CN115031436A - Light-concentrating PV/T heat exchanger, light-concentrating PV/T heat pump system and heat pump operation method thereof - Google Patents
Light-concentrating PV/T heat exchanger, light-concentrating PV/T heat pump system and heat pump operation method thereof Download PDFInfo
- Publication number
- CN115031436A CN115031436A CN202210628868.0A CN202210628868A CN115031436A CN 115031436 A CN115031436 A CN 115031436A CN 202210628868 A CN202210628868 A CN 202210628868A CN 115031436 A CN115031436 A CN 115031436A
- Authority
- CN
- China
- Prior art keywords
- heat
- concentrating
- heat exchanger
- air
- exchange unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 238000005057 refrigeration Methods 0.000 claims abstract description 39
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 238000001704 evaporation Methods 0.000 claims description 23
- 230000008020 evaporation Effects 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 20
- 238000009833 condensation Methods 0.000 claims description 15
- 230000005494 condensation Effects 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 239000003507 refrigerant Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 4
- 238000010257 thawing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims 1
- 239000008393 encapsulating agent Substances 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 8
- 238000010248 power generation Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/71—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with parabolic reflective surfaces
-
- 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
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/20—Optical components
- H02S40/22—Light-reflecting or light-concentrating means
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/60—Thermal-PV hybrids
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses a concentrating PV/T heat exchanger, a concentrating PV/T heat pump system and a heat pump operation method thereof, wherein the concentrating PV/T heat exchanger comprises a photovoltaic module connected into a storage battery and a concentrating unit located at the periphery of the photovoltaic module and extending upwards along the front of the photovoltaic module, the back of the photovoltaic module is in heat conduction connection with the surface A of a microchannel heat exchange unit through a heat absorption plate, and the surface B of the microchannel heat exchange unit is in heat conduction connection with an air heat exchange unit; the microchannel heat exchange unit is provided with a working medium flow passage for circulation of a refrigerating working medium, and the working medium flow passage is connected to an external heat pump system, so that the light-concentrating PV/T heat exchanger is selectively used as an evaporator or a condenser; the solar heat collector effectively improves the heat flow density of solar radiation, the solar power generation conversion efficiency per unit area and the absorption utilization rate, can realize comprehensive utilization of solar energy and air sources during application, and can independently obtain heat from the air when no solar radiation exists at night so as to realize continuous heating all day long; and the refrigeration function can be realized according to the refrigeration requirement.
Description
Technical Field
The invention belongs to the technical field of solar photovoltaic photo-thermal, in particular to a light-concentrating PV/T heat exchanger, and also relates to a light-concentrating PV/T heat pump system applying the light-concentrating PV/T heat exchanger and a heat pump operation method thereof.
Background
The solar photovoltaic photo-thermal composite system (PV/T for short) can provide heat energy while providing electric power, so that the solar photovoltaic photo-thermal composite system has high comprehensive solar energy utilization efficiency and can meet various energy requirements of buildings.
However, for the flat plate type PV/T, on one hand, it needs to occupy a large laying area to meet the building energy requirement, and on the other hand, the hot water temperature throughout the day is limited, and under the condition of weak solar radiation intensity, the requirements of users on heat and electricity can not be met.
Furthermore, the PV/T known in the art typically includes a solar photovoltaic unit and an air source heat pump unit, wherein the air source is one of the most dominant low-level heat sources of its air source heat pump unit. The performance of the air source heat pump unit is greatly influenced by the outdoor ambient temperature, so that the application of the air source heat pump unit is limited. When the temperature of the surface of the outdoor heat exchanger of the air source heat pump unit is lower than 0 ℃ and lower than the dew point temperature of air during winter operation, moisture in the air can be condensed into frost on the surface of the heat exchanger, so that the coefficient of performance of the heat exchanger is remarkably reduced. Meanwhile, when the outdoor temperature is reduced, the heat load of the building is increased along with the reduction of the heat supply capacity of the air source heat pump unit, and an auxiliary heat source is needed to make up for the imbalance of energy supply and demand.
Based on the above current situation, the applicant hopes to seek further innovative technical solutions to solve the above technical problems.
Disclosure of Invention
In view of the above, the present invention provides a light-concentrating PV/T heat exchanger, a light-concentrating PV/T heat pump system and a heat pump operation method thereof, which effectively improve the heat flux density of solar radiation, the solar power generation conversion efficiency per unit area and the absorption utilization rate by providing an original light-concentrating PV/T heat exchanger structure design, and the light-concentrating PV/T heat exchanger is selectively used as an evaporator or a condenser, and when in application, the working modes of a dual heat source heating mode, a solar heating mode, an air source heating mode and an air source cooling mode can be selected according to actual application conditions, so that solar energy and an air source can be comprehensively utilized, and heat can be obtained from air independently when no solar radiation exists at night, thereby realizing continuous heating throughout the day; and the refrigeration function can be realized according to the refrigeration requirement.
The technical scheme adopted by the invention is as follows:
a concentrating PV/T heat exchanger comprises a photovoltaic module connected into a storage battery and a concentrating unit located on the periphery of the photovoltaic module and extending upwards along the front face of the photovoltaic module, wherein the back face of the photovoltaic module is in heat conduction connection with the surface A of a micro-channel heat exchange unit through a heat absorption plate, and the surface B of the micro-channel heat exchange unit is in heat conduction connection with an air heat exchange unit; the micro-channel heat exchange unit is provided with a working medium flow channel for circulation of a refrigerating working medium, and the working medium flow channel is connected to an external heat pump system, so that the light-concentrating PV/T heat exchanger can be selectively used as an evaporator or a condenser.
Preferably, in the circulating operation of the concentrating PV/T heat pump, when the heat pump belongs to a heating mode, the concentrating PV/T heat exchanger is used as an evaporator, the microchannel heat exchange unit absorbs heat energy from the heat absorbing plate and/or the air heat exchange unit, and the refrigeration working medium in the working medium flow channel is heated through the heat energy, so that the refrigeration working medium absorbs heat and evaporates; when the heat pump belongs to an air source refrigeration mode, the light-concentrating PV/T heat exchanger is used as a condenser, heat is transferred to air through the air heat exchange unit, and condensation heat release is achieved.
Preferably, the photovoltaic module, the heat absorbing plate, the micro-channel heat exchange unit and the air heat exchange unit are sequentially overlapped into a whole in the vertical direction; the photovoltaic assembly is laminated into a whole through a laminating process, and the heat absorbing plate is respectively bonded with the back of the photovoltaic assembly and the surface A of the micro-channel heat exchange unit into a whole in a heat conducting mode.
Preferably, the photovoltaic module comprises a plurality of photovoltaic cell pieces which are encapsulated and protected through an encapsulation layer, wherein light-transmitting gaps are formed between the adjacent photovoltaic cell pieces; the heat absorption plate is made of aluminum plates, the micro-channel heat exchange unit comprises aluminum micro-channel tubes which are arranged in the horizontal direction, and the interior of each aluminum micro-channel tube is used as a working medium flow channel for circulation of a refrigeration working medium.
Preferably, the air heat exchange unit adopts a fin type heat exchange structure and is fixedly installed and connected with the surface B of the micro-channel heat exchange unit into a whole in a welding mode.
Preferably, the light condensing unit adopts a compound parabolic light condenser, the compound parabolic light condenser extends upwards in an expanding manner along the front surface of the photovoltaic module, and an inner circumferential reflecting surface of the compound parabolic light condenser is an arc mirror surface.
Preferably, the concentrating PV/T heat pump system comprises the concentrating PV/T heat exchanger, the compressor, the air heat exchanger and the throttle valve, wherein a heat pump evaporative condensation work circulation loop is formed among the concentrating PV/T heat exchanger, the compressor, the air heat exchanger and the throttle valve.
Preferably, the system also comprises a liquid storage tank, a four-way valve and a water tank, wherein a first passage of the four-way valve is connected with an outlet of the light-concentrating PV/T heat exchanger, a second passage of the four-way valve is connected with an inlet of the compressor, a third passage of the four-way valve is respectively connected with an inlet of the air heat exchanger and a working medium flow passage of the water tank, and a fourth passage of the four-way valve is connected with the liquid storage tank; and a working medium flow passage of the water tank is connected to an inlet of the light-concentrating PV/T heat exchanger through the throttle valve, and meanwhile, another closed loop is formed among the compressor, the four-way valve and the liquid storage tank.
Preferably, the heat pump operation method of the concentrating PV/T heat pump system adopts the concentrating PV/T heat pump system; comprises a double-heat-source heating mode, a solar heating mode, an air-source heating mode and an air-source cooling mode, wherein,
the dual heat source heating mode includes: when the solar irradiation condition of the light-concentrating PV/T heat pump system meets the expected target condition of solar irradiation and the ambient temperature meets the expected target condition of ambient temperature, the light-concentrating PV/T heat exchanger is used as an evaporator, the air heat exchanger or the water tank is used as a condenser, and the micro-channel heat exchange unit absorbs heat energy from the heat absorption plate and the air heat exchange unit;
the solar heating mode includes: when the ambient temperature does not meet the expected target condition of the ambient temperature but the solar irradiation condition meets the expected target condition of solar irradiation, the light-concentrating PV/T heat exchanger is used as an evaporator, the air heat exchanger or the water tank is used as a condenser, and the microchannel heat exchange unit only absorbs heat energy from the heat absorption plate;
the air source heating mode comprises: when the solar irradiation condition does not meet the expected target condition of solar irradiation, but the ambient temperature meets the expected target condition of the ambient temperature, the light-concentrating PV/T heat exchanger is used as an evaporator, the air heat exchanger or the water tank is used as a condenser, and the microchannel heat exchange unit only absorbs heat energy from the air heat exchange unit;
the air source cooling mode includes: when the light-concentrating PV/T heat pump system needs to refrigerate, a heat pump evaporation and condensation working circulation loop which is opposite to a heating mode is adopted for refrigerating working media, the light-concentrating PV/T heat exchanger is used as a condenser, and the air heat exchanger is used as an evaporator.
Preferably, in the dual-heat-source heating mode and/or the air-source heating mode, the evaporation temperature of the concentrating PV/T heat pump system is lower than the ambient temperature, and forced convection is adopted with the environment; in the solar heating mode, when the surface temperature of the air heat exchanger is lower than 0 ℃ and lower than the dew point temperature of air, the evaporation temperature of the light-concentrating PV/T heat pump system is higher than the critical temperature of frosting, so that the aim of defrosting is fulfilled; in the air source refrigeration mode, the light-concentrating PV/T heat pump system is in forced convection with the environment, and the refrigeration working medium in the micro-channel heat exchange unit releases heat to the environment and condenses the gas state into a liquid state.
The invention creatively provides a light-concentrating PV/T heat exchanger and a technical scheme of a light-concentrating PV/T heat pump system thereof, and at least brings the following technical effects:
1. the heat pump technology is combined with the light-concentrating photovoltaic photo-thermal technology, a refrigerant is used as a refrigerating medium of the photovoltaic cell, and the refrigerating medium has good flowing heat transfer characteristics, is in a two-phase region in the evaporation and condensation processes, so that the heat convection coefficient of the refrigerating medium and the pipe wall of a medium flow passage is remarkably improved, and the effect of uniform temperature can be maintained, so that the photovoltaic module can be ensured to maintain proper working temperature, the temperature uniformity of the surface of the photovoltaic module is improved, the generation of thermal stress is avoided, and the service life of PV/T is prolonged.
2. The working mode is selected according to actual application conditions, so that the heating modes including a double-heat-source heating mode, a solar heating mode and an air-source heating mode are realized, the solar energy and the air source can be comprehensively utilized, heat can be independently obtained from the air when no solar radiation exists at night, and continuous heating throughout the day is realized. According to the invention, an air source refrigeration mode can be flexibly realized as required, in the air source refrigeration mode, the light-concentrating PV/T heat exchanger is used as a condenser, the air heat exchanger is used as an evaporator, the light-concentrating PV/T heat pump system is in forced convection with the environment, the refrigeration working medium in the micro-channel heat exchange unit releases heat to the environment, the heat is condensed from a gas state to a liquid state, the condensation heat and the heat generated by solar irradiation can be effectively released to the environment, the refrigeration working medium is effectively cooled, and the refrigeration function is realized.
3. The heat exchange unit structure with the microchannel structure has the advantages of large specific surface area, high heat transfer rate and high safety, has a better heat exchange effect when being used as a heat exchange structure, and can transfer a large amount of heat in time to maintain proper working temperature; meanwhile, the air heat exchange unit is arranged on the surface B of the micro-channel heat exchange unit, heat exchange between the refrigerating working medium and air can be obviously enhanced through the air heat exchange unit, and the heat exchange amount of the air side can be flexibly controlled by adjusting the evaporation temperature of the refrigerating working medium even if the air temperature is lower, so that frosting is avoided
4. The condenser in the invention preferably adopts a compound parabolic condenser, which not only can reduce the laying area of the photovoltaic cell with high price and reduce the cost of photovoltaic power generation, but also obviously and effectively improves the heat flux density of solar radiation, the conversion efficiency of solar power generation in unit area and the absorption utilization rate.
Drawings
FIG. 1 is a schematic diagram of a concentrating PV/T heat exchanger according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a concentrating PV/T heat pump system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an operating state of the concentrating PV/T heat exchanger in the dual heat source heating mode according to embodiment 1 of the present invention;
FIG. 4 is a schematic diagram of the junction operating state of the concentrating PV/T heat exchanger in the solar heating mode of example 2 of the present invention;
fig. 5 is a schematic view of the concentrating PV/T heat exchanger in the air-source heating mode according to embodiment 3 of the present invention;
fig. 6 is a schematic diagram of the operation state of the concentrating PV/T heat exchanger in the air source cooling mode according to example 4 of the present invention.
Detailed Description
The embodiment provides a concentrating PV/T heat exchanger, which comprises a photovoltaic module connected to a storage battery and a concentrating unit located on the periphery of the photovoltaic module and extending upwards along the front surface of the photovoltaic module, wherein the back surface of the photovoltaic module is in heat conduction connection with a surface A of a microchannel heat exchange unit through a heat absorbing plate, and a surface B of the microchannel heat exchange unit is in heat conduction connection with an air heat exchange unit; the microchannel heat exchange unit is provided with a working medium flow passage for circulation of a refrigerating working medium, and the working medium flow passage is connected to an external heat pump system, so that the light-concentrating PV/T heat exchanger is selectively used as an evaporator or a condenser.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to a light-concentrating PV/T heat exchanger 1 shown in fig. 1, which includes a photovoltaic module 1B connected to a storage battery 2 through a controller 2a, and a light-concentrating unit 1a located at the periphery of the photovoltaic module 1B and extending upward along the front of the photovoltaic module 1B, wherein the back of the photovoltaic module 1B is connected with a surface a of a microchannel heat exchange unit 1d through a heat absorbing plate 1c in a heat conducting manner, and a surface B of the microchannel heat exchange unit 1d is connected with an air heat exchange unit 1e in a heat conducting manner; the micro-channel heat exchange unit 1d is provided with a working medium flow channel for circulation of a refrigeration working medium, and the working medium flow channel is connected to an external heat pump system (see fig. 2 for combination), so that the light-concentrating PV/T heat exchanger 1 is selectively used as an evaporator or a condenser.
Preferably, in the present embodiment, in the heat pump cycle operation of the concentrating PV/T, when the heat pump belongs to the heating mode, the concentrating PV/T heat exchanger 1 serves as an evaporator, the microchannel heat exchange unit 1d absorbs heat energy from the heat absorbing plate 1c and/or the air heat exchange unit 1e, and the refrigerant located in the refrigerant flow channel is heated by the heat energy, so that the refrigerant absorbs heat and evaporates; when the heat pump belongs to an air source refrigeration mode, the light-concentrating PV/T heat exchanger 1 serves as a condenser and transfers heat to air through the air heat exchange unit 1e, so that condensation heat release is realized.
Preferably, in order to facilitate the installation effect, in the present embodiment, the photovoltaic module 1b, the heat absorbing plate 1c, the microchannel heat exchange unit 1d, and the air heat exchange unit 1e are sequentially stacked in an up-down direction; the photovoltaic module 1b is laminated into a whole through a laminating process, and the heat absorption plate 1c is respectively bonded with the back of the photovoltaic module 1b and the surface A of the micro-channel heat exchange unit 1d into a whole in a heat conduction mode; particularly preferably, the heat absorbing plate 1c can be directly bonded and compounded with the back surface of the photovoltaic module 1b into a whole through a laminating process, and can also be bonded into a whole through heat conducting glue; the heat absorbing plate 1c is thermally bonded to the surface a of the microchannel heat exchange unit 1d through a thermally conductive adhesive as a whole as long as the thermally conductive bonding effect can be achieved, and the embodiment does not have unique limitation on the specific adopted mode. Preferably, in this embodiment, the air heat exchange unit 1e is a fin type heat exchange structure, and is fixedly installed and connected with the surface B of the microchannel heat exchange unit 1d as a whole by welding.
Preferably, in this embodiment, the photovoltaic module 1b includes a plurality of photovoltaic cells encapsulated and protected by an encapsulation layer, wherein a light-transmitting gap is formed between adjacent photovoltaic cells, which is beneficial to heat transfer effect; the heat absorbing plate 1c is made of an aluminum plate, the micro-channel heat exchange unit 1d comprises aluminum micro-channel tubes (specifically, a plurality of rectangular flow channels are transversely arranged) which are arranged in the horizontal direction, and the interiors of the aluminum micro-channel tubes are used as working medium flow channels for circulation of a refrigeration working medium; particularly preferably, in the present embodiment, the aluminum microchannel tube has the following dimensional specifications: the wall thickness is 0.05mm, the inner diameter is 4-6mm, the pipe is flat and tubular, it is made by hot extrusion, its surface is galvanized and anti-corrosion treated, and the inlet and outlet are respectively equipped with collecting pipe.
Preferably, in the present embodiment, the light condensing unit 1a employs a compound parabolic light condenser, and the compound parabolic light condenser extends upward in an expanding manner along the front surface of the photovoltaic module 1b, wherein the inner circumferential reflective surface of the compound parabolic light condenser is an arc mirror surface; particularly preferably, in the present embodiment, the compound parabolic condenser is a condenser with a condensing ratio of 3 to 10. In order to facilitate the installation effect, the bottom of the compound parabolic concentrator can be fixedly installed and connected with the periphery of the micro-channel heat exchange unit 1 d.
As shown in fig. 2, the present embodiment further provides a light-concentrating PV/T heat pump system, which includes the light-concentrating PV/T heat exchanger 1, a compressor 3 (specifically, an inverter compressor 3 controlled by an inverter), an air heat exchanger 4, and a throttle valve 5 (specifically, an electronic expansion valve), where a heat pump evaporation and condensation work cycle loop is formed among the light-concentrating PV/T heat exchanger 1, the compressor 3, the air heat exchanger 4, and the throttle valve 5; preferably, in the present embodiment, the system further comprises a liquid storage tank 7, a four-way valve 6 and a water tank 8, wherein a first path of the four-way valve 6 is connected to an outlet of the concentrating PV/T heat exchanger 1, a second path thereof is connected to an inlet of the compressor 3, a third path thereof is respectively connected to an inlet of the air heat exchanger 4 and a working medium flow channel of the water tank 8, and a fourth path thereof is connected to the liquid storage tank 7; wherein, a working medium flow passage of the water tank 8 is connected into an inlet of the light-gathering PV/T heat exchanger 1 through a throttle valve 5, and meanwhile, another closed loop is formed among the compressor 3, the four-way valve 6 and the liquid storage tank 7.
In this embodiment, the heat pump operation method of the concentrating PV/T heat pump system includes a dual heat source heating mode, a solar heating mode, an air source heating mode, and an air source cooling mode, and in order to illustrate the operation process of each operation mode in the concentrating PV/T heat pump system described above, the present embodiment further provides a specific example.
Example 1: referring to fig. 3 in combination with fig. 2, when the solar irradiation condition of the concentrating PV/T heat pump system meets the desired target condition of solar irradiation and the ambient temperature meets the desired target condition of ambient temperature, the concentrating PV/T heat pump system adopts a dual-heat-source heating mode, and the operation process includes:
the light-concentrating PV/T heat exchanger 1 is used as an evaporator, and the air heat exchanger 4 or the water tank 8 is used as a condenser; the evaporation temperature of the light-concentrating PV/T heat exchanger 1 is lower than the ambient temperature, and forced convection is adopted between the light-concentrating PV/T heat exchanger and the environment; when flowing through the microchannel heat exchange unit 1d, the refrigeration working medium absorbs heat energy of the back of the photovoltaic module 1b (through the heat absorbing plate 1c) and heat energy of air (through the air heat exchange unit 1e) at the same time, the refrigeration working medium in the working medium flow channel is heated by the heat energy and evaporated from a liquid state to a gas state, then enters the compressor 3, is compressed into high-temperature high-pressure steam in the compressor 3, and then enters the condenser to be condensed into liquid; the condensed refrigeration working medium is throttled by an electronic expansion valve, the pressure and the temperature are reduced, and the condensed refrigeration working medium enters the light-concentrating PV/T heat exchanger 1 again to perform the heat pump evaporation and condensation cycle of the next period.
The light-concentrating PV/T heat pump system can be widely applied to the fields of building heating, hot water supply, industrial and agricultural drying and the like, and has strong practicability; and the light-concentrating PV/T heat pump system can solve the problems of insufficient heat supply capacity, low solar energy utilization rate and the like of the conventional photovoltaic heat pump, and can realize heat supply by completely using clean energy.
Example 2: referring to fig. 4 in combination with fig. 2, when the ambient temperature does not meet the expected target condition of the ambient temperature, but the solar irradiation condition meets the expected target condition of the solar irradiation, the concentrating PV/T heat pump system adopts the solar heating mode, and the working process includes:
when the surface temperature of the air heat exchanger 4 is lower than 0 ℃ and lower than the dew point temperature of the air, the moisture in the air is easy to condense into frost on the surface of the air heat exchanger 4, so that the performance coefficient of the air heat exchanger is obviously reduced, and the normal operation of the heat pump can be continuously maintained by adopting a solar heating mode in the embodiment; when the solar water heater runs, the light-concentrating PV/T heat exchanger 1 serves as an evaporator, and the air heat exchanger 4 or the water tank 8 serves as a condenser; the evaporation pressure of the refrigeration working medium can be adjusted by adjusting the rotating speed of the compressor 3 or the opening degree of the electronic expansion valve, so that the evaporation temperature of the refrigeration working medium is adjusted, the evaporation temperature of the light-concentrating PV/T heat exchanger 1 is higher than the critical temperature of frosting, and the purpose of defrosting is achieved; the light-concentrating PV/T heat exchanger 1 adopts natural convection with the environment, a refrigeration working medium flows in the micro-channel heat exchange unit 1d, is evaporated from a liquid state into a gas state after absorbing the heat of the heat absorption plate 1c, then enters the compressor 3, is compressed into high-temperature high-pressure steam in the compressor 3, and then enters the condenser to be condensed into liquid; the condensed refrigeration working medium is throttled by an electronic expansion valve, the pressure and the temperature are reduced, and the condensed refrigeration working medium enters the light-concentrating PV/T heat exchanger 1 again to perform the heat pump evaporation and condensation cycle of the next period.
The light-concentrating PV/T heat pump system of the embodiment can solve the problem that the conventional air source heat pump frosts in a low-temperature and high-humidity environment, so that the heat pump can operate in a low-temperature environment, and the operation range of the heat pump is expanded.
Example 3: referring to fig. 5 in combination with fig. 2, when the solar irradiation condition does not meet the desired target condition of solar irradiation, but the ambient temperature meets the desired target condition of ambient temperature, the concentrating PV/T heat pump system adopts an air source heating mode, and the operation process includes:
the micro-channel heat exchange unit 1d in the light-concentrating PV/T heat exchanger 1 is connected with the air heat exchange unit 1e (fin type heat exchange structure) on the surface B, so that the contact area between the heat exchanger and air can be remarkably increased, and the heat exchange coefficient is further increased; when the heat pump system is at night or the solar irradiation is not good, but the temperature is higher, because the solar heat collector in the light-concentrating PV/T heat exchanger 1 has lower efficiency, even is zero, an air source heating mode is adopted at the moment, and the heat pump can be continuously maintained to operate; when the heat pump is in operation, the light-concentrating PV/T heat exchanger 1 serves as an evaporator, and the air heat exchanger 4 or the water tank 8 serves as a condenser; the evaporation pressure of the refrigeration working medium is adjusted by adjusting the rotating speed of the compressor 3 or the opening degree of the electronic expansion valve, the evaporation temperature of the refrigeration working medium is reduced, the evaporation temperature is lower than the ambient temperature, the light-concentrating PV/T heat exchanger 1 is in forced convection with the environment, the refrigeration working medium absorbs ambient heat in the micro-channel heat exchange unit 1d, evaporates from a liquid state to a gas state, then enters the compressor 3, is compressed into high-temperature and high-pressure steam in the compressor 3, and then enters the condenser to be condensed into liquid; the condensed refrigerant is throttled by an electronic expansion valve, the pressure and the temperature are reduced, and the condensed refrigerant enters the light-concentrating PV/T heat exchanger 1 again to perform the heat pump evaporation and condensation cycle of the next period.
The light-concentrating PV/T heat pump system of the embodiment can solve the problems that the conventional solar heat pump cannot heat at night and the operation efficiency is low when the solar radiation is poor, and can enable the heat pump system to continuously heat all day long.
Example 4: referring to fig. 6 in combination with fig. 2, when the concentrating PV/T heat pump system needs to be cooled, the concentrating PV/T heat pump system adopts an air source cooling mode, and the operation process includes:
a four-way valve 6 in the heat pump system is reversed, so that a refrigerant reversely flows in a pipeline, and a heat pump evaporation and condensation working circulation loop opposite to a heating mode is realized; the evaporation pressure of the refrigeration working medium is adjusted by adjusting the rotating speed of the compressor 3 or the opening degree of the electronic expansion valve, so that the evaporation temperature of the refrigeration working medium is adjusted; at the moment, the light-concentrating PV/T heat exchanger 1 is used as a condenser, and the air heat exchanger 4 is used as an evaporator;
the refrigeration working medium absorbs heat through the air heat exchanger 4 and the water tank 8, evaporates from a liquid state to a gas state, then enters the compressor 3, is compressed into high-temperature high-pressure steam in the compressor 3, then enters the light-concentrating PV/T heat exchanger 1, at the moment, the light-concentrating PV/T heat exchanger 1 is in forced convection with the environment, releases heat to the environment in the micro-channel heat exchange unit 1d, condenses from the gas state to the liquid state, the condensed refrigeration working medium is throttled through the electronic expansion valve, reduces the pressure and the temperature, and enters the air heat exchanger 4 again to perform the heat pump evaporation and condensation cycle of the next period.
The concentrating PV/T heat pump system provided by the embodiment of the application can operate in multiple modes, realizes two functions of refrigeration and heating, can work in different seasons, and enlarges the operation range of the heat pump system.
It is to be expressly noted that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this patent. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Accordingly, the present patent is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the patent), or those unrelated to enabling the patent).
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (10)
1. A concentrating PV/T heat exchanger is characterized by comprising a photovoltaic module connected into a storage battery and a concentrating unit located on the periphery of the photovoltaic module and extending upwards along the front side of the photovoltaic module, wherein the back side of the photovoltaic module is in heat conduction connection with the surface A of a microchannel heat exchange unit through a heat absorption plate, and the surface B of the microchannel heat exchange unit is in heat conduction connection with an air heat exchange unit; the micro-channel heat exchange unit is provided with a working medium flow channel for circulation of a refrigerating working medium, and the working medium flow channel is connected to an external heat pump system, so that the light-concentrating PV/T heat exchanger can be selectively used as an evaporator or a condenser.
2. The concentrating PV/T heat exchanger as claimed in claim 1, wherein in the heat pump cycle operation of the concentrating PV/T, when the heat pump is in heating mode, the concentrating PV/T heat exchanger acts as an evaporator, the microchannel heat exchange unit absorbs heat energy from the heat absorbing plate and/or the air heat exchange unit, and the heat energy heats the refrigerant in the refrigerant channel to evaporate the refrigerant; when the heat pump belongs to an air source refrigeration mode, the light-concentrating PV/T heat exchanger serves as a condenser and transfers heat to air through the air heat exchange unit to realize condensation heat release.
3. The concentrating PV/T heat exchanger of claim 1, wherein the photovoltaic module, the absorber plate, the microchannel heat exchange unit, and the air heat exchange unit are sequentially stacked in an up-down direction; the photovoltaic assembly is laminated into a whole through a laminating process, and the heat absorbing plate is respectively bonded with the back of the photovoltaic assembly and the surface A of the micro-channel heat exchange unit into a whole in a heat conducting mode.
4. The concentrating PV/T heat exchanger of claim 1, wherein the photovoltaic module comprises a plurality of photovoltaic cells encapsulated and protected by an encapsulant layer, wherein light-transmissive gaps are formed between adjacent photovoltaic cells; the heat absorption plate is made of aluminum plates, the micro-channel heat exchange unit comprises aluminum micro-channel tubes which are arranged in the horizontal direction, and the inside of each aluminum micro-channel tube is used as a working medium flow channel for circulation of a refrigeration working medium.
5. The concentrating PV/T heat exchanger as claimed in claim 1, wherein the air heat exchange unit is of a fin type heat exchange structure and is fixedly mounted and connected with the surface B of the microchannel heat exchange unit as a whole by welding.
6. The concentrating PV/T heat exchanger of claim 1 wherein the concentrating unit is a compound parabolic concentrator extending upwardly and outwardly from the front face of the photovoltaic module, and wherein the inner peripheral reflective surface of the compound parabolic concentrator is an arcuate mirrored surface.
7. A concentrating PV/T heat pump system comprising the concentrating PV/T heat exchanger of any of claims 1-6, a compressor, an air heat exchanger, and a throttle valve, wherein a heat pump evaporative condensation duty cycle is formed between the concentrating PV/T heat exchanger, the compressor, the air heat exchanger, and the throttle valve.
8. The concentrating PV/T heat pump system according to claim 7 further comprising a liquid storage tank, a four-way valve and a water tank, wherein a first path of the four-way valve is connected to the outlet of the concentrating PV/T heat exchanger, a second path thereof is connected to the inlet of the compressor, a third path thereof is connected to the inlet of the air heat exchanger and the working fluid channel of the water tank, respectively, and a fourth path thereof is connected to the liquid storage tank; and a working medium flow passage of the water tank is connected to an inlet of the light-concentrating PV/T heat exchanger through the throttle valve, and meanwhile, another closed loop is formed among the compressor, the four-way valve and the liquid storage tank.
9. A heat pump operation method of a concentrating PV/T heat pump system, characterized in that the concentrating PV/T heat pump system according to claim 7 or 8 is used; comprises a double-heat-source heating mode, a solar heating mode, an air-source heating mode and an air-source cooling mode, wherein,
the dual heat source heating mode includes: when the solar irradiation condition of the light-concentrating PV/T heat pump system meets the expected target condition of solar irradiation and the ambient temperature meets the expected target condition of ambient temperature, the light-concentrating PV/T heat exchanger is used as an evaporator, the air heat exchanger or the water tank is used as a condenser, and the micro-channel heat exchange unit absorbs heat energy from the heat absorption plate and the air heat exchange unit;
the solar heating mode includes: when the ambient temperature does not meet the expected target condition of the ambient temperature but the solar irradiation condition meets the expected target condition of solar irradiation, the light-concentrating PV/T heat exchanger is used as an evaporator, the air heat exchanger or the water tank is used as a condenser, and the microchannel heat exchange unit only absorbs heat energy from the heat absorption plate;
the air source heating mode comprises: when the solar irradiation condition does not meet the expected target condition of solar irradiation, but the ambient temperature meets the expected target condition of the ambient temperature, the light-concentrating PV/T heat exchanger is used as an evaporator, the air heat exchanger or the water tank is used as a condenser, and the micro-channel heat exchange unit only absorbs heat energy from the air heat exchange unit;
the air source cooling mode includes: when the light-concentrating PV/T heat pump system needs to refrigerate, a heat pump evaporation and condensation working circulation loop which is opposite to a heating mode is adopted for refrigerating working media, the light-concentrating PV/T heat exchanger is used as a condenser, and the air heat exchanger is used as an evaporator.
10. The method of operating a heat pump according to claim 9, wherein in the dual-heat-source heating mode and or the air-source heating mode, the evaporating temperature of the concentrating PV/T heat pump system is below ambient temperature, using forced convection with the environment; in the solar heating mode, when the surface temperature of the air heat exchanger is lower than 0 ℃ and lower than the dew point temperature of air, the evaporation temperature of the light-concentrating PV/T heat pump system is higher than the critical temperature of frosting, so that the aim of defrosting is fulfilled; in the air source refrigeration mode, the light-concentrating PV/T heat pump system is in forced convection with the environment, and the refrigeration working medium in the micro-channel heat exchange unit releases heat to the environment and condenses the gas state into a liquid state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210628868.0A CN115031436A (en) | 2022-06-06 | 2022-06-06 | Light-concentrating PV/T heat exchanger, light-concentrating PV/T heat pump system and heat pump operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210628868.0A CN115031436A (en) | 2022-06-06 | 2022-06-06 | Light-concentrating PV/T heat exchanger, light-concentrating PV/T heat pump system and heat pump operation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115031436A true CN115031436A (en) | 2022-09-09 |
Family
ID=83123299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210628868.0A Pending CN115031436A (en) | 2022-06-06 | 2022-06-06 | Light-concentrating PV/T heat exchanger, light-concentrating PV/T heat pump system and heat pump operation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115031436A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4144931A (en) * | 1976-08-23 | 1979-03-20 | Medico Jr John J | Solar heating and cooling collector window |
| US4226604A (en) * | 1979-05-14 | 1980-10-07 | Solar Specialties, Inc. | Method and apparatus for preventing overheating of the superheated vapors in a solar heating system using a refrigerant |
| JPH0566065A (en) * | 1991-09-05 | 1993-03-19 | Matsushita Electric Ind Co Ltd | Solar heat pump room heater/cooler hot water supplying apparatus |
| CN105318396A (en) * | 2015-11-20 | 2016-02-10 | 北京工业大学 | Solar energy, air source and low-freezing-point energy storage solution tower three heat source frostless heat pump system |
| CN107062637A (en) * | 2017-04-17 | 2017-08-18 | 东北电力大学 | A kind of finned tube exchanger with solar heat collection function |
| CN107401855A (en) * | 2017-08-03 | 2017-11-28 | 大连理工大学 | A kind of PVT heat pumps that timesharing thermoelectricity cold supply round the clock is realized using solar radiation and sky cold emission |
-
2022
- 2022-06-06 CN CN202210628868.0A patent/CN115031436A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4144931A (en) * | 1976-08-23 | 1979-03-20 | Medico Jr John J | Solar heating and cooling collector window |
| US4226604A (en) * | 1979-05-14 | 1980-10-07 | Solar Specialties, Inc. | Method and apparatus for preventing overheating of the superheated vapors in a solar heating system using a refrigerant |
| JPH0566065A (en) * | 1991-09-05 | 1993-03-19 | Matsushita Electric Ind Co Ltd | Solar heat pump room heater/cooler hot water supplying apparatus |
| CN105318396A (en) * | 2015-11-20 | 2016-02-10 | 北京工业大学 | Solar energy, air source and low-freezing-point energy storage solution tower three heat source frostless heat pump system |
| CN107062637A (en) * | 2017-04-17 | 2017-08-18 | 东北电力大学 | A kind of finned tube exchanger with solar heat collection function |
| CN107401855A (en) * | 2017-08-03 | 2017-11-28 | 大连理工大学 | A kind of PVT heat pumps that timesharing thermoelectricity cold supply round the clock is realized using solar radiation and sky cold emission |
Non-Patent Citations (1)
| Title |
|---|
| 沈阳远大铝业工程有限公司研究院: "现代建筑外皮——走向"智慧皮肤"", 辽宁科学技术出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Vaishak et al. | Photovoltaic/thermal-solar assisted heat pump system: Current status and future prospects | |
| WO2019024061A1 (en) | Pvt heat pump system capable of realizing divided daytime and night-time heat, power and cooling supply by means of solar radiation and sky cold radiation | |
| CN100453926C (en) | Multifunctional integrative system of light-volt solar heat pump | |
| US20180031285A1 (en) | Thermoelectric heat pump system | |
| US20160036378A1 (en) | Hybrid photovoltatic and photo-thermal solar panel | |
| CN210154106U (en) | Heat pipe photovoltaic photo-thermal system based on double condensers | |
| US20110314856A1 (en) | Low-pressure high-efficiency aqua ammonia absorption heat pump system for BCHP residential use | |
| CN111306814B (en) | Multifunctional double-cold condenser heat pipe photovoltaic photo-thermal system and method | |
| CN110068038B (en) | Solar energy or air energy combined heat and power system and method thereof | |
| CN211782035U (en) | Multifunctional double-cold condenser heat pipe photovoltaic photo-thermal system | |
| CN102563973B (en) | Novel solar air source heat pump system and hot water production method | |
| CN112013451A (en) | Solar photovoltaic photo-thermal coupling double-cold heat exchanger heat pump system and working method | |
| CN202648245U (en) | Novel solar energy air source heat pump system | |
| CN111750418A (en) | Heat pipe type photovoltaic photo-thermal module-heat pump-phase change material coupling system and method | |
| CN111564512A (en) | Solar photovoltaic module operating at low temperature | |
| CN105783086A (en) | Solar heat pump system with micro-channel flat plate loop heat pipe | |
| CN212961846U (en) | Heat pipe type photovoltaic photo-thermal module-heat pump-phase change material coupling system | |
| CN115031436A (en) | Light-concentrating PV/T heat exchanger, light-concentrating PV/T heat pump system and heat pump operation method thereof | |
| CN216522499U (en) | Solar tile plate or wallboard evaporator for air conditioning system | |
| CN112856831B (en) | Multifunctional heat pipe type photovoltaic photo-thermal high-low temperature phase change floor coupling system and method | |
| CN213656920U (en) | Heat pipe type photovoltaic photo-thermal module-heat pump-phase change floor coupling system | |
| CN211650599U (en) | Building energy comprehensive utilization system based on all-weather radiation cooling | |
| KR20200111615A (en) | Hybrid system for sunlight generation and heat pump | |
| CN220648695U (en) | Combined cooling heating power system based on PV/E and air energy | |
| CN111750417A (en) | Heat pipe type photovoltaic photo-thermal module-heat pump-phase change floor coupling system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |