CN116054734A - Photovoltaic thermoelectric system based on solar energy and radiation refrigeration - Google Patents
Photovoltaic thermoelectric system based on solar energy and radiation refrigeration Download PDFInfo
- Publication number
- CN116054734A CN116054734A CN202211548377.1A CN202211548377A CN116054734A CN 116054734 A CN116054734 A CN 116054734A CN 202211548377 A CN202211548377 A CN 202211548377A CN 116054734 A CN116054734 A CN 116054734A
- Authority
- CN
- China
- Prior art keywords
- thermoelectric
- film
- photovoltaic
- power generation
- radiation
- 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
- 230000005855 radiation Effects 0.000 title claims abstract description 75
- 238000005057 refrigeration Methods 0.000 title claims abstract description 65
- 238000010248 power generation Methods 0.000 claims abstract description 62
- 238000009825 accumulation Methods 0.000 claims abstract description 5
- 238000007747 plating Methods 0.000 claims abstract description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 18
- 239000004065 semiconductor Substances 0.000 claims description 18
- 239000011550 stock solution Substances 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 12
- 239000000741 silica gel Substances 0.000 claims description 11
- 229910002027 silica gel Inorganic materials 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- 238000002834 transmittance Methods 0.000 claims description 9
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 7
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000000071 blow moulding Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- -1 polydimethylsiloxane Polymers 0.000 claims description 5
- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 claims description 4
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 238000003490 calendering Methods 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 238000010345 tape casting Methods 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 abstract description 28
- 230000008021 deposition Effects 0.000 abstract description 6
- 239000010408 film Substances 0.000 description 50
- 238000001816 cooling Methods 0.000 description 15
- 230000005678 Seebeck effect Effects 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000007888 film coating Substances 0.000 description 4
- 238000009501 film coating Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012782 phase change material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005676 thermoelectric effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
-
- 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
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a photovoltaic thermoelectric system based on solar energy and radiation refrigeration, which is applied to the technical field of new energy, can effectively relieve the problem of heat deposition of a photovoltaic cell and improves the output efficiency and the spectrum utilization rate of the system. The system comprises: the photovoltaic power generation plate is used for carrying out photovoltaic power generation; the film-coated short-wave lens is arranged above the photovoltaic power generation plate and is used for heat accumulation; the thermoelectric generation piece comprises a thermoelectric generation piece hot end and a thermoelectric generation piece cold end, and the thermoelectric generation piece hot end is connected with the film-coated shortwave lens; the radiation refrigerating device is arranged above the film plating short wave lens, and is connected with the cold end of the thermoelectric generation sheet, and a radiation refrigerating film is arranged on the upper surface of the radiation refrigerating device.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a photovoltaic thermoelectric system based on solar energy and radiation refrigeration.
Background
Solar energy is a clean energy source which can be continuously utilized as a renewable energy source which is ideal at present. Solar photovoltaic power generation is an important form of solar energy utilization, and is a power generation form for directly converting solar radiation energy into electric energy by utilizing the photovoltaic effect principle of a solar cell. From the energy and environmental point of view, solar photovoltaic power generation belongs to clean renewable energy sources without pollution. However, in the related art, the system structure of the thermoelectric photovoltaic management is complex, and all the energy irradiated by the solar spectrum cannot be converted into electric energy, so that the photovoltaic cell is deposited with heat, the spectrum utilization rate is low, and the performance of the photovoltaic cell is reduced.
Disclosure of Invention
In order to solve at least one of the technical problems, the invention provides a photovoltaic thermoelectric system based on solar energy and radiation refrigeration, which can effectively relieve the problem of heat deposition of a photovoltaic cell and improve the output efficiency and the spectrum utilization rate of the system.
In one aspect, embodiments of the present invention provide a photovoltaic thermoelectric system based on solar energy and radiation refrigeration, the system comprising:
the photovoltaic power generation plate is used for carrying out photovoltaic power generation;
the film-coated short-wave lens is arranged above the photovoltaic power generation plate and is used for heat accumulation;
the thermoelectric generation piece comprises a thermoelectric generation piece hot end and a thermoelectric generation piece cold end, and the thermoelectric generation piece hot end is connected with the film-coated shortwave lens;
the radiation refrigerating device is arranged above the film plating short wave lens, and is connected with the cold end of the thermoelectric generation sheet, and a radiation refrigerating film is arranged on the upper surface of the radiation refrigerating device.
According to the embodiment of the invention, the photovoltaic thermoelectric system based on solar energy and radiation refrigeration has at least the following beneficial effects: according to the embodiment, the film-coated short wave lens is arranged above the photovoltaic power generation plate, so that the spectrum of a part of wave bands is projected to the photovoltaic power generation plate to carry out photovoltaic power generation through the selective permeability of the film-coated short wave lens to the solar spectrum, and the spectrum of the rest part of wave bands is absorbed and converted into heat. Meanwhile, in the embodiment, the hot end of the thermoelectric generation sheet is connected with the coated short wave lens, and the heat accumulated by the coated short wave lens is used for heating the hot end of the thermoelectric generation sheet. In addition, the radiation refrigeration film on the upper surface of the radiation refrigeration device is used for radiating and cooling, and is connected with the cold end of the thermoelectric generation sheet through the radiation refrigeration device, so that the temperature of the cold end of the thermoelectric generation sheet is reduced, the hot end of the thermoelectric generation sheet and the cold end of the thermoelectric generation sheet form a temperature difference, and the thermoelectric generation sheet outputs power outwards. The embodiment effectively relieves the problem of heat deposition of the photovoltaic cell, improves the output efficiency of the system, optimizes the distribution and utilization of spectral energy, expands the utilization wave band of the solar spectrum and improves the utilization rate of the solar spectrum.
According to some embodiments of the invention, the light wave transmittance of the coated short wave lens in the range from 0.3 micron band to 0.9 micron band is greater than or equal to a preset transmittance.
According to some embodiments of the invention, the photovoltaic power generation panel comprises a gallium arsenide power generation panel or a cadmium telluride power generation panel.
According to some embodiments of the invention, the thermoelectric generation sheet is a semiconductor thermoelectric generation sheet.
According to some embodiments of the invention, the semiconductor thermoelectric generation sheet includes a P-type thermoelectric material and an N-type thermoelectric material.
According to some embodiments of the invention, the coated short wave lens is disposed above the photovoltaic panel, comprising:
the film-coated short wave lens is arranged above a preset distance away from the photovoltaic power generation plate.
According to some embodiments of the invention, the radiation-induced cooling film comprises a mixed material radiation-induced cooling film.
According to some embodiments of the invention, the radiation refrigeration film is made by the following method:
mixing a polydimethylsiloxane prepolymer, a curing agent, ethyl acetate and silicon dioxide, and heating and stirring to obtain a mixed solution;
adding a preset amount of zirconium dioxide into the mixed solution, and stirring to obtain a stock solution;
and preparing a film according to the stock solution to obtain the radiation refrigeration film.
According to some embodiments of the invention, the preparing a film from the stock solution, to obtain the radiation refrigeration film, includes:
preparing the stock solution into a film through preset operation to obtain the radiation refrigeration film; wherein the preset operation comprises any one mode of blow molding, calendaring, casting and knife coating.
According to some embodiments of the invention, the hot end of the thermoelectric generation sheet is connected with the coated short wave lens through a first heat conducting silica gel, and the radiation refrigeration device is connected with the cold end of the thermoelectric generation sheet through a second heat conducting silica gel.
Drawings
Fig. 1 is a schematic block diagram of a photovoltaic thermoelectric system based on solar energy and radiation refrigeration according to an embodiment of the present invention.
Detailed Description
The embodiments described in the present application should not be construed as limitations on the present application, but rather as many other embodiments as possible without inventive faculty to those skilled in the art, are intended to be within the scope of the present application.
In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with one another without conflict.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the present application.
Solar energy is a clean energy source which can be continuously utilized as a renewable energy source which is ideal at present. Solar photovoltaic power generation is an important form of solar energy utilization, and is a power generation form for directly converting solar radiation energy into electric energy by utilizing the photovoltaic effect principle of a solar cell. From the energy and environmental point of view, solar photovoltaic power generation belongs to clean renewable energy sources without pollution. Photovoltaic cells are an electrical device that converts solar energy into electrical energy, and have attracted considerable attention in recent years as a renewable energy source. However, the efficiency of a conventional PV cell (photovoltaic cell) is difficult to achieve in an ideal state because it can only convert a small portion of the spectrum into electrical energy, about 5% to 20%, while most solar energy is converted into thermal energy. Meanwhile, the conventional crystalline silicon solar cell will have an efficiency drop of 0.45% every one degree celsius increase in temperature. Photovoltaic cells are capable of absorbing about 80% of the solar spectral irradiance, but the remaining energy can dangerously raise the silicon junction temperature in the PV package, resulting in reduced performance. Currently, in the related art, the system structure of thermoelectric photovoltaic management is complex, for example, a complex heat exchange module such as a heat pipe, a heat insulation board, heat conducting silica gel and the like is required to be introduced for cooling the photovoltaic cell. And the photovoltaic cell technology can not convert all energy irradiated by solar spectrum into electric energy at present, so that the solar spectrum utilization rate is low. At the same time, the remaining energy that is not converted to electrical energy is converted to thermal energy, resulting in an increase in the junction temperature of the silicon in the PV package, leading to a decrease in the performance of the photovoltaic cell. Currently, the solar spectrum band available for photovoltaic cells is mainly in the 0.3 to 1.1 micron band, while the remaining infrared band of sunlight is the main factor responsible for heat deposition.
Based on the above, one embodiment of the invention provides a photovoltaic thermoelectric system based on solar energy and radiation refrigeration, which can effectively relieve the problem of heat deposition of a photovoltaic cell and improve the output efficiency and the spectrum utilization rate of the system. Referring to fig. 1, a photovoltaic thermoelectric system based on solar energy and radiation refrigeration provided in this embodiment includes: photovoltaic power generation plate 103, coating film shortwave lens 101, thermoelectric generation piece 104 and radiation refrigerating plant 102. Specifically, the photovoltaic power generation panel 103 is used for performing photovoltaic power generation. The coated short wave lens 101 is disposed above the photovoltaic power generation panel 103. The coated short wave lens 101 is used for heat accumulation in this embodiment. It is easy to understand that the coated short wave lens 101 in this embodiment has selective permeability. For the sunlight 105 impinging on the coated short wave lens 101, only a portion can reach the photovoltaic panel 103, i.e. the photovoltaic panel band 107, through the coated short wave lens 101. The sunlight in other wave bands cannot pass through the film-coated short-wave lens 101, and is absorbed and converted into heat energy through the material image of the film-coated short-wave lens 101, so that heat accumulation is realized. Meanwhile, the present embodiment is provided with thermoelectric generation pieces 104. Thermoelectric generation sheet 104 includes a thermoelectric generation sheet hot end and a thermoelectric generation sheet cold end. The thermoelectric generation piece hot end is connected with the film coating short wave lens 101, so that heat obtained by converting the film coating short wave lens 101 is transferred to the thermoelectric generation piece hot end in a heat conduction mode, and the thermoelectric generation piece hot end is heated. Meanwhile, the cold end of the thermoelectric generation sheet of the embodiment is connected with the radiation refrigeration device 102. The radiation refrigeration device 102 is arranged above the film-coated short-wave lens 101, and a radiation refrigeration film is arranged on the upper surface of the radiation refrigeration device 102. In the embodiment, the radiation refrigeration film reflects the radiation refrigeration wave band light wave 106 to the space, so that the cooling effect is realized. For example, the radiation refrigeration device 102 in this embodiment uses the radiation refrigeration principle to achieve the cooling effect by using the radiation reflection value space in the 0.8 to 1.3 micron wavelength band. Next, in this embodiment, the cold end of the thermoelectric generation sheet is connected to the radiant refrigeration device 102, so that the temperature of the cold end of the thermoelectric generation sheet is reduced. In this embodiment, the thermoelectric generation sheet 104 converts the temperature difference between the hot end of the thermoelectric generation sheet and the cold end of the thermoelectric generation sheet into electromotive force through seebeck effect, so as to output power to the outside.
Illustratively, the photovoltaic power generation panel 103 is supported and arranged above the ground surface by a bracket, and is used for receiving the spectrum wave band transmitted through the film-coated short wave lens 101 to perform photovoltaic power generation. Meanwhile, the coated short wave lens 101 is supported and arranged above the photovoltaic power generation plate 103 through a bracket. Sunlight is directly incident on the upper surface of the coated short wave lens 101. Wherein, the film-coated short wave lens has the characteristic of selectivity transmission: the spectrum band light beam which can be utilized by the photovoltaic power generation plate 103 is transmitted through the film-coated short-wave lens 101, and the rest bands are intercepted by the film-coated short-wave lens 101 until the mirror surface is absorbed. The photovoltaic power generation plate 103 is arranged right below the film coating short wave lens through the support, the photovoltaic power generation plate 103 can directly irradiate a photovoltaic power generation plate wave band 107 on the surface of the photovoltaic power generation plate 103 through the film coating short wave lens 101, and electron hole pairs generated inside the battery are excited to generate photovoltaic electromotive force, so that power is output outwards. Meanwhile, the unavailable wave band is absorbed by the coated short wave lens 101 and converted into heat energy. In addition, the hot end of the thermoelectric generation sheet is attached to the coated short wave lens 101, and the coated short wave lens 101 continuously absorbs sunlight in a spectral band which is not transmitted, so that the hot end of the thermoelectric generation sheet is heated. And the cold end of the thermoelectric generation sheet is attached to the radiation refrigeration device 102, and the radiation refrigeration device 102 radiates and emits the wave band of 0.8 to 1.3 microns to space by utilizing the radiation refrigeration principle, so that a certain cooling effect is achieved, and the temperature of the cold end of the thermoelectric generation sheet is reduced. Further, the thermoelectric generation sheet 104 converts the temperature difference into electromotive force by the seebeck effect principle, thereby outputting power to the outside.
In this embodiment, the photovoltaic thermoelectric system is optimized by spectrum splitting and utilization, and the spectrum of light which cannot be effectively utilized by the photovoltaic thermoelectric system is remolded under the action of the spectroscope, namely the coated short-wave lens 101, so as to realize the graded utilization of solar spectrum. Meanwhile, in this embodiment, the input of invalid spectrum is reduced through the coated short wave lens 101, that is, the input of spectrum which cannot be utilized by the photovoltaic power generation panel 103 is reduced, and compared with other modes, such as heat pipe cooling, RC lamination cooling, air cooling, water cooling, phase change material and the like, which require additional energy consumption and additional complicated heat exchange/storage structure for PV cooling, the structure and the device of this embodiment are simpler and more convenient. It is easy to understand that, in this embodiment, the original light beam is divided into a part of the photovoltaic power generation board 103 through the film-coated short wave lens 101 for generating power, and a part of the original light beam is directly heated by the film-coated short wave lens 101, so that the hot end of the thermoelectric power generation board is heated, and the part of the light wave of the original light beam, which is invalid light energy, of the photovoltaic power generation board 103 is converted into electric energy through the thermoelectric power generation board 104 for outputting. Meanwhile, the embodiment also optimizes the thermal management and spectrum management of the photovoltaic thermoelectric system, reduces the deposition of heat on the surface of the photovoltaic cell, improves the efficiency output of the whole power generation system, optimizes the spectrum energy distribution and utilization, and expands the solar spectrum utilization wave band. The embodiment couples three systems of RC, PV and TE (temperature difference), and has the characteristics of simple structure, reliable operation, energy conservation and environmental protection.
In some embodiments of the present invention, the light transmittance of the coated short wave lens in the range of 0.3 to 0.9 microns is greater than or equal to a predetermined transmittance. In this embodiment, the light wave with the wave band of 0.3 μm band value and 0.9 μm band interval can penetrate through the coated short wave lens 101. And the coated short wave lens 101 absorbs the spectrum with the wave band larger than 0.9 microns and converts the spectrum into heat energy. Illustratively, the transmittance of the coated short wave lens 101 in the 0.9 μm band interval of the 0.3 μm band value is greater than or equal to 90%, while the spectral absorptivity of the coated short wave lens 101 is greater than 95% in the 0.9 μm band.
In some embodiments of the invention, the photovoltaic power generation panel comprises a gallium arsenide power generation panel or a cadmium telluride power generation panel. Since the light wave transmittance of the coated short wave lens 101 in the range from 0.3 micrometers to 0.9 micrometers is greater than or equal to the preset transmittance, that is, the wavelength band 107 of the photovoltaic power generation panel capable of transmitting to the photovoltaic power generation panel 103 through the coated short wave lens 101 is from 0.3 micrometers to 0.9 micrometers, and the effective light wavelength bands of the two photovoltaic cells are from 0.3 micrometers to 0.9 micrometers. Therefore, in this embodiment, any one of the gallium arsenide power generation plate and the cadmium telluride power generation plate is selected as the photovoltaic power generation plate 103, and is matched with the selective permeability of the coated short wave lens 101, so that the spectrum management is optimized, and the spectrum energy distribution and utilization are better optimized.
In some embodiments of the invention, the thermoelectric generation sheet is a semiconductor thermoelectric generation sheet. The present embodiment selects parameters such as volume, temperature difference range, and output power of the thermoelectric generation sheet 104. For the selection of the thermoelectric generation sheet, the power generation temperature response interval of the semiconductor thermoelectric generation sheet is larger in the conventional thermoelectric generation sheet. Meanwhile, in this embodiment, the radiation refrigeration device 102 and the size of the coated short wave lens 101 are combined, and the semiconductor thermoelectric generation sheet is selected as the thermoelectric generation sheet 104 in this embodiment by integrating the temperature difference range and the output power of the conventional thermoelectric generation sheet.
In some embodiments of the present invention, the semiconductor thermoelectric generation sheet includes a P-type thermoelectric material and an N-type thermoelectric material. The thermoelectric generation sheet 104 in this embodiment converts the temperature difference into electromotive force by the seebeck effect principle. Among them, seebeck effect (Seebeck effect) is also called a first thermoelectric effect, and refers to a thermoelectric phenomenon in which a voltage difference between two substances is caused due to a temperature difference of two different electric conductors or semiconductors. The thermoelectric potential direction is generally specified as: at the hot side the current flows from negative to positive. The semiconductor thermoelectric generation piece in the embodiment is a direct current power generation device which is manufactured by a group of semiconductor thermoelectric couples through series connection and parallel connection. Each thermocouple is formed by connecting an N-type semiconductor and a P-type semiconductor, namely a P-type thermoelectric material and an N-type thermoelectric material in series, one end of the N-type semiconductor and the P-type semiconductor are connected with a high-temperature heat source in contact, the non-junction ends of the N-type semiconductor and the P-type semiconductor are both contacted with the low-temperature heat source through wires, negative charges are accumulated at the cold end of P to form a cathode of the generator due to the existence of temperature difference between the hot end and the cold end, positive charges are accumulated at the cold end of N to form an anode, and current flows when the N-type semiconductor is connected with an external circuit.
In some embodiments of the present invention, a coated short wave lens is disposed over a photovoltaic power generation panel, comprising:
the film-coated short wave lens is arranged above a preset distance away from the photovoltaic power generation plate.
In this embodiment, the coated short wave lens 101 is disposed a predetermined distance above the photovoltaic panel 103. Specifically, in this embodiment, the coated short wave lens 101 is disposed at a predetermined distance from the photovoltaic panel 103. For example, the photovoltaic power generation panel 103 is supported on the ground surface by a bracket, and the coated short wave lens 101 is supported and arranged above the photovoltaic power generation panel 103 at a preset distance from the photovoltaic power generation panel 103 by the bracket. It will be readily appreciated that for a wavelength band that is not transparent to the coated short wave lens 101, it will be absorbed by the coated short wave lens 101 and converted into thermal energy. When the distance between the coated short wave lens 101 and the photovoltaic power generation plate 103 is relatively short, the heat accumulated by the coated short wave lens 101 is transmitted to the photovoltaic power generation plate 103 by air or heat radiation, so that the junction temperature of silicon in the PV package is increased, and the performance of the photovoltaic cell is reduced. Therefore, in this embodiment, the distance between the coated short-wave lens 101 and the photovoltaic panel 103 is set to be a preset distance, so as to alleviate the problem that the photovoltaic cell performance is reduced due to the heat accumulated by the coated short-wave lens 101.
In some embodiments of the invention, the radiation-induced cooling film comprises a mixed material radiation-induced cooling film. In the embodiment, the porous polymer is layered by phase inversion preparation, the polymer mixed by various materials is prepared, all parts of molecules are attached by utilizing a constant temperature electromagnetic stirring technology, then the film is coated on an aluminum plate, and the film is dried in air to form a coating, so that the radiation refrigeration film of the mixed material is obtained.
In some embodiments of the invention, the radiant refrigeration film is made by the following method:
and mixing the polydimethylsiloxane prepolymer, the curing agent, the ethyl acetate and the silicon dioxide, and then heating and stirring to obtain a mixed solution.
Adding a preset amount of zirconium dioxide into the mixed solution, and stirring to obtain a stock solution.
And (5) preparing a film according to the stock solution to obtain the radiation refrigeration film.
In this embodiment, the polydimethylsiloxane prepolymer, the curing agent, ethyl acetate and silica are first mixed and then heated and stirred to obtain a mixed solution. Then, adding a preset amount of zirconium dioxide into the mixed solution, and stirring to obtain a stock solution. However, the method is thatAnd then, preparing the stock solution into a film to obtain the radiation refrigeration film. Exemplary, this example first uses 6.0 grams of PDMS (Polydimethylsiloxane) prepolymer, 0.6 grams of curing agent, 44.0 grams of ethyl acetate, and 2.0 grams of SiO 2 And (5) heating and stirring after mixing to obtain a mixed solution. Then adding the mixed solution into a preset amount of ZrO 2 The powder is continuously stirred to obtain a stock solution, so that the stock solution is made into a film to obtain the radiation refrigeration film.
In some embodiments of the present invention, films are made from stock solutions to yield radiation-cooled films, including but not limited to:
and preparing the stock solution into a film through preset operation to obtain the radiation refrigeration film. The preset operation comprises any one mode of blow molding, calendaring, casting and knife coating.
In this embodiment, the radiation refrigeration film is obtained by forming the stock solution into a film by any one of a blow molding method, a rolling method, a casting method, and a blade coating method. Specifically, this example describes 6.0 grams of PDMS prepolymer, 0.6 grams of curing agent, 44.0 grams of ethyl acetate, and 2.0 grams of SiO 2 After mixing, stirring for three hours at a constant temperature of 60 ℃ by using an electromagnetic stirring technology, and adding 0.6 g of ZrO when the solution is viscous 2 The powder is continuously stirred to obtain a stock solution. Then, the radiation refrigeration film is produced by any one of a blow molding method, a rolling method, a casting method, and a blade coating method.
In this embodiment, the radiation refrigeration device 102 adopts a thin film radiation refrigeration method. This example is based on phase inversion to prepare layered porous polymers, and polymers of various material blends in ethyl acetate or acetone (solvent). Meanwhile, in the embodiment, all parts of molecules are attached by using an electromagnetic stirring technology, and then a film is coated on an aluminum plate. Drying in air, the rapid evaporation of volatile ethyl acetate or acetone causes the remaining added material to separate from the aqueous phase, thereby forming microdroplets and micro-nano-droplets. Wherein the micropores and nanopores in the coating effectively back scatter sunlight, i.e., radiate refrigeration band lightwaves 106, and enhance thermal emission power. The radiation refrigeration module in this embodiment uses the sky radiation refrigeration principle. Specifically, sky radiation refrigeration technology refers to the process that an object on the earth surface emits infrared radiation to the universe through an atmospheric window wave band (mainly between 8 and 13 microns) to realize self cooling, the earth surface and the atmosphere absorb solar radiation and simultaneously radiate energy to the outer space in the form of infrared radiation, and the balance between the earth surface and the earth surface determines the average temperature of the earth surface.
In some embodiments of the present invention, the hot end of the thermoelectric generation sheet is connected to the coated short wave lens through a first thermally conductive silica gel, and the radiant refrigeration device is connected to the cold end of the thermoelectric generation sheet through a second thermally conductive silica gel. Specifically, in this embodiment, the hot end of the thermoelectric generation sheet is attached to the coated short wave lens 101 through the first thermal conductive silica gel, so that heat generated by absorbing light waves by the coated short wave lens 101 is better transferred to the hot end of the thermoelectric generation sheet through the thermal conductive silica gel. Meanwhile, in the embodiment, the cold end of the thermoelectric generation sheet is attached to the radiation refrigeration device 102 through the second heat conduction silica gel, so that heat of the cold end of the thermoelectric generation sheet is well transferred to the radiation refrigeration device 102 through the heat conduction silica gel, and the temperature of the cold end of the thermoelectric generation sheet is effectively reduced.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the present invention, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly attached, detachably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiment, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and these equivalent modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (10)
1. A photovoltaic thermoelectric system based on solar energy and radiation refrigeration, the system comprising:
the photovoltaic power generation plate is used for carrying out photovoltaic power generation;
the film-coated short-wave lens is arranged above the photovoltaic power generation plate and is used for heat accumulation;
the thermoelectric generation piece comprises a thermoelectric generation piece hot end and a thermoelectric generation piece cold end, and the thermoelectric generation piece hot end is connected with the film-coated shortwave lens;
the radiation refrigerating device is arranged above the film plating short wave lens, and is connected with the cold end of the thermoelectric generation sheet, and a radiation refrigerating film is arranged on the upper surface of the radiation refrigerating device.
2. The solar and radiation refrigeration based photovoltaic thermoelectric system of claim 1, wherein the light wave transmittance of the coated short wave lens in the range of 0.3 to 0.9 microns is greater than or equal to a predetermined transmittance.
3. The solar and radiant refrigeration based photovoltaic thermoelectric system of claim 2, wherein the photovoltaic power generation panel comprises a gallium arsenide power generation panel or a cadmium telluride power generation panel.
4. The solar and radiant refrigeration based photovoltaic thermoelectric system of claim 1, wherein the thermoelectric generation sheet is a semiconductor thermoelectric generation sheet.
5. The solar and radiant refrigeration based photovoltaic thermoelectric system of claim 4 wherein the semiconductor thermoelectric generation sheet comprises a P-type thermoelectric material and an N-type thermoelectric material.
6. The solar and radiation refrigeration based photovoltaic thermoelectric system of claim 1, wherein the coated short wave lens is disposed above the photovoltaic power generation panel, comprising:
the film-coated short wave lens is arranged above a preset distance away from the photovoltaic power generation plate.
7. The solar and radiation refrigeration based photovoltaic thermoelectric system of claim 1 wherein the radiation refrigeration film comprises a hybrid material radiation refrigeration film.
8. The solar and radiant refrigeration based photovoltaic thermoelectric system of claim 7, wherein the radiant refrigeration film is made by the method of:
mixing a polydimethylsiloxane prepolymer, a curing agent, ethyl acetate and silicon dioxide, and heating and stirring to obtain a mixed solution;
adding a preset amount of zirconium dioxide into the mixed solution, and stirring to obtain a stock solution;
and preparing a film according to the stock solution to obtain the radiation refrigeration film.
9. The solar and radiant refrigeration based photovoltaic thermoelectric system of claim 8, wherein the forming a film from the stock solution results in the radiant refrigeration film comprising:
preparing the stock solution into a film through preset operation to obtain the radiation refrigeration film; wherein the preset operation comprises any one mode of blow molding, calendaring, casting and knife coating.
10. The photovoltaic thermoelectric system based on solar energy and radiation refrigeration according to claim 1, wherein the hot end of the thermoelectric generation sheet is connected with the coated short wave lens through first heat conducting silica gel, and the radiation refrigeration device is connected with the cold end of the thermoelectric generation sheet through second heat conducting silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211548377.1A CN116054734A (en) | 2022-12-05 | 2022-12-05 | Photovoltaic thermoelectric system based on solar energy and radiation refrigeration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211548377.1A CN116054734A (en) | 2022-12-05 | 2022-12-05 | Photovoltaic thermoelectric system based on solar energy and radiation refrigeration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116054734A true CN116054734A (en) | 2023-05-02 |
Family
ID=86112290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211548377.1A Pending CN116054734A (en) | 2022-12-05 | 2022-12-05 | Photovoltaic thermoelectric system based on solar energy and radiation refrigeration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116054734A (en) |
-
2022
- 2022-12-05 CN CN202211548377.1A patent/CN116054734A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8921683B2 (en) | Combined solar/thermal (CHP) heat and power for residential and industrial buildings | |
| Hasan | Enhancement the performance of PV panel by using fins as heat sink | |
| CN107255368A (en) | A kind of full spectrum of solar energy of frequency division type low-concentration photovoltaic high power concentrator photo-thermal/coupled thermomechanics utilizes system | |
| US9581142B2 (en) | Radiating power converter and methods | |
| CN108599622B (en) | Solar energy absorption temperature difference power generation device | |
| US9331258B2 (en) | Solar thermoelectric generator | |
| Kavoosi Balotaki et al. | Design and performance of a novel hybrid photovoltaic–thermal collector with pulsating heat pipe (PVTPHP) | |
| JPH10110670A (en) | Solar light and heat compound generation device | |
| US20130037108A1 (en) | Thermodynamically shielded solar cell | |
| CN111446886B (en) | Temperature difference power generation device capable of effectively increasing end difference temperature | |
| Zhang et al. | Power generation on chips: Harvesting energy from the sun and cold space | |
| CN116054734A (en) | Photovoltaic thermoelectric system based on solar energy and radiation refrigeration | |
| RU2399118C1 (en) | Photoelectric converter based on nonplanar semiconductor structure | |
| Stone et al. | Testing and modeling of a solar thermophotovoltaic power system | |
| Fathabadi | Novel silica-based PV glass cover providing higher radiative cooling and power production compared with state-of-the-art glass covers | |
| CN102203958A (en) | Photovoltaic module and photovoltaic system | |
| US20100018567A1 (en) | Solar power generating system employing a solar battery | |
| CN115118218A (en) | Photovoltaic thermoelectric power generation device based on radiation refrigeration | |
| CN108831947A (en) | A kind of flexible photovoltaic thermoelectric integral compound power-generating device | |
| JP2017184567A (en) | Thermophotovoltaic generator and thermophotovoltaic generation system | |
| Akhatov et al. | Study of thermal-technical parameters and experimental investigations on PV-Thermal collector | |
| CN214256160U (en) | Thermoelectric generator | |
| JP2016077085A (en) | Photovoltaic power generation system | |
| Andreev et al. | Solar thermophotovoltaic converter with Fresnel lens and GaSb cells | |
| Jaffré et al. | Design and characterization of a curved linear Fresnel lens concentrating photovoltaic and thermal system |
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 |