CN110686422B - PVT (polyvinyl chloride) coupled night radiation double-source combined heat pump system, control method and intelligent household appliance - Google Patents
PVT (polyvinyl chloride) coupled night radiation double-source combined heat pump system, control method and intelligent household appliance Download PDFInfo
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- 230000005855 radiation Effects 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 36
- 229920000915 polyvinyl chloride Polymers 0.000 title abstract description 3
- 239000004800 polyvinyl chloride Substances 0.000 title abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 191
- 238000005338 heat storage Methods 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 239000003507 refrigerant Substances 0.000 claims description 57
- 230000008878 coupling Effects 0.000 claims description 25
- 238000010168 coupling process Methods 0.000 claims description 25
- 238000005859 coupling reaction Methods 0.000 claims description 25
- 238000005057 refrigeration Methods 0.000 claims description 19
- 239000002131 composite material Substances 0.000 claims description 18
- 238000004590 computer program Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 230000006870 function Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention provides a PVT (polyvinyl chloride) coupled night radiation double-source combined heat pump system, a control method and an intelligent household appliance, which comprise a first heat exchanger, an air source heat exchanger, a water source heat exchanger, a four-way reversing valve, a compressor, a PVT assembly, a heat storage water tank, an electronic expansion valve set, an electromagnetic valve set and a water pump, wherein the first heat exchanger is connected with the compressor through the four-way reversing valve; the invention realizes the functions of heating, refrigerating, supplying hot water and supplying power at different times, simultaneously improves the utilization rate of natural energy and reduces the energy consumption of the system.
Description
Technical Field
The invention relates to the technical field of PVT heat pumps, in particular to a PVT coupling night radiation double-source combined heat pump system, a control method and an intelligent household appliance.
Background
The radiation refrigeration is a passive refrigeration mode that objects on the ground perform radiation heat exchange with outer space with low temperature through a wave band of 8-13 mu m of one of the atmospheric windows so as to achieve a certain refrigeration effect. The radiation refrigeration has the advantages of zero energy consumption, zero pollution, no moving parts and the like, and has positive significance for cooling, energy saving and environmental protection of building air conditioners. However, the radiation refrigeration also has the defects that the power is not high enough, the cost of the device is high, the radiation refrigeration device is difficult to realize the refrigeration effect in the daytime, and the like.
The solar photovoltaic photo-thermal comprehensive utilization (PV/T) technology has received extensive attention and research due to its good solar photovoltaic photo-thermal comprehensive utilization efficiency. On one hand, the PV/T system effectively improves the comprehensive utilization efficiency of photovoltaic photo-thermal in unit area; on the other hand, the heat transfer working medium with lower temperature flows through the heat collecting plate to take away heat, so that the photoelectric efficiency is improved. However, due to the alternate day and night, PV/T systems are idle during the night, which greatly reduces their efficiency. On the other hand, the energy source fluctuation of the PV/T system is large, and the stable requirement of the user cannot be met.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a PVT (polyvinyl dichloride) coupled night radiation double-source combined heat pump system, which can combine the advantages of a PVT system and a radiation refrigerating device and can also meet the stable requirement of a user through complementation of various energy sources. Meanwhile, natural energy is utilized to the maximum extent, and the energy consumption of the system is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
a PVT coupling night radiation double-source combined type heat pump system comprises a first heat exchanger, an air source heat exchanger, a water source heat exchanger, a four-way reversing valve, a compressor, a PVT assembly, a heat storage water tank, an electronic expansion valve set, an electromagnetic valve set and a water pump, wherein the first heat exchanger is connected with the compressor through the four-way reversing valve, the air source heat exchanger is connected with the first heat exchanger, the water source heat exchanger is connected with the first heat exchanger, the electronic expansion valve set is used for controlling the flow of refrigerant, the water source heat exchanger is sequentially connected with the water pump and the heat storage water tank, the PVT assembly is connected with the heat storage water tank in parallel, and the electromagnetic valve set is respectively used for controlling the flow directions of the refrigerant and the water. The flow of the refrigerant is accurately controlled through the electronic expansion valve to realize the throttling effect, the flow direction of the refrigerant and water in the system is controlled through the electromagnetic valve, the system can stably and effectively operate under different weather conditions, the advantages of various energy sources of solar radiation energy, sky long-wave radiation energy and air energy are complementary, on one hand, the stable requirement of a user can be met, on the other hand, natural energy is fully utilized, and the energy consumption of the system is reduced to the maximum extent.
Furthermore, the electronic expansion valve group comprises a first electronic expansion valve and a second electronic expansion valve, the first electronic expansion valve is arranged on a connecting pipeline of the water source heat exchanger and the first heat exchanger, and the second electronic expansion valve is arranged on a connecting pipeline of the air source heat exchanger and the first heat exchanger. The refrigerant enters the water source heat exchanger or the first heat exchanger through the throttling of the first electronic expansion valve, the refrigerant enters the air source heat exchanger or the first heat exchanger through the second electronic expansion valve, and both the first electronic expansion valve and the second electronic expansion valve are used for accurately controlling the flow of the refrigerant.
Furthermore, the electromagnetic valve group comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve, a sixth electromagnetic valve and a seventh electromagnetic valve, the first electromagnetic valve is arranged on a connecting pipeline of the air source heat exchanger and the water source heat exchanger, the second electromagnetic valve is arranged on a connecting pipeline of the four-way reversing valve and the air source heat exchanger, the third electromagnetic valve is arranged on a connecting pipeline of the four-way reversing valve and the water source heat exchanger, the fourth electromagnetic valve is arranged on a water outlet pipeline of the heat storage water tank, the fifth electromagnetic valve is arranged on a connecting pipeline of the water pump and the heat storage water tank, the sixth electromagnetic valve is arranged on a water inlet pipeline of the heat storage water tank, and the seventh electromagnetic valve is arranged on a water inlet pipeline of the PVT assembly. The first electromagnetic valve controls the refrigerant to enter the air source heat exchanger or enter the water source heat exchanger, the second electromagnetic valve controls the refrigerant to enter the air source heat exchanger or controls the refrigerant to return to the compressor through the four-way reversing valve, the third electromagnetic valve controls the refrigerant to enter the water source heat exchanger or controls the refrigerant to return to the compressor through the four-way reversing valve, and the fourth electromagnetic valve controls the water after the heat of the heat storage water tank is released to return to the water pump or controls the heat of the PVT component to be transferred to the heat; controlling water flow to return to the water pump by a fifth electromagnetic valve; the sixth electromagnetic valve controls the heated water to enter the heat storage water tank to release heat or controls the water after heat release to return to the PVT assembly, the seventh electromagnetic valve controls the water to enter or flow out of the PVT assembly, and by controlling the flowing directions of the refrigerant and the water, the functions of heating, refrigerating, supplying hot water and supplying power can be realized in different time periods and different operation modes, the system operates all year round, and the equipment utilization rate and the space utilization rate are improved.
A PVT coupling night radiation double-source combined type heat pump control method is characterized in that the PVT coupling night radiation double-source combined type heat pump system is used, solar radiation energy conditions are detected and judged, then heat exchangers, electronic expansion valves and electromagnetic valves are controlled to work, and system operation stability under various conditions is achieved. The advantages of the PVT technology, the radiation refrigeration technology and the air source heat pump technology are fully utilized, the defects that a PVT system can only generate power and heat in the daytime and is idle at night, a radiation refrigeration device can only refrigerate at night and is idle at the daytime, the air source heat pump system is high in energy consumption and low in energy efficiency in winter are overcome, and the equipment utilization rate and the space utilization rate are improved.
Further, the detecting and judging solar radiation energy condition includes a first state, a second state and a third state, the first state is that solar radiation energy is sufficient, the second state is that solar radiation energy is insufficient, and the third state is that solar radiation energy is not available. The conditions of solar radiation energy are definitely distinguished, then different modes are operated according to different conditions, the system can stably operate under each condition, and the working efficiency of the equipment is improved.
Further, when the solar radiation energy is detected and judged to be in the first state and under the refrigerating working condition, the refrigerant is controlled to only enter the air source heat exchanger to release heat, and the PVT assembly absorbs the heat and transfers the heat to the heat storage water tank. When the solar radiation energy is sufficient, the requirement can be met only by operating the air source heat exchanger, and the water source heat exchanger does not need to be started under the condition, so that the resources are reasonably utilized, and unnecessary resources are not wasted.
Further, when the solar radiation energy is detected and judged to be in the second state and under the refrigerating working condition, the refrigerant is controlled to respectively enter the air source heat exchanger and the water source heat exchanger to release heat, and the PVT assembly absorbs the heat and transfers the heat to the heat storage water tank. Under the condition that solar radiation energy is insufficient, the air source heat exchanger and the water source heat exchanger can be operated simultaneously to effectively improve the efficiency, at the moment, solar energy is insufficient, and the heat that the PVT component provided for the heat storage water tank is probably insufficient, so some heat passes through the water source heat exchanger and passes to the heat storage water tank, guarantees user's hot water demand, effectively improves the work efficiency of system.
Further, when the solar radiation energy is detected and judged to be in the third state and under the refrigerating working condition, the refrigerant is controlled to enter the water source heat exchanger to release heat, and the heat released by the water source heat exchanger is transferred to provide heat to the heat storage water tank through water. Under the condition of no solar radiation energy, the air source heat exchanger does not work, and under the condition, only the water source heat exchanger can be started to work, and the waste heat is utilized to heat the heat storage water tank, so that the aim of ensuring stable and efficient operation under different conditions is fulfilled.
Further, when the solar radiation energy is detected and judged to be in the third state and under the heating condition, the refrigerant is controlled to only enter the air source heat exchanger to absorb heat. Under the working conditions of no solar radiation energy and heating, all heat is provided by the air source heat exchanger, and the refrigerant only enters the air source heat exchanger to absorb heat.
Further, when the solar radiation energy is detected and judged to be in the first state and under the heating condition, the refrigerant is controlled to only enter the water source heat exchanger to absorb heat, and the PVT assembly generates electricity while heating. Under the condition that solar radiation energy is sufficient and the heat supply requirement can be met, the refrigerant only enters the water source heat exchanger to absorb heat.
Further, when the solar radiation energy is detected and judged to be in the second state and under the heating condition, the refrigerant is controlled to respectively enter the air source heat exchanger and the water source heat exchanger to absorb heat, and the PVT assembly generates electricity while heating. Under the condition of insufficient solar radiation energy, the air source heat exchanger and the water source heat exchanger are operated to absorb heat, so that the stability and high efficiency of the working efficiency of the system are ensured.
Further, when the solar radiation energy is detected and judged to be in the third state and under the refrigeration working condition, whether the heat in the hot water storage tank is enough to meet the requirement is further detected and judged, and when the heat in the hot water storage tank can meet the requirement, the refrigerant is controlled to enter the water source heat exchanger to release heat, the released heat is transferred to the water, and the water enters the PVT assembly and is radiated to the atmosphere by the heat. And under the condition that the heat in the heat storage water tank meets the requirement, the heated water completely enters the PVT assembly to radiate the heat to the atmosphere.
Further, when the solar radiation energy is detected and judged to be in the third state and under the refrigeration working condition, whether the heat in the heat storage water tank is enough to meet the requirement is further detected and judged, when the heat in the heat storage water tank cannot meet the requirement, the refrigerant is controlled to enter the water source heat exchanger to release heat, the released heat is transferred to water, a part of water is controlled to enter the heat storage water tank to release heat, a part of water is controlled to enter the PVT assembly, and the heat is radiated to the atmosphere. Under the condition that the heat in the heat storage water tank does not meet the requirement, one part of the heated water enters the heat storage water tank for heat release to ensure that the heat meets the requirement, and the other part of the heated water enters the PVT assembly for heat release and radiation to the atmosphere and the outer space.
An intelligent appliance comprising a processor and a memory, said memory being adapted to store a computer program which, when invoked by said processor, implements the PVT-coupled nighttime radiation dual-source hybrid heat pump control method of any of the above.
A computer readable storage medium storing a computer program which when invoked by a processor implements the PVT-coupled nighttime radiation dual-source compound heat pump control method of any of the above.
The invention provides a PVT coupling night radiation double-source combined heat pump system, a control method and an intelligent household appliance, which have the beneficial effects that: (1) the main energy sources of the system are solar radiant energy, sky long-wave radiant energy and air energy, the advantages of various energy sources are complementary, on one hand, the stable requirement of a user can be met, on the other hand, natural energy is fully utilized, and the energy consumption of the system is reduced to the maximum extent; (2) the advantages of the PVT technology, the radiation refrigeration technology and the air source heat pump technology are fully utilized, and the limitations that a PVT system can only generate power and heat in the daytime and is idle at night, a radiation refrigeration device can only refrigerate at night and is idle at the daytime, the air source heat pump system is large in energy consumption and low in energy efficiency in winter are overcome; (3) the system can realize the functions of heating, refrigerating, supplying hot water and supplying power in different time intervals and different operation modes, and the system operates all year round, thereby improving the equipment utilization rate and the space utilization rate.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
In the figure: 1. a first heat exchanger; 3. an air source heat exchanger; 4. a water source heat exchanger; 5. a four-way reversing valve; 6. a compressor; 7. a PVT component; 8. a heat storage water tank; 10. a water pump; 201. a first electronic expansion valve; 202. a second electronic expansion valve; 901. a first solenoid valve; 902. a second solenoid valve; 903. a third electromagnetic valve; 904. a fourth solenoid valve; 905. a fifth solenoid valve; 906. a sixth electromagnetic valve; 907. a seventh solenoid valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of the present invention.
Example 1: a PVT coupled night radiation dual-source compound heat pump system.
A PVT coupling night radiation double-source combined heat pump system comprises a first heat exchanger 1, an air source heat exchanger 3, a water source heat exchanger 4, a four-way reversing valve 5, a compressor 6, a PVT assembly 7, a heat storage water tank 8, an electronic expansion valve group, an electromagnetic valve group and a water pump 10, the first heat exchanger 1 is connected with the compressor 6 through the four-way reversing valve 5, the air source heat exchanger 3 is connected with the four-way reversing valve 5, the water source heat exchanger 4 is connected with the four-way reversing valve 5, the air source heat exchanger 3 is connected with the first heat exchanger 1, the water source heat exchanger 4 is connected with the first heat exchanger 1, the electronic expansion valve group is used for controlling the flow of the refrigerant, the water source heat exchanger 4 is sequentially connected with a water pump 10 and a heat storage water tank 8, the PVT component 7 is connected with the heat storage water tank 8 in parallel, and the electromagnetic valve group is respectively used for controlling the flowing directions of the refrigerant and the water.
The electronic expansion valve group comprises a first electronic expansion valve 201 and a second electronic expansion valve 202, the first electronic expansion valve 201 is arranged on a connecting pipeline of the water source heat exchanger 4 and the first heat exchanger 1, and the second electronic expansion valve 202 is arranged on a connecting pipeline of the air source heat exchanger 3 and the first heat exchanger 1.
The electromagnetic valve group comprises a first electromagnetic valve 901, a second electromagnetic valve 902, a third electromagnetic valve 903, a fourth electromagnetic valve 904, a fifth electromagnetic valve 905, a sixth electromagnetic valve 906 and a seventh electromagnetic valve 907, wherein the first electromagnetic valve 901 is arranged on a connecting pipeline between the air source heat exchanger 3 and the water source heat exchanger 4, the second electromagnetic valve 902 is arranged on a connecting pipeline between the four-way reversing valve 5 and the air source heat exchanger 3, the third electromagnetic valve 903 is arranged on a connecting pipeline between the four-way reversing valve 5 and the water source heat exchanger 4, the fourth electromagnetic valve 904 is arranged on a water outlet pipeline of the heat storage water tank 8, the fifth electromagnetic valve 905 is arranged on a connecting pipeline between the water pump 10 and the heat storage water tank 8, the sixth electromagnetic valve 906 is arranged on a water inlet pipeline of the heat storage water tank 8, and the seventh electromagnetic valve 907 is arranged on a water inlet pipeline of.
In this embodiment, the refrigerant enters the water source heat exchanger 4 or the first heat exchanger 1 through the first electronic expansion valve 201, and the refrigerant enters the air source heat exchanger 3 or the first heat exchanger 1 through the second electronic expansion valve 202, so as to achieve the throttling effect by accurately controlling the flow rate of the refrigerant. The first electromagnetic valve 901 controls the refrigerant which releases heat through the water source heat exchanger 4 to enter the air source heat exchanger 3 again to release heat or controls the refrigerant which absorbs heat through the air source heat exchanger 3 to enter the water source heat exchanger 4 again to continuously absorb heat; the second electromagnetic valve 902 controls the refrigerant to enter the air source heat exchanger 3 to release heat or controls the refrigerant after absorbing heat to return to the compressor 6 through the four-way reversing valve 5; the third electromagnetic valve 903 controls the refrigerant to enter the water source heat exchanger 4 to release heat or controls the refrigerant after absorbing heat to return to the compressor 6 through the four-way reversing valve 5; the fourth electromagnetic valve 904 controls the water after the heat is released from the hot water storage tank 8 to return to the water pump 10 or controls the heat of the PVT module 7 to be transferred into the hot water storage tank 8; a fifth electromagnetic valve 905 controls water flow to return to the water pump 10; the sixth electromagnetic valve 906 controls heated water to enter the heat storage water tank 8 to release heat or controls the water after heat release to return to the PVT component 7, the seventh electromagnetic valve 907 controls water to enter or flow out of the PVT component 7, and under the condition of different solar radiation energies, the electromagnetic valves control the flowing directions of refrigerants and water through the throttling action of the electronic expansion valves, so that the functions of heating, refrigerating, supplying hot water and supplying power are realized under different time periods and different operation modes, the system operates all year round, and the equipment utilization rate and the space utilization rate are improved.
Example 2: a double-source composite heat pump control method for PVT coupling night radiation.
A PVT coupling night radiation double-source composite heat pump control method comprises the following specific steps:
under the refrigeration operating mode, when detecting that solar radiation energy is sufficient, can satisfy user's life hot water needs, only operate air source heat exchanger 3, the heat that PVT subassembly 7 absorbed passes to heat storage water tank 8 and supplies user's life needs. The refrigerant in the first heat exchanger 1 absorbs the heat of the room, enters the compressor 6 through the four-way reversing valve 5 for compression, enters the air source heat exchanger 3 through the second electromagnetic valve 902 for heat release, and enters the first heat exchanger 1 again through the second electronic expansion valve 202 for the next cycle after heat release.
Example 3: a double-source composite heat pump control method for PVT coupling night radiation.
A PVT coupling night radiation double-source composite heat pump control method comprises the following specific steps:
under the refrigeration operating mode, when detecting that solar radiation energy is not enough, can only satisfy partial life hot water, another part heat is provided by the water source heat exchanger, and operation air source heat exchanger 3 and water source heat exchanger 4, PVT subassembly 7 provide part heat for heat storage water tank 8, and the surplus heat is supplied by water source heat exchanger 4. At this time, the refrigerant in the first heat exchanger 1 absorbs the heat of the room, enters the compressor 6 through the four-way reversing valve 5 for compression, enters the water source heat exchanger 4 through the third electromagnetic valve 903 for heat release, the released heat is transferred to the heat storage water tank 8 through water, the refrigerant after heat release enters the air source heat exchanger 3 through the first electromagnetic valve 901 for heat release again, and then enters the first heat exchanger 1 through the second electronic expansion valve 202 for the next cycle again.
Example 4: a double-source composite heat pump control method for PVT coupling night radiation.
A PVT coupling night radiation double-source composite heat pump control method comprises the following specific steps:
under the refrigeration working condition, when no solar radiation energy is detected, the heat of the domestic hot water is provided by the water source heat exchanger, only the water source heat exchanger 4 is operated, and the heat of the heat storage water tank 8 is provided by the water source heat exchanger 4. At this time, the refrigerant in the first heat exchanger 1 absorbs the heat of the room, enters the compressor 6 through the four-way reversing valve 5 for compression, enters the water source heat exchanger 4 through the third electromagnetic valve 903 for heat release, and enters the first heat exchanger 1 again through the first electronic expansion valve 201 for the next cycle after heat release.
Example 5: a double-source composite heat pump control method for PVT coupling night radiation.
A PVT coupling night radiation double-source composite heat pump control method comprises the following specific steps:
under the refrigeration working condition, when no solar radiation energy is detected, the heat in the heat storage water tank can meet the requirements of users, only the water source heat exchanger 4 is operated, the refrigerant in the first heat exchanger 1 absorbs the heat of a room, then enters the compressor 6 through the four-way reversing valve 5 for compression, then enters the water source heat exchanger 4 through the third electromagnetic valve 903 for heat release, the released heat is transferred into water, and the water enters the PVT assembly 7 through the seventh electromagnetic valve 907 for heat radiation to the atmosphere and the outer space. And the refrigerant after heat release enters the first heat exchanger 1 again through the first electronic expansion valve 201 to perform the next cycle.
Example 6: a double-source composite heat pump control method for PVT coupling night radiation.
A PVT coupling night radiation double-source composite heat pump control method comprises the following specific steps:
under the refrigeration working condition, when no solar radiation energy is detected, the heat in the heat storage water tank can only meet part of heat requirements, the rest heat requirements are provided by the water source heat exchanger, only the water source heat exchanger 4 is operated, the refrigerant in the first heat exchanger 1 absorbs the room heat, then enters the compressor 6 through the four-way reversing valve 5 for compression, then enters the water source heat exchanger 4 through the third electromagnetic valve 903 for heat release, the released heat is transferred into water, part of the water enters the heat storage water tank 8 for heat release through the sixth electromagnetic valve 906, and part of the water enters the PVT assembly 7 through the seventh electromagnetic valve 907 for heat radiation to the atmosphere and outer space. And the refrigerant after heat release enters the first heat exchanger 1 again through the first electronic expansion valve 201 to perform the next cycle.
Example 7: a double-source composite heat pump control method for PVT coupling night radiation.
A PVT coupling night radiation double-source composite heat pump control method comprises the following specific steps:
under the heating condition, when the solar radiation energy is detected to be sufficient, the heat supply requirement can be met, and only the water source heat exchanger 4 is operated. The refrigerant releases heat in the first heat exchanger 1, and then enters the water source heat exchanger 4 through the first electronic expansion valve 201 to absorb heat, and the heat absorbed by the refrigerant comes from the heat obtained by the PVT assembly 7. The refrigerant after absorbing heat enters the compressor 6 through the third electromagnetic valve 903 and the four-way reversing valve 5 to be compressed, and then returns to the first heat exchanger 1 to perform the next cycle after being compressed.
Example 8: a double-source composite heat pump control method for PVT coupling night radiation.
A PVT coupling night radiation double-source composite heat pump control method comprises the following specific steps:
in the heating condition, when the solar radiation energy is detected to be insufficient, only part of heat supply can be provided, and the rest heat supply is provided by the air source heat exchanger, and the water source heat exchanger 4 and the air source heat exchanger 3 are operated. The refrigerant releases heat in the first heat exchanger 1, enters the air source heat exchanger 3 through the second electronic expansion valve 202 to absorb heat, enters the water source heat exchanger 4 through the first electromagnetic valve 901 to continuously absorb heat, enters the compressor 6 through the third electromagnetic valve 903 and the four-way reversing valve 5 to be compressed, and returns to the first heat exchanger 1 to perform the next cycle after being compressed.
Example 9: a double-source composite heat pump control method for PVT coupling night radiation.
A PVT coupling night radiation double-source composite heat pump control method comprises the following specific steps:
in the heating condition, when no solar radiation energy is detected, all heat is provided by the air source heat exchanger, and only the air source heat exchanger 3 is operated. The refrigerant releases heat in the first heat exchanger 1, enters the air source heat exchanger 3 through the second electronic expansion valve 202 to absorb heat, enters the compressor 6 through the second electromagnetic valve 902 and the four-way reversing valve 5 to be compressed, and returns to the first heat exchanger 1 to perform the next cycle after being compressed.
In addition, the PVT component 7 generates electricity while heating, and the generated electricity can be used by a system or other purposes of a user.
Example 10: an intelligent household appliance.
An intelligent appliance comprising a processor and a memory, the memory being configured to store a computer program that, when invoked by the processor, implements the dual-source compound heat pump control method of PVT-coupled nighttime radiation of any of embodiments 2-9.
Example 11: a computer readable storage medium.
A computer readable storage medium storing a computer program that when invoked by a processor implements the dual source compound heat pump control method of PVT coupled nighttime radiation of any of embodiments 2-9.
The above description is only for the preferred embodiment of the present invention, but the present invention should not be limited to the embodiment and the disclosure of the drawings, and therefore, all equivalent or modifications that do not depart from the spirit of the present invention are intended to fall within the scope of the present invention.
Claims (12)
1. A PVT coupling night radiation double-source combined heat pump system is characterized by comprising a first heat exchanger, an air source heat exchanger, a water source heat exchanger, a four-way reversing valve, a compressor, a PVT assembly, a heat storage water tank, an electronic expansion valve set, an electromagnetic valve set and a water pump, wherein the first heat exchanger is connected with the compressor through the four-way reversing valve, the air source heat exchanger is connected with the four-way reversing valve, the water source heat exchanger is connected with the four-way reversing valve, the air source heat exchanger is connected with the first heat exchanger, the water source heat exchanger is connected with the first heat exchanger, the electronic expansion valve set is used for controlling the flow of a refrigerant, the water source heat exchanger is sequentially connected with the water pump and the heat storage water tank, the PVT assembly is connected with the heat storage water tank in parallel, and the electromagnetic valve set is respectively,
the electromagnetic valve group comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve, a sixth electromagnetic valve and a seventh electromagnetic valve, wherein the first electromagnetic valve is arranged on a connecting pipeline of the air source heat exchanger and the water source heat exchanger, the second electromagnetic valve is arranged on a connecting pipeline of the four-way reversing valve and the air source heat exchanger, the third electromagnetic valve is arranged on a connecting pipeline of the four-way reversing valve and the water source heat exchanger, the fourth electromagnetic valve is arranged on a water outlet pipeline of the heat storage water tank, the fifth electromagnetic valve is arranged on a connecting pipeline of the water pump and the heat storage water tank, the sixth electromagnetic valve is arranged on a water inlet pipeline of the heat storage water tank, and the seventh electromagnetic valve is arranged on a water inlet pipeline of the PV.
2. The PVT-coupled nighttime radiation dual-source compound heat pump system of claim 1, wherein: the electronic expansion valve group comprises a first electronic expansion valve and a second electronic expansion valve, the first electronic expansion valve is arranged on a connecting pipeline of the water source heat exchanger and the first heat exchanger, and the second electronic expansion valve is arranged on a connecting pipeline of the air source heat exchanger and the first heat exchanger.
3. A PVT coupling night radiation double-source composite heat pump control method is characterized in that the PVT coupling night radiation double-source composite heat pump system as claimed in any one of claims 1-2 is used, the conditions of solar radiation energy are detected and judged, and then all heat exchangers, electronic expansion valves and electromagnetic valves are controlled to work, so that the system operation stability under various conditions is realized,
the detection and judgment of the solar radiation energy condition comprises a first state, a second state and a third state, wherein the first state is specifically that the solar radiation energy is sufficient, the second state is specifically that the solar radiation energy is insufficient, the third state is specifically that the solar radiation energy is not available,
when the solar radiation energy is detected and judged to be in the second state and under the refrigerating working condition, the refrigerant is controlled to respectively enter the air source heat exchanger and the water source heat exchanger to release heat, the released heat of the water source heat exchanger provides partial heat to the heat storage water tank through water transfer, and the PVT assembly absorbs the heat and then provides partial heat to the heat storage water tank.
4. The PVT-coupled night radiation dual-source hybrid heat pump control method of claim 3, wherein: when the solar radiation energy is detected and judged to be in the first state and under the refrigerating working condition, the refrigerant is controlled to only enter the air source heat exchanger to release heat, and the PVT assembly absorbs the heat and transfers the heat to the heat storage water tank.
5. The PVT-coupled night radiation dual-source hybrid heat pump control method of claim 3, wherein: when the solar radiation energy is detected and judged to be in the third state and under the refrigeration working condition, the refrigerant is controlled to enter the water source heat exchanger to release heat, and the heat released by the water source heat exchanger provides heat to the heat storage water tank through water transfer.
6. The PVT-coupled night radiation dual-source hybrid heat pump control method of claim 3, wherein: and when the solar radiation energy is detected and judged to be in the third state and under the heating condition, controlling the refrigerant to only enter the air source heat exchanger to absorb heat.
7. The PVT-coupled night radiation dual-source hybrid heat pump control method of claim 3, wherein: when the solar radiation energy is detected and judged to be in the first state and under the heating condition, the refrigerant is controlled to enter the water source heat exchanger to absorb heat, and the PVT component generates electricity while heating.
8. The PVT-coupled night radiation dual-source hybrid heat pump control method of claim 3, wherein: when the solar radiation energy is detected and judged to be in the second state and under the heating condition, the refrigerant is controlled to respectively enter the air source heat exchanger and the water source heat exchanger to absorb heat, and the PVT component generates electricity while heating.
9. The PVT-coupled night radiation dual-source hybrid heat pump control method of claim 3, wherein: when the solar radiation energy is detected and judged to be in the third state and under the refrigerating working condition, whether the heat in the heat storage water tank is enough to meet the requirement is further detected and judged, when the heat in the heat storage water tank can meet the requirement, the refrigerant is controlled to enter the water source heat exchanger to release heat, the released heat is transferred to water, the water enters the PVT assembly, and the heat is radiated to the atmosphere.
10. The PVT-coupled night radiation dual-source hybrid heat pump control method of claim 3, wherein: when the solar radiation energy is detected and judged to be in the third state and under the refrigerating working condition, whether the heat in the heat storage water tank is enough to meet the requirement is further detected and judged, when the heat in the heat storage water tank cannot meet the requirement, the refrigerant is controlled to enter the water source heat exchanger to release heat, the released heat is transferred to water, a part of water is controlled to enter the heat storage water tank to release heat, a part of water is controlled to enter the PVT assembly, and the heat is radiated to the atmosphere.
11. An intelligent appliance comprising a processor and a memory, said memory for storing a computer program, characterized in that: the computer program when invoked by the processor implements the dual source compound heat pump control method of PVT coupled night radiation of any of claims 3 to 10.
12. A computer-readable storage medium storing a computer program, characterized in that: the computer program when invoked by a processor implements the dual source compound heat pump control method of PVT coupled night radiation of any of claims 3 to 10.
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