CN110715460A - Photovoltaic and photo-thermal integrated device capable of radiating and refrigerating at night - Google Patents
Photovoltaic and photo-thermal integrated device capable of radiating and refrigerating at night Download PDFInfo
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- CN110715460A CN110715460A CN201911049539.5A CN201911049539A CN110715460A CN 110715460 A CN110715460 A CN 110715460A CN 201911049539 A CN201911049539 A CN 201911049539A CN 110715460 A CN110715460 A CN 110715460A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- 230000005855 radiation Effects 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 56
- 238000005057 refrigeration Methods 0.000 claims description 11
- 239000012528 membrane Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 239000004831 Hot glue Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000000694 effects Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 239000010408 film Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/50—Solar heat collectors using working fluids the working fluids being conveyed between plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/60—Thermal insulation
-
- 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
- H02S40/40—Thermal components
- H02S40/42—Cooling means
-
- 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
- H02S40/40—Thermal components
- H02S40/44—Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
-
- 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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- 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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
-
- 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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
-
- 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
- Y02E10/50—Photovoltaic [PV] energy
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a photovoltaic photo-thermal integrated device capable of radiating and refrigerating at night, relates to the technical field of solar photovoltaic photo-thermal comprehensive utilization, and solves the technical problems that photovoltaic photo-thermal equipment and radiation refrigerating equipment in the prior art occupy a large area of a building roof and are low in roof utilization rate. The photovoltaic photo-thermal integrated device capable of radiating and refrigerating at night comprises a box body, an energy conversion assembly and a heat exchange assembly; wherein the energy conversion assembly is arranged inside or on the top of the box body; the heat exchange assembly is arranged in the box body and comprises a gas channel and a heat collecting plate, and the gas channel is arranged between the energy conversion assembly and the heat collecting plate. The photovoltaic and photo-thermal integrated device capable of radiating and refrigerating at night can improve the utilization rate of the roof of a building, has good heat preservation performance and firm structure.
Description
Technical Field
The invention relates to the technical field of solar photovoltaic photo-thermal comprehensive utilization, in particular to a photovoltaic photo-thermal integrated device capable of radiating and refrigerating at night.
Background
Solar photovoltaic is a technology for directly converting light energy into electric energy by utilizing a photovoltaic effect generated by a semiconductor interface, and a key element of the solar photovoltaic is a solar cell; solar photo-thermal uses solar energy to generate heat to heat working media and the like. At present, in order to improve the utilization rate of energy, a solar photovoltaic photo-thermal comprehensive utilization technology (PT/V) is developed at the end of the process, and on one hand, a photovoltaic photo-thermal integrated device can convert solar energy into electric energy, and on the other hand, can absorb heat generated by the solar energy to heat a working medium. Radiation refrigeration refers to a refrigeration mode of completely releasing heat to the space in a radiation mode, and radiation refrigeration equipment adopts a radiation refrigeration principle, is a building air conditioning means without energy consumption and pollution, and greatly saves energy.
The applicant finds that the photovoltaic and photothermal integrated equipment can only work in the daytime and enter an idle state at night, while the radiation refrigeration equipment can only work at night and enter an idle state at daytime; if the two are arranged on the roof of the building at the same time, the occupied area is large, and the utilization rate of the roof is low.
Disclosure of Invention
The invention aims to provide a photovoltaic and photo-thermal integrated device capable of radiating and refrigerating at night, and aims to solve the technical problems that photovoltaic and photo-thermal equipment and radiation refrigerating equipment in the prior art occupy a large roof area of a building and are low in roof utilization rate. The technical effects that can be produced by the preferred technical scheme in the technical schemes of the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a photovoltaic and photo-thermal integrated device capable of radiating and refrigerating at night, which comprises a box body, an energy conversion assembly and a heat exchange assembly, wherein the box body is provided with a box body; wherein the content of the first and second substances,
the energy conversion assembly is arranged inside or at the top of the box body; the heat exchange assembly is arranged in the box body and comprises a gas channel and a heat collecting plate, and the gas channel is arranged between the energy conversion assembly and the heat collecting plate.
In a preferred or alternative embodiment, the top of the box body is open, and the energy conversion assembly is arranged at the top of the box body.
In a preferred or alternative embodiment, the energy conversion assembly includes a selectively permeable membrane and a photovoltaic cell coupled to a lower surface of the selectively permeable membrane.
In a preferred or alternative embodiment, the photovoltaic cell and the permselective membrane are connected by a hot melt adhesive.
In a preferred or alternative embodiment, the space surrounded by the energy conversion assembly, the heat collection plate and the wall surface of the box body forms the gas channel, the box body is provided with a gas inlet and a gas outlet, and the gas inlet and the gas outlet are both communicated with the gas channel.
In a preferred or alternative embodiment, said heat exchange assembly further comprises a fluid passage, said fluid passage outer wall surface being connected to said heat collecting plate surface.
In a preferred or alternative embodiment, the fluid passage comprises at least two flow tubes, at least a section of the outer wall surface of each flow tube being a plane, where the flow tubes are connected to the surface of the heat collecting plate.
In a preferred or alternative embodiment, the liquid passage is connected with the heat collecting plate through hot melt adhesive.
In a preferred or alternative embodiment, the liquid channel further comprises two liquid collecting pipes, and two ends of each flow pipe are respectively communicated with one liquid collecting pipe; one end of one of the liquid collecting pipes extends out of the box body to form a liquid inlet, and one end of the other liquid collecting pipe extends out of the box body to form a liquid outlet.
In a preferred or optional embodiment, the photovoltaic, thermal and energy integrated device capable of radiating and refrigerating at night further comprises a heat insulation layer, and the heat insulation layer is filled in a space surrounded by the heat collection plate and the wall surface of the box body and covers the liquid channel.
Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:
the photovoltaic and photo-thermal integrated device capable of radiating and refrigerating at night comprises a box body, an energy conversion assembly and a heat exchange assembly, wherein the energy conversion assembly is arranged in the box body or at the top of the box body and can convert part of solar radiation energy into electric energy to be output; the heat exchange assembly comprises a gas channel and a heat collecting plate, the heat collecting plate absorbs the heat of the sun to heat the gas in the gas channel in the daytime, the hot air in the gas channel transfers the heat to the heat collecting plate and the photovoltaic cell at night, the heat collecting plate and the photovoltaic cell radiate the heat to the atmosphere and the outer space in a radiation refrigeration mode, the gas in the gas channel is cooled, and the device integrates multiple functions of energy conversion, heating and refrigeration, so that the utilization rate of the roof of a building is improved; the gas channel is arranged between the energy conversion assembly and the heat collecting plate, so that a greenhouse effect can be formed in the gas channel, the heat of the heat collecting plate is prevented from being dissipated to the surrounding environment through convection and radiation after the temperature of the heat collecting plate is increased, the heat insulation performance of the device is improved, and the heat loss is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a photovoltaic and photothermal integrated device capable of radiant cooling at night provided by the invention;
fig. 2 is a cross-sectional view of the integrated photovoltaic and thermal device capable of radiant cooling at night shown in fig. 1.
In the figure, 1, a box body; 2. an energy conversion assembly; 21. a selectively permeable membrane; 22. a photovoltaic cell; 3. a heat exchange assembly; 31. a gas channel; 32. a heat collecting plate; 33. a liquid channel; 331. a flow-through tube; 332. a liquid collecting pipe; 333. a liquid inlet; 334. a liquid outlet; 4. an air inlet; 5. an air outlet; 6. and (7) an insulating layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The photovoltaic and photo-thermal integrated device capable of radiating and refrigerating at night can improve the utilization rate of the roof of a building and has better heat preservation performance.
The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 2.
As shown in fig. 1 to 2, the photovoltaic and photothermal integrated device capable of radiating and refrigerating at night provided by the invention comprises a box body 1, an energy conversion assembly 2 and a heat exchange assembly 3; wherein the content of the first and second substances,
the energy conversion assembly 2 is arranged inside or at the top of the box body 1; the heat exchange assembly 3 is disposed within the case 1, the heat exchange assembly 3 includes a gas passage 31 and a heat collecting plate 32, and the gas passage 31 is disposed between the energy conversion assembly 2 and the heat collecting plate 32.
The photovoltaic and photo-thermal integrated device capable of radiating and refrigerating at night comprises a box body 1, an energy conversion assembly 2 and a heat exchange assembly 3, wherein the energy conversion assembly 2 is arranged in the box body 1 or the top of the box body 1 and can convert part of solar radiation energy into electric energy to be output; the heat exchange assembly 3 comprises a gas passage 31 and a heat collecting plate 32, in the daytime, the heat collecting plate 32 absorbs the heat of the sun to heat the gas in the gas passage 31, at night, the hot air in the gas passage 31 transfers the heat to the heat collecting plate 32 and the photovoltaic cell 22, the heat collecting plate 32 and the photovoltaic cell 22 radiate the heat to the atmosphere and the outer space in a radiation refrigeration mode, the gas in the gas passage 31 is cooled, and the device integrates multiple functions of energy conversion, heating and refrigeration, thereby improving the utilization rate of the roof of the building; the gas passage 31 is disposed between the heat collecting plates 32 of the energy conversion assembly 2, and a greenhouse effect is formed in the gas passage 31, preventing the heat collecting plates 32 from radiating to the surrounding environment through convection and radiation after the temperature is increased, improving the heat insulating performance of the device, and reducing heat loss.
In a preferred or alternative embodiment, the cabinet 1 is open at the top, and the energy conversion assembly 2 is disposed at the open top of the cabinet 1.
Specifically, the energy conversion assembly 2 covers the opening at the top of the box body 1, so that the thickness of the device can be reduced, and the weight and the volume of the device can be reduced.
In a preferred or alternative embodiment, the energy conversion module 2 comprises a permselective membrane 21 and photovoltaic cells 22, the photovoltaic cells 22 being connected to the lower surface of the permselective membrane 21.
Specifically, the transmittances of the selective transmission film 21 in a solar radiation waveband of 0.2-3 μm and an atmospheric window waveband of 8-13 μm are 85% -90%; the photovoltaic cells 22 may be single crystalline silicon solar cells, polycrystalline silicon solar cells, thin film solar cells, or other high efficiency solar cells, among others. The photovoltaic cell 22 is tightly attached to the selective transmission film 21, so that solar radiation can directly reach the photovoltaic cell 22 through the selective transmission film 21, energy loss is reduced, the utilization efficiency of radiant energy is improved, and the power generation efficiency of the device is improved.
In a preferred or alternative embodiment, the photovoltaic cells 22 are connected to the permselective membrane 21 by hot melt adhesives.
Specifically, the photovoltaic cells 22 are encapsulated up and down by the TPT layer, then connected with the selectively permeable film 21 by hot melt adhesive, and finally encapsulated in the frame of the cabinet 1.
In a preferred or alternative embodiment, the space surrounded by the energy conversion assembly 2, the heat collecting plate 32 and the wall surface of the box body 1 forms an air passage 31, the box body 1 is provided with an air inlet 4 and an air outlet 5, and the air inlet 4 and the air outlet 5 are both communicated with the air passage 31.
Specifically, the heat collecting plate 32 may be an aluminum plate, and the space surrounded by the energy conversion assembly 2, the heat collecting plate 32 and the wall surface of the tank 1 forms the gas channel 31, so that heat exchange between heat on the heat collecting plate 32 and the gas channel 31 can be directly realized, and the heat exchange efficiency is high; the two ends of the gas channel 31 are respectively communicated with the gas inlet 4 and the gas outlet 5, so that gas enters the gas channel 31 from the gas inlet 4, realizes heat exchange in the gas channel and then flows out from the gas outlet 5.
In a preferred or alternative embodiment, the heat exchange assembly 3 further comprises a fluid passage 33, and the outer wall surface of the fluid passage 33 is connected with the surface of the heat collecting plate 32.
Specifically, the liquid passage 33 may be filled with a liquid to be cooled or heated, such as water or cooling liquid, and the outer wall surface of the liquid passage 33 is connected to the surface of the heat collecting plate 32, so that the heat collecting plate 32 and the liquid passage 33 can directly exchange heat, thereby improving the heat exchange efficiency.
In a preferred or alternative embodiment, the fluid passage 33 comprises at least two flow tubes 331, at least a portion of the outer wall surface of each flow tube 331 is a plane, and the plane of the flow tube 331 is connected to the surface of the heat collecting plate 32.
Specifically, the liquid passage 33 may be a plurality of flow tubes 331 arranged in a fine-grained manner, the flow tubes 331 may be flat tubes, the upper and lower surfaces of the flow tubes 331 are flat surfaces, and the flat surfaces of the flow tubes 331 are located on the surface of the heat collecting plate 32 and connected to each other, so that the two are connected in a surface contact manner, the connection is firmer, and the surface contact increases the heat exchange contact area, thereby further enhancing the heat transfer; the equivalent diameter of the flow-through tube 331 is between 10 μm and 1000 μm.
In a preferred or alternative embodiment, the liquid passage 33 is connected to the heat collecting plate 32 by means of hot melt glue.
In a preferred or alternative embodiment, the liquid channel 33 further includes two liquid collecting tubes 332, and both ends of each flow tube 331 are respectively communicated with one liquid collecting tube 332; one end of one of the header pipes 332 extends out of the tank 1 to form an inlet 333, and one end of the other header pipe 332 extends out of the tank 1 to form an outlet 334.
Specifically, the liquid to be heated or cooled flows into each flow tube 331 after being introduced from the liquid inlet 333, exchanges heat with the heat collecting plate 32 in the flow tube 331, and the liquid after heat exchange flows into the liquid collecting tube 332 from each flow tube 331 and flows out from the liquid outlet 334.
In a preferred or alternative embodiment, the photovoltaic, thermal and energy integrated device capable of radiant cooling at night further comprises an insulating layer 6, and the insulating layer 6 is filled in a space enclosed by the heat collecting plate 32 and the wall surface of the box body 1 and covers the liquid channel 33.
Specifically, the insulating layer 6 may be phenolic foam, rock wool, glass wool, or slag wool, or the like. The heat insulation layer 6 is provided to reduce heat exchange between the circulation pipe 331 and the outside, and only exchanges heat with the heat collecting plate 32, thereby improving heat exchange efficiency of the apparatus.
The use method of the photovoltaic photo-thermal integrated device capable of radiating and refrigerating at night provided by the invention comprises the following steps:
in the daytime hot water preparation mode, the liquid inlet 333 and the liquid outlet 334 are opened, and the air inlet 4 and the air outlet 5 are closed. Cold water enters the liquid channel 33 from the liquid inlet 333 to absorb heat obtained by the heat collecting plate 32 from solar radiation energy, and heated hot water flows out of the liquid outlet 334 to enter a device or place to be provided with hot water; meanwhile, the photovoltaic cell 22 converts a part of solar radiation energy into electric energy to be output.
In the daytime hot air mode, the liquid inlet 333 and the liquid outlet 334 are closed, and the air inlet 4 and the air outlet 5 are opened. Cold air enters the air channel 31 from the air inlet 4 to absorb heat from solar energy, and heated hot air flows out from the air outlet 5 and is sent to a device or a place needing hot air; at the same time, the photovoltaic cells 22 convert a portion of the solar radiation into electrical energy for output.
In the cold water preparation mode at night, the liquid inlet 333 and the liquid outlet 334 are opened, and the air inlet 4 and the air outlet 5 are closed. Hot water enters the liquid passage 33 from the liquid inlet 333 to transfer heat to the heat collecting plate 32, and cooled cold water flows out from the liquid outlet 334 to enter a device or a place to be provided with cold water, and the heat collecting plate 32 and the photovoltaic cell 22 transfer heat to the atmosphere and outer space.
In the mode of producing cold air at night, the liquid inlet 333 and the liquid outlet 334 are closed, and the air inlet 4 and the air outlet 5 are opened. The hot air enters the gas channel 31 from the air inlet 4 to transfer heat to the heat collecting plate 32 and the photovoltaic cell 22, the cooled cold air flows out from the air outlet 5 and is sent to a device or a place needing the cold air, and the heat collecting plate 32 and the photovoltaic cell 22 transfer the heat to the atmosphere and the outer space.
When hot air or hot water is prepared, the liquid inlet 333, the liquid outlet 334, the air inlet 4 and the air outlet 5 can be opened simultaneously, so that air and water can be heated simultaneously, but the total heat quantity can be dispersed, the heating effect of the water and the air can be influenced, and therefore, single heating water or single heating air is preferred; likewise, a single chilled water or a single chilled air is preferred.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connection (such as riveting and welding), of course, the mutual fixed connection can also be an integral structure (for example, the mutual fixed connection is manufactured by casting and integral forming instead (except that the integral forming process can not be adopted obviously).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated. Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. A photovoltaic and photo-thermal integrated device capable of radiating and refrigerating at night is characterized by comprising a box body, an energy conversion assembly and a heat exchange assembly; wherein the content of the first and second substances,
the energy conversion assembly is arranged inside or at the top of the box body; the heat exchange assembly is arranged in the box body and comprises a gas channel and a heat collecting plate, and the gas channel is arranged between the energy conversion assembly and the heat collecting plate.
2. The photovoltaic and photothermal integrated device capable of radiant cooling at night according to claim 1, wherein the top of the box body is open, and the energy conversion assembly is arranged at the top of the box body.
3. The integrated photovoltaic-thermal device capable of radiant cooling at night as claimed in claim 1, wherein the energy conversion module comprises a permselective membrane and a photovoltaic cell attached to a lower surface of the permselective membrane.
4. The integrated photovoltaic-thermal device capable of radiant cooling at night as claimed in claim 3, wherein the photovoltaic cell and the permselective membrane are connected by hot melt adhesive.
5. The photovoltaic, photothermal and integrated device capable of radiant cooling at night as claimed in claim 1, wherein the space surrounded by the energy conversion module, the heat collection plate and the wall surface of the box body forms the gas channel, the box body is provided with a gas inlet and a gas outlet, and both the gas inlet and the gas outlet are communicated with the gas channel.
6. The integrated photovoltaic and photothermal device capable of radiant cooling at night as claimed in claim 1, wherein said heat exchange module further comprises a liquid passage, and an outer wall surface of said liquid passage is connected to a surface of said heat collecting plate.
7. The PV-photothermal integrated device capable of night radiation refrigeration of claim 6, wherein said liquid passage comprises at least two flow tubes, at least a portion of the outer wall surface of each of said flow tubes is a flat surface, and said flat surface of said flow tube is connected to the surface of said heat collecting plate.
8. The photovoltaic, thermal and integrated device capable of achieving radiation refrigeration at night according to claim 7, wherein the liquid channel and the heat collection plate are connected through a hot melt adhesive.
9. The photovoltaic, photothermal and integrative device capable of radiant cooling at night as claimed in claim 7, wherein said liquid channel further comprises two liquid collecting tubes, and both ends of each of said flow tubes are respectively communicated with one of said liquid collecting tubes; one end of one of the liquid collecting pipes extends out of the box body to form a liquid inlet, and one end of the other liquid collecting pipe extends out of the box body to form a liquid outlet.
10. The integrated photovoltaic-thermal device capable of radiating and refrigerating at night according to claim 6, further comprising a thermal insulation layer, wherein the thermal insulation layer is filled in a space surrounded by the heat collecting plate and the wall surface of the box body and covers the liquid channel.
Priority Applications (1)
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