inside the phase-change energy storage modules and the passive phase-change energy storage sunshine rooms is improved;

2) the operation time of the air source heat pump is reduced, the COP of the unit heating efficiency is increased, and the operation cost is greatly reduced.

3) The solar energy is collected in the passive phase-change energy-storage sunshine room in the daytime, heat is stored in the phase-change heat storage module and the passive phase-change energy-storage sunshine room wall body, and meanwhile, high-temperature air in the passive phase-change energy-storage sunshine room can meet indoor heating in the daytime through the ventilation opening and the movable window of the phase-change heat storage module; the peak value of the internal air temperature of the passive phase-change energy-storage sunlight room is reduced due to the storage of part of heat collected in the passive phase-change energy-storage sunlight room, the fluctuation of the room temperature is reduced, the time of ventilation and heat exchange between the passive phase-change energy-storage sunlight room and the room is prolonged, and the utilization efficiency of solar energy is improved;

4) when the air temperature in the passive phase-change energy-storage sunshine room is lower than the indoor temperature at night, the movable window and the ventilation air valve are closed, and the air source heat pump supplies heat to the indoor space. The ambient temperature of the air source heat pump evaporator is heated by the heat accumulated by the passive phase-change energy storage sunlight room and the phase-change heat storage module, the ambient temperature is maintained in a high COP working interval, the energy consumption of the air source heat pump for heating is reduced, the problems of solar energy intermittence and instability are solved, and the purpose of fully and comprehensively utilizing the solar energy is achieved.

Drawings

FIG. 1 is a schematic structural diagram of a passive phase-change energy-storage sunlight room and air source heat pump coupled heating system of the present invention;

FIG. 2 is a schematic view of the installation of a passive phase-change energy storage solar room, a room to be heated, a phase-change heat storage module and an air source heat pump evaporator;

FIG. 3 is a front view of a phase change thermal storage module;

fig. 4 is a cross-sectional view of a phase change thermal storage module;

FIG. 5 is a schematic diagram of phase change thermal storage module splicing;

the reference numbers illustrate:

1. the system comprises a phase change heat storage module, 2, an air source heat pump evaporator, 3, an air source heat pump compressor, 4, an air source heat pump condenser, 5, an air source heat pump expansion valve, 6, a ventilation port, 7, a passive phase change energy storage sunshine room, 8, a required heat supply room, 9, a prismatic ventilating duct, 10, a ventilation port, 11, a phase change heat storage unit, 12 and a ventilating duct.

Detailed Description

The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the passive phase-change energy-storage solar room and air source heat pump coupled heating system of the invention has a schematic structural diagram. The invention relates to a passive phase-change energy-storage sunlight room and air source heat pump coupling heating system which mainly comprises a passive phase-change energy-storage sunlight room, a phase-change heat storage module 1 and an air source heat pump air heater. The phase-change heat storage module 1 and the air source heat pump evaporator 2 are arranged in a passive phase-change energy storage sunlight room 7, and the air source heat pump condenser 4 and the air exchange port 6 are arranged in a room 8 requiring heat supply. An air source heat pump expansion valve 5 and an air source heat pump compressor 3 are arranged on a loop formed by the air source heat pump evaporator 2 and the air source heat pump condenser 4. The air source heat pump condenser 4 is arranged at the bottom of the room needing heat supply, and a blower is used for heating the room 8 needing heat supply.

As shown in fig. 2, the installation schematic diagram of the passive phase-change energy storage solar room, the room for supplying heat, the phase-change heat storage module and the air source heat pump evaporator is shown. The figure discloses the specific structure and the position relation of each part of the combination of a passive phase-change energy storage sunlight room, a required heat supply room, a phase-change heat storage unit and an air source heat pump evaporator. The phase change heat storage unit 11 of the passive phase change energy storage sunshine room is formed by adding phase change heat storage modules in the passive phase change energy storage sunshine room on the south side of the building, wherein the phase change heat storage unit 11 is composed of a plurality of phase change heat storage modules 1. The phase change heat storage units 11 are arranged on the basis of a solid wall surface of the passive phase change energy storage sunlight room, wherein the phase change heat storage units 11 close to the top of the north side of the passive phase change energy storage sunlight room are connected with indoor air through air exchange ports arranged on the south wall of the room. The air source heat pump evaporator 2 is arranged in the phase change heat storage module surrounding of the passive phase change energy storage sunlight room 7.

A passive phase-change energy-storage sunlight room is additionally built on the south side of a room needing heat supply, the passive phase-change energy-storage sunlight room is connected with a south wall of the room needing heat supply, the south wall is a solid wall of which the outer wall surface is coated with dark heat-insulating paint, and a bridge-cut-off aluminum high-transmittance heat-insulating window with a movable window is arranged on the south wall.

The bottom of the east-west vertical surface and the south vertical surface of the passive phase-change energy-storage sunlight room are composed of insulating bricks and inner and outer wall surface dark coatings, the upper parts of the roof and the south vertical surface are composed of high-transmittance insulating glass, and the high-transmittance insulating glass is hermetically connected with the east-west vertical wall and the south wall of the room through bridge-cut aluminum materials. The distance between the passive phase-change energy-storage sunlight room and the ground is increased by building insulating bricks at the bottom of the passive phase-change energy-storage sunlight room, and the heat insulation performance is improved.

As shown in fig. 3, is a front view of the phase change thermal storage module. As shown in fig. 4, a sectional view of the phase-change thermal storage module is shown. Prismatic ventilating ducts 9 with the same size are respectively arranged at the bottom, the front part and the upper part of the phase change heat storage module, and ventilation openings 10 with the same size as the prismatic ventilating ducts are additionally welded at the top of the phase change heat storage module. In order to ensure the sealing performance and the heat exchange efficiency of the phase change heat storage module, the phase change heat storage module is formed by welding stainless steel, a heat absorption coating is coated on the outer surface of the phase change heat storage module, a phase change material is filled in the phase change heat storage module, the phase change material is formed by compounding paraffin and an expanded graphite material, the phase change temperature of the phase change material is between 20 ℃ and 25 ℃, the stability of the indoor temperature in the daytime and the release of heat at night in the sunlight of passive phase change energy storage are favorably maintained, and the purposes of peak clipping and valley filling are achieved. Firstly, stainless steel is cut into shapes required by all sides of the module, then a ventilation pipeline 12 in the phase change heat accumulation module 1 and a ventilation opening 10 positioned at the top are welded, then steel plates with openings on the front, the upper and the lower sides are welded on the ventilation pipeline 12, and finally the steel plates on the rear and the left are welded. And injecting the molten phase-change material into the module through a right opening reserved in the phase-change heat storage module 1, and welding a right steel plate of the module after the phase-change material is completely filled in the module, so that the phase-change heat storage module 1 is constructed.

The vent at the top of the phase change heat storage module is spliced with the vents at the front parts and the bottom parts of other phase change heat storage modules, the vent at the top of the phase change heat storage module can be inserted into the openings at the front parts or the bottom parts of other phase change heat storage modules to be in mortise and tenon connection, so that the combination of a plurality of phase change heat storage modules can be realized, and the form of the spliced phase change heat storage module is shown in figure 5. In actual construction, the phase change heat storage modules should lean against the internal solid wall of the passive phase change energy storage sunlight room to be combined, and the spliced phase change heat storage modules are fixed on the solid wall in a gluing mode or a buckling mode. As shown in fig. 2, the phase change heat storage module should ensure that the front opening faces the interior of the passive phase change energy storage sunlight room, so as to realize heat exchange with the interior air of the passive phase change energy storage sunlight room through natural convection. The phase change heat storage modules at the top are transversely spliced, and the top ventilation openings of the phase change heat storage modules are connected with the room ventilation openings, so that high-temperature hot air and indoor heat convection in a passive phase change energy storage sunlight room in the daytime can be conveniently carried out.

The working process of the passive phase-change energy-storage sunlight room and air source heat pump coupling heating system is as follows:

the solar heating working condition of daytime energy storage and passive phase change energy storage is as follows: when weather conditions are good in the daytime, the temperature of the air in the passive phase-change energy-storage sunlight room rises, and the phase-change heat storage module directly absorbs solar radiation and exchanges heat with the air in the passive phase-change energy-storage sunlight room to store energy; meanwhile, a ventilation opening in the heat supply room is opened, and the air in the passive phase-change energy-storage sunlight room sends heat into the heat supply room through the ventilation opening to supply heat to the room.

Daytime energy storage and air heat pump heating working conditions: when weather conditions are general in the daytime, the temperature of the air inside the passive phase-change energy storage sunshine room is higher than the outdoor temperature but cannot be directly used for indoor heating, the phase-change heat storage module can directly absorb solar radiation to store energy at the moment, meanwhile, the temperature of the air inside the passive phase-change energy storage sunshine room can be increased, and the indoor heating energy consumption of the air source heat pump is reduced.

The heating working condition between the night energy release and the passive phase-change energy storage sunlight is as follows: when the phase change heat storage module stores sufficient heat in the daytime, the heat is released to the passive phase change energy storage sunlight room at night, and the room is heated through the indoor ventilation opening.

Energy release and air source heat pump heat supply working condition at night: when the heat of the phase change heat storage module is not enough to directly heat the air in the passive phase change energy storage sunlight room to the indoor heat supply, the indoor air source heat pump supplies heat at the moment, the phase change heat storage module releases the heat, the temperature of the evaporation side of the air source heat pump is increased, the COP (coefficient of performance) of the air source heat pump unit is increased, and the power consumption is reduced.