CN116642274A - Active and passive integrated refrigerating device based on photovoltaic thermoelectric radiation - Google Patents
Active and passive integrated refrigerating device based on photovoltaic thermoelectric radiation Download PDFInfo
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- 238000005057 refrigeration Methods 0.000 claims abstract description 100
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- 238000001816 cooling Methods 0.000 claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
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- 238000005265 energy consumption Methods 0.000 abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
- F25B23/003—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect using selective radiation effect
-
- 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
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The application discloses an active and passive integrated refrigerating device based on photovoltaic thermoelectric radiation, which comprises: a cover plate of the transparent plate; the box body comprises a frame and a bottom plate; the frame and the bottom plate are integrally arranged, and the frame is in interference fit with the cover plate; convex air openings are arranged on the front-back symmetrical surfaces of the frame; the spectrum selective PV-RC composite board is inlaid at the lower part of the cover plate and fixed on the frame; the spectrum selective PV-RC composite board comprises a polished aluminum composite board, a reflective radiation refrigeration film and a plurality of photovoltaic cells, wherein the reflective radiation refrigeration film is tightly attached to the first surface of the polished aluminum composite board, and the photovoltaic cells are inlaid on the surface of the reflective radiation refrigeration film at equal intervals; the cooling air duct penetrates through the central axis of the box body and is positioned below the spectrum selectivity PV-RC composite board; a plurality of heat exchange channels are arranged on the bottom plate; the thermoelectric cooler is in interference fit with the base plate. The application can realize the passive refrigeration process, thereby achieving the effect of zero energy consumption and zero emission.
Description
Technical Field
The application relates to the technical field of refrigeration, in particular to an active and passive integrated refrigeration device based on photovoltaic thermoelectric radiation.
Background
In the related art, the refrigerating device is widely applied to buildings, vehicles, ships, factories and even laboratories, and can provide comfortable living environment and improve the quality of goods and the safety of instruments. With the increasing global warming and climate, the energy consumption of active refrigeration devices such as air conditioners has increased tremendously. A widely used refrigeration method is currently compression type refrigerators. Compared with the traditional air conditioner, the magnetic suspension central air conditioner has the characteristics of high efficiency, no maintenance, small noise, long service life and the like, but has the characteristics of high manufacturing cost, difficult waste heat utilization, large size and the like. Most of the air conditioners in the market are driven by electric power of a power grid, and the air conditioners have larger power consumption and high power consumption and cannot effectively save electric energy.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides the active and passive integrated refrigerating device based on the photovoltaic thermoelectric radiation, which can effectively save electric energy.
The embodiment of the application provides an active and passive integrated refrigerating device based on photovoltaic thermoelectric radiation, which comprises:
the cover plate is a transparent plate;
the box body comprises a rack and a bottom plate; the frame and the bottom plate are integrally arranged, and the frame is in interference fit with the cover plate; convex air openings are arranged on the front-back symmetrical surfaces of the frame;
the spectrum selective PV-RC composite board is inlaid at the lower part of the cover plate and is fixed on the rack; the spectrum selective PV-RC composite board comprises a polished aluminum composite board, a reflective radiation refrigeration film and a plurality of photovoltaic cells, wherein the reflective radiation refrigeration film is tightly attached to the first surface of the polished aluminum composite board, and the plurality of photovoltaic cells are inlaid on the surface of the reflective radiation refrigeration film at equal intervals;
the cooling air duct penetrates through the central axis of the box body and is positioned below the spectrum selectivity PV-RC composite board;
the plurality of heat exchange channels are arranged on the bottom plate;
a thermoelectric cooler in interference fit with the base plate;
when the solar radiation intensity meets a first preset condition, the thermoelectric cooler provides a working power supply through the photovoltaic cell so as to perform active refrigeration; and when the solar radiation intensity meets a second preset condition, the reflective radiation refrigeration film performs passive refrigeration based on the infrared heat radiation wave band.
In some embodiments, the reflective radiant refrigeration film includes a coating layer, a metal layer, and a transparent polyester PET layer; the metal layer is located above the transparent polyester PET layer, and the coating layer is located above the metal layer.
In some embodiments, the step of preparing the coating layer comprises:
the microspheres with the particle size of 1-15 microns are randomly embedded in the polymethyl methacrylate coating, and then a film with the thickness of 0-150 microns is prepared by dip coating, spray coating or tape casting to be used as a coating layer.
In some embodiments, the metal layer preparation step includes:
and depositing a metal layer with the thickness ranging from 15 nanometers to 150 nanometers on the back surface of the transparent polyester PET layer by adopting a magnetron sputtering method.
In some embodiments, the particle size of the microspheres comprises 4 microns.
In some embodiments, the coating layer comprises 14.55% by thickness of the reflective radiation refrigeration film, the metal layer comprises 0.10% by thickness of the reflective radiation refrigeration film, and the transparent polyester PET layer comprises 85.35% by thickness of the reflective radiation refrigeration film.
In some embodiments, the cooling duct is comprised of a thermal insulation material and the rack; the heat exchange channel is composed of a heat insulation material and the bottom plate.
In some embodiments, the apparatus further comprises:
and the transparent cover is covered on the outer surface of the cover plate.
In some embodiments, the transparent cover is composed of a low density polyethylene film.
In some embodiments, the thermoelectric cooler comprises a porch thermoelectric cooler.
The active and passive integrated refrigerating device based on the photovoltaic thermoelectric radiation provided by the embodiment of the application has the following beneficial effects:
according to the embodiment, the plurality of photovoltaic cells are arranged on the spectrum selective PV-RC composite board, so that when the solar radiation intensity is high, the photovoltaic cells provide working power for the thermoelectric cooler to perform active refrigeration, and the power consumption is greatly saved; and the reflection type radiation refrigeration film is arranged on the spectrum selectivity PV-RC composite board, so that radiation refrigeration can be carried out through the reflection type radiation refrigeration film when the solar radiation intensity is smaller, a passive refrigeration process is realized, and the effect of zero energy consumption and zero emission is further achieved.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The application is further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic structural diagram of an active and passive integrated refrigeration device based on photovoltaic thermoelectric radiation according to an embodiment of the present application;
fig. 2 is an overall schematic diagram of an active and passive integrated refrigeration device based on photovoltaic thermoelectric radiation according to an embodiment of the present application;
FIG. 3 is a schematic view of a spectrum selective PV-RC composite panel according to an embodiment of the present application;
fig. 4 is a schematic diagram of experimental data according to an embodiment of the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
In the description of the present application, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
In the description of the present application, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is 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 description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the description of the present application, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean 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 application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the related art, in order to maintain comfort of living environment, quality of goods, and safety of instruments, a refrigerating apparatus is widely used in buildings, vehicles, ships, factories, and even laboratories. Nowadays, under conditions of global warming and increasingly hot weather, energy consumption of active refrigeration devices such as air conditioners is drastically increased. The refrigeration mode widely used at present is a compression type refrigerator. After the magnetic suspension central air conditioner is pushed out, compared with the traditional air conditioner, the magnetic suspension central air conditioner has the characteristics of high efficiency, no maintenance, small noise, long service life and the like, but has the characteristics of high manufacturing cost, difficult utilization of waste heat, large size and the like. Most of the air conditioners in the market are driven by electric power of a power grid, and the air conditioners have larger power consumption and high power consumption and cannot effectively save electric energy.
With the advent of passive refrigeration technology based on sky radiation refrigeration, the technology can emit infrared radiation to the universe through an atmospheric window wave band (8-13 μm) according to the earth surface high temperature heat source so as to realize the self cooling process, and as a refrigeration technology without energy input, the sky radiation refrigeration can provide a new thought for coping with energy crisis and global warming. However, the device is limited by factors such as small radiation window, large weather influence and the like, has low refrigeration power density and strong environment variability, and is difficult to replace an active refrigeration device independently for space refrigeration. Therefore, how to make the existing refrigeration technology more energy-saving and emission-reducing and find a new refrigeration technology to replace is a problem to be solved.
Thermoelectric coolers (TECs) are devices based on the peltier effect, which typically comprise two semiconductor materials and transfer heat from one side of the device to the other while forcing a current to pass, the TECs being free of moving parts and working fluid, reliable in operation and small in size. However, the optimization design research of the cold and hot end heat dissipation systems of the thermoelectric cooler is less, and the power and the size of the thermoelectric cooler are smaller and are difficult to be arranged in an array mode, so that the thermoelectric cooler has poor adaptability to other power supply equipment. Therefore, how to realize the effective heat dissipation of the thermoelectric cooler and how to realize the array-type power supply module of the thermoelectric cooler are a big problem of the current semiconductor refrigeration.
Based on the above problems, referring to fig. 1 and 2, an embodiment of the present application provides an active and passive integrated refrigeration device based on photovoltaic thermoelectric radiation, which includes a cover plate 100, a box, a spectrally selective PV-RC composite plate 300, a cooling air duct, a plurality of heat exchange channels 500, and a thermoelectric cooler 400. It can be appreciated that the cover plate of this embodiment is a transparent plate, so that solar rays can enter the case conveniently. The case includes a frame 200 and a bottom plate 600; the chassis 200 and the base 600 are integrally provided, i.e., the chassis and the base are not detachable. The frame 200 is in interference fit with the cover plate 100, wherein the interference fit refers to that elastic pressure is generated between the surfaces of parts after the assembly depending on the interference value of the shaft and the hole, so that the fastening connection is obtained. The front and back symmetrical surfaces of the frame are provided with convex air openings, and the convex air openings comprise an inlet 201 and an outlet 202. The spectrally selective PV-RC composite plate 300 is inlaid in the lower portion of the cover plate 100 and is fixed to the frame 200. The PV is a photovoltaic cell, the RC is a reflective radiation refrigeration film, the PV-RC composite board is the combination of the photovoltaic cell and the reflective radiation refrigeration film, and the photovoltaic cell covers the surface of the reflective radiation refrigeration film. Specifically, as shown in fig. 3, the spectrum selective PV-RC composite board includes a polished aluminum composite board 303, a reflective radiation refrigeration film 302 and a plurality of photovoltaic cells 303, the reflective radiation refrigeration film 302 is tightly attached to a first surface of the polished aluminum composite board 303, and the plurality of photovoltaic cells 301 are inlaid on the surface of the reflective radiation refrigeration film 302 at equal intervals. The cooling air duct penetrates through the central axis of the box body and is positioned below the spectrum selective PV-RC composite board. The dry heat exchange channels are all arranged on the bottom plate, and the plurality of heat exchange channels can comprise 18 heat exchange channels. The thermoelectric cooler is in interference fit with the base plate.
In this embodiment, when the intensity of solar radiation meets a first preset condition, the thermoelectric cooler provides a working power supply through the photovoltaic cell so as to perform active refrigeration; when the solar radiation intensity meets a second preset condition, the reflective radiation refrigeration film performs passive refrigeration based on the infrared heat radiation wave band.
Based on this principle, the device of the embodiment of the present application can operate in the following two modes:
mode one: when the solar radiation intensity is stronger in daytime, sunlight with the wave band of 0.3-1.1 microns acts on a photovoltaic cell to perform photovoltaic power generation, TEC (thermoelectric cooler) is powered on to start working, and cold energy is generated at the cold end to create a refrigerating space; the reflective radiation refrigerating film has higher reflectivity in other full spectrum ranges including sunlight wave bands, and prevents the surface of the refrigerating space from being heated by illumination, heat accumulation and temperature rise. The refrigerating device is provided with an air inlet pipe and an air outlet pipe, and cold air can be generated for subsequent use in a convection mode and the like.
Mode two: when the solar radiation intensity is weaker at night, the reflective radiation refrigeration film has high emissivity for the infrared heat radiation wave band of 8-13 nanometer wave bands, strengthens the infrared radiation property of an atmospheric window, and performs radiation refrigeration.
In the embodiment of the application, the reflective radiation refrigeration film comprises a coating layer, a metal layer and a transparent polyester PET layer; the metal layer is located above the transparent polyester PET layer and the coating layer is located above the metal layer. It will be appreciated that the steps for preparing the coating layer include: the microspheres with the particle size of 1-15 micrometers are randomly embedded in the polymethyl methacrylate coating, and then a film with the thickness of 0-150 micrometers is prepared by dip coating, spray coating or tape casting to serve as a coating layer, so that the solar reflectivity of 96% can be provided through the coating layer, and the refrigerating effect is further improved. The coating layer prepared by the embodiment not only can enhance the emission of infrared heat radiation wave bands of 8-13 nanometers, but also has higher reflectivity in solar irradiation in other spectral ranges including sunlight wave bands, and can create more excellent refrigerating space for the lower part of the spectrum-selective PV-RC composite board by combining with a photovoltaic cell, thereby achieving the refrigerating effect.
In the embodiment of the application, the coating layer can comprise polymethyl methacrylate coating, micron spherical particles (TiO 2 with the particle size of 4 nanometers), benzotriazole ultraviolet absorbent, ethoxylated aliphatic alkylamine antistatic agent, indium Tin Oxide (ITO) and Antimony Tin Oxide (ATO) infrared absorbent with the mass ratio of 1:1, wherein the metal layer is metal chromium and metal titanium, and the transparent polyester PET layer is biaxially oriented PET. In the spectrum selective PV-RC composite board, the thickness ratio of the coating layer to the reflective radiation refrigeration film comprises 14.55%, the thickness ratio of the metal layer to the reflective radiation refrigeration film comprises 0.10%, and the thickness ratio of the transparent polyester PET layer to the reflective radiation refrigeration film comprises 85.35%.
When microspheres with the particle size of about 1-15 mu m (TiO 2 with the particle size of 4 mu m) are randomly embedded in polymethyl methacrylate coating, a film with the thickness of 50-150 mu m is prepared by dip coating, spray coating or tape casting, and a metal layer with the thickness of 15-150 nm is further deposited on the back of transparent ester PET by adopting a magnetron sputtering method, so that the solar reflectivity of 96% can be provided, and the refrigerating effect is further improved. The material not only can radiate energy outwards in the form of infrared electromagnetic waves, but also has higher reflectivity in other spectral ranges including sunlight wave bands, thereby achieving the effect of refrigeration.
It can be understood that, the reflective radiation refrigeration film material with the strongest infrared emission capability and the strongest reflective capability is manufactured and selected in this embodiment, and a plurality of experiments are performed to verify that, by comparing three different preparation materials, the materials are respectively:
experiment group 1:10% titanium dioxide + plexiglass (PMMA 100 μm);
experiment group 2:10% titanium dioxide + polydimethylsiloxane (PDMS 100 μm);
experiment group 3:10% titanium dioxide + polymethyl methacrylate.
The experimental data were plotted to obtain the graph shown in fig. 4. From FIG. 4, it is confirmed that 10% of titanium dioxide and polymethyl methacrylate have the most excellent emission properties by decreasing the temperature by about 2℃from the ambient temperature in the daytime.
In the embodiment of the application, the cooling air duct consists of a heat insulation material and a rack; the heat exchange channel consists of heat insulating material and bottom board. According to the embodiment, the cooling air duct and the heat exchange channel are arranged, so that redundant heat generated in the device can be taken away better, and the low-temperature state of the environment is maintained.
In the embodiment of the application, 21 crystalline silicon photovoltaic cells 301 can be installed on the upper surface of the reflective radiation refrigeration film, and each row of 7 cells is uniformly distributed in 3 rows. The photovoltaic cell plays a role of a sun shield, reduces direct sunlight, converts solar energy with the wavelength of 0.3-1.1 nanometers into electric energy, and provides power for a thermoelectric cooler (TEC).
In an embodiment of the application, the device further comprises a transparent cover, and the transparent cover covers the outer surface of the cover plate. The transparent cover is composed of a low-density polyethylene film, can almost cover the whole wave band, thereby reducing convection heat exchange and effectively protecting the device from factors such as rainwater and dust.
In the embodiment of the application, the thermoelectric cooler can comprise a porch type thermoelectric cooler, is a promising alternative cooling device for generating cooling energy based on the Peltier effect, and generates a cold and hot surface on two sides respectively when current flows. The cold face is beneficial to creating more excellent refrigerating space. The hot-face ceramic has extended edges to firmly hold the leads and to arrange the thermoelectric cooler wires in an array. The TEC (thermoelectric cooler) is powered by the photovoltaic cell, does not need to provide redundant power supply, can be well matched with solar radiation and cooling load distribution, and has good adaptability to the solar radiation.
Therefore, the solar power generation, semiconductor refrigeration and radiation refrigeration technology are combined, the sky radiation refrigeration and thermoelectric cooler refrigeration active and passive integrated refrigeration effect is achieved, the photovoltaic power generation module and the radiation refrigeration module are mutually promoted, high refrigeration efficiency can be generated without an external power supply, and zero emission and zero energy consumption are achieved.
Based on the above, the refrigerating device provided by the embodiment of the application has the following beneficial effects:
the first and the whole day are refrigerated uninterruptedly. In the embodiment, the photovoltaic cell, the reflective radiation refrigeration film and the thermoelectric cooler (TEC) are combined, the photovoltaic cell is a sun shield in the daytime, meanwhile, power generation is carried out for the TEC to work and refrigerate, the reflective radiation refrigeration film has higher reflectivity in other full spectrum ranges including sunlight wave bands, and the surface heat absorption is reduced; at night, the reflective radiation refrigeration film performs radiation refrigeration, and the photovoltaic cell helps the reflective radiation refrigeration film to have more remarkable emission performance, so that 24-hour full-day-period efficient refrigeration is realized.
And secondly, self-adapting adjustment under different working conditions. The active refrigeration power of the embodiment can realize automatic control along with the intensity of solar radiation, when the intensity of solar radiation is larger, the photovoltaic cell generates more electricity, so that the refrigeration power of a single thermoelectric cooler (TEC) is large, meanwhile, the power supply distributor is connected with the temperature sensor, the opening quantity of the TEC can be controlled according to the thermal load, and the accurate control of the active refrigeration power is realized; when the intensity of solar radiation is small, the refrigeration power of the thermoelectric cooler is small. The reflective radiation refrigerating film mainly performs passive refrigeration at night, and if the environmental heat load is large, the thermoelectric cooler is started to perform compensation refrigeration. The whole-day supplied cold quantity of the device can realize the passive self-adaption of the device along with the adjustment of the solar radiation intensity.
Thirdly, multi-frequency utilization of solar radiation. According to the embodiment, the photovoltaic cell and the reflective radiation refrigeration film are combined to form the composite board, and the reflective radiation refrigeration film can prevent an object from getting heat and strengthen radiation and heat dissipation of the object while photovoltaic power generation is performed. The composite board has the advantages of greatly reducing the heat load, improving the refrigeration efficiency, saving energy and protecting environment (the photovoltaic battery works to utilize light with the wave band of 0.3-1.1 mu m, the reflective radiation refrigeration film has high emissivity for solar energy with the wave band of 8-13 mu m, and realizes passive refrigeration, and the solar energy in other spectral ranges including the solar wave band has higher reflectivity).
Fourth, the energy is supplied independently and used with high efficiency. The photovoltaic cell and the semiconductor refrigerating and heating technology are combined, the photovoltaic cell provides energy for the semiconductor refrigerating device, the purpose of refrigeration is achieved, an excellent refrigerating space is created, meanwhile, the energy at the hot end of the semiconductor device can be collected and stored through cooling water to be used as domestic hot water, heat retention is reduced, and energy conservation and economy are improved.
The embodiments of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application. Furthermore, embodiments of the application and features of the embodiments may be combined with each other without conflict.
Claims (10)
1. Active and passive integrated refrigerating device based on photovoltaic thermoelectric radiation, characterized by comprising:
the cover plate is a transparent plate;
the box body comprises a rack and a bottom plate; the frame and the bottom plate are integrally arranged, and the frame is in interference fit with the cover plate; convex air openings are arranged on the front-back symmetrical surfaces of the frame;
the spectrum selective PV-RC composite board is inlaid at the lower part of the cover plate and is fixed on the rack; the spectrum selective PV-RC composite board comprises a polished aluminum composite board, a reflective radiation refrigeration film and a plurality of photovoltaic cells, wherein the reflective radiation refrigeration film is tightly attached to the first surface of the polished aluminum composite board, and the plurality of photovoltaic cells are inlaid on the surface of the reflective radiation refrigeration film at equal intervals;
the cooling air duct penetrates through the central axis of the box body and is positioned below the spectrum selectivity PV-RC composite board;
the plurality of heat exchange channels are arranged on the bottom plate;
a thermoelectric cooler in interference fit with the base plate;
when the solar radiation intensity meets a first preset condition, the thermoelectric cooler provides a working power supply through the photovoltaic cell so as to perform active refrigeration; and when the solar radiation intensity meets a second preset condition, the reflective radiation refrigeration film performs passive refrigeration based on the infrared heat radiation wave band.
2. The active and passive integrated refrigeration device based on photovoltaic thermoelectric radiation according to claim 1, characterized in that said reflective radiation refrigeration film comprises a coating layer, a metal layer and a transparent polyester PET layer; the metal layer is located above the transparent polyester PET layer, and the coating layer is located above the metal layer.
3. The active and passive integrated refrigeration device based on photovoltaic thermoelectric radiation according to claim 2, wherein the step of preparing the coating layer comprises:
the microspheres with the particle size of 1-15 microns are randomly embedded in the polymethyl methacrylate coating, and then a film with the thickness of 0-150 microns is prepared by dip coating, spray coating or tape casting to be used as a coating layer.
4. The active and passive integrated refrigeration device based on photovoltaic thermoelectric radiation according to claim 2, wherein the preparation step of the metal layer comprises:
and depositing a metal layer with the thickness ranging from 15 nanometers to 150 nanometers on the back surface of the transparent polyester PET layer by adopting a magnetron sputtering method.
5. A photovoltaic thermoelectric radiation based active and passive integrated refrigeration device according to claim 3 wherein the microsphere particle size comprises 4 microns.
6. The active and passive integrated refrigeration device based on photovoltaic thermoelectric radiation according to any one of claims 2 to 5, wherein the coating layer comprises 14.55% of the thickness of the reflective radiation refrigeration film, the metal layer comprises 0.10% of the thickness of the reflective radiation refrigeration film, and the transparent polyester PET layer comprises 85.35% of the thickness of the reflective radiation refrigeration film.
7. The active and passive integrated refrigeration device based on photovoltaic thermoelectric radiation according to claim 1, wherein the cooling air duct consists of a heat insulation material and the rack; the heat exchange channel is composed of a heat insulation material and the bottom plate.
8. An active and passive integrated refrigeration device based on photovoltaic thermoelectric radiation according to claim 1, characterized in that said device further comprises:
and the transparent cover is covered on the outer surface of the cover plate.
9. The active and passive integrated refrigeration device based on photovoltaic thermoelectric radiation according to claim 8, wherein said transparent cover is composed of a low density polyethylene film.
10. An active and passive integrated refrigeration device based on photovoltaic thermoelectric radiation as claimed in claim 1, wherein said thermoelectric cooler comprises a porch-type thermoelectric cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310786368.4A CN116642274A (en) | 2023-06-28 | 2023-06-28 | Active and passive integrated refrigerating device based on photovoltaic thermoelectric radiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310786368.4A CN116642274A (en) | 2023-06-28 | 2023-06-28 | Active and passive integrated refrigerating device based on photovoltaic thermoelectric radiation |
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| Publication Number | Publication Date |
|---|---|
| CN116642274A true CN116642274A (en) | 2023-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310786368.4A Pending CN116642274A (en) | 2023-06-28 | 2023-06-28 | Active and passive integrated refrigerating device based on photovoltaic thermoelectric radiation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116642274A (en) |
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2023
- 2023-06-28 CN CN202310786368.4A patent/CN116642274A/en active Pending
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