CN109631416B - Water-gas dual-purpose flat-plate solar heat collection and radiation refrigeration comprehensive utilization device - Google Patents
Water-gas dual-purpose flat-plate solar heat collection and radiation refrigeration comprehensive utilization device Download PDFInfo
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- CN109631416B CN109631416B CN201910008289.4A CN201910008289A CN109631416B CN 109631416 B CN109631416 B CN 109631416B CN 201910008289 A CN201910008289 A CN 201910008289A CN 109631416 B CN109631416 B CN 109631416B
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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
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- F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
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Abstract
The invention discloses a water-gas dual-purpose flat-plate type solar heat collection and radiation refrigeration comprehensive utilization device, which comprises a box body with an open top surface, wherein a heat collection plate is arranged in the box body, a metal pipe is arranged between the heat collection plate and the bottom of the box body, two ends of the metal pipe are respectively connected with a collecting pipe and communicated with the collecting pipes, one end of each of the two collecting pipes is closed, the other end of each of the two collecting pipes extends to the outside of the box body, the outer end of one collecting pipe is a cold water inlet, the outer end of the other collecting pipe is a hot water outlet, an opening on the top surface of the box body is provided with a full-waveband high-transmittance material film, two glass cover plates are arranged in the box body between the heat collection plate and the full-waveband high-transmittance material film, a cavity between the two glass cover plates is a cold medium heat exchange cavity, a cavity between the heat collection plate and; the upper surface of the upper glass cover plate is covered with a radiation refrigeration film. The device has good heat preservation effect and heat collection effect.
Description
Technical Field
The invention belongs to the technical field of renewable energy utilization, and particularly relates to a water-gas dual-purpose flat-plate type solar heat collection and radiation refrigeration comprehensive utilization device.
Background
The utilization of renewable energy is an important way for energy conservation and emission reduction. Solar energy is used as a clean, universal and long-lasting green energy source and has incomparable advantages compared with the conventional energy source. Meanwhile, the temperature of the outer space is close to absolute zero, so that the solar energy-saving solar water heater is an ideal natural cold source.
At present, the solar heat collection technology is mature, but due to the influence of changing day and night, the solar heat collector is always in an idle state at night, so that the use efficiency of the solar heat collector is greatly reduced; meanwhile, the radiation refrigeration also has the defects that the single refrigeration power is not large enough and has certain upper limit, so that the device cost is higher, the radiation refrigeration device is difficult to realize the refrigeration effect in the daytime, and the like.
In order to ensure higher heat collection efficiency, the plate core of the solar flat plate collector adopts a coating and a cover plate with spectral selectivity at present. The solar radiation wave band (0.2-3 um) of the coating has higher spectral absorptivity (low reflectivity) to absorb most of solar radiation, and has low spectral emissivity (high reflectivity) in the middle and far infrared wave band (more than or equal to 2.5um) to reduce radiation heat loss; the transmittance of the low-iron glass cover plate in a solar radiation wave band can reach over 90 percent, and the transmittance in other wave bands is extremely low, so that the low-iron glass cover plate has a greenhouse effect.
The earth's atmosphere has a high transmission in the 8-13 μm band, which is called the "atmospheric window". The night radiation refrigeration technology means that a refrigeration surface performs radiation heat exchange with outer space with low temperature through an 'atmospheric window' at night to realize passive refrigeration. At night, solar short wave radiation disappears, the heat collector cannot be used, in hot seasons, the building refrigeration demand is large, the heating demand is small, the heat energy collected by the heat collector increases the building cold load, in order to enable the heat collector to be more fully utilized, the refrigeration function can be realized on the solar heat collector, long wave radiation is utilized at night to supply cold for the building, the cold load is reduced, and the purpose of energy conservation is achieved.
Chinese patent CN103776196A discloses a comprehensive application device for solar heat collection and radiation refrigeration. The solar heat collection and radiation refrigeration comprehensive application device replaces a glass cover plate of a common solar flat plate collector with a radiation refrigeration film, and a full-wave-band high-transmittance material film is additionally arranged above the radiation refrigeration film. Form the air channel between thermal-arrest board core and the radiation refrigeration film, in daytime the use, the cold air is heated after the air channel absorbs the heat of gathering the thermal-arrest board core, become hot-air, be used for heating, at night, the hot-air is cooled off after the passageway transmits the heat to the radiation refrigeration film, become cold air, be used for cooling etc. solved traditional flat-plate solar collector effectively and can only prepare hot water, the radiation refrigeration device can only carry out refrigerated function singleness's limitation at night, realize solar energy collection and radiation refrigeration's comprehensive application. However, the radiation refrigeration film adopted by the comprehensive application device is directly contacted with the cold-carrying medium, so that the cold-carrying medium of the device can only select air, and a water system cannot be applied, and the heat exchange effect of the water system is better than that of air, and the cold energy is conveniently stored for use in the daytime; meanwhile, compared with the traditional solar heat collector, the device abandons glass, so that the greenhouse effect of the glass is lost, and the heat collection effect of the device is reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the water-gas dual-purpose flat plate type solar heat collection and radiation refrigeration comprehensive utilization device which can adopt air or water as a cold carrying medium and has good heat collection effect.
The technical scheme of the invention is realized as follows:
the water-gas dual-purpose flat-plate type solar heat collection and radiation refrigeration comprehensive utilization device comprises a box body with an open top surface, wherein a heat collection plate is arranged in the box body, the heat collection plate is parallel to the top surface and the bottom surface of the box body, a plurality of parallel metal tubes are uniformly distributed and arranged between the heat collection plate and the bottom of the box body, all the metal tubes are in contact with the heat collection plate and the bottom of the box body, two ends of each metal tube are respectively connected with the same header tube perpendicular to the metal tubes and communicated with the header tube, one end of each two header tubes is closed, the other end of each two header tubes extends to the outside of the box body, the outer end of one; the opening of the top surface of the box body is provided with a full-wave-band high-transmittance material film.
Two glass cover plates parallel to the bottom surface of the box body are further arranged in the box body between the heat collecting plate and the full-wave-band high-transmittance material film from top to bottom, a cold-carrying medium heat exchange cavity is formed in a cavity between the two glass cover plates, a cold-carrying medium inlet and a cold-carrying medium outlet are formed in the side wall of the box body, and the cold-carrying medium inlet and the cold-carrying medium outlet are respectively communicated with the cold-carrying medium heat exchange cavity and are positioned on two opposite side walls of the box body; a heat-carrying air heat exchange cavity is formed by a cavity between the heat collecting plate and the lower glass cover plate, a cold air inlet and a hot air outlet are arranged on the side wall of the box body, and the cold air inlet and the hot air outlet are respectively communicated with the heat-carrying air heat exchange cavity and are positioned on two opposite side walls of the box body; and the upper surface of the upper glass cover plate is covered with a radiation refrigeration film.
Further, the upper surface of the heat collection plate is covered with a solar selective absorption coating, the absorptivity of the solar selective absorption coating in a solar heat utilization wave band of 0.2-3 mu m is more than 90%, and the emissivity of the solar selective absorption coating in a middle and far infrared wave band of more than 3 mu m is lower than 10%.
Further, the solar selective absorption coating material is a metal ceramic coating belt or a blue titanium coating.
Furthermore, the full-wave-band high-transmittance material film is a polyethylene film, the transmittance of the full-wave-band high-transmittance material film in a wave band of 0-25 microns is more than 80%, and the transmittance of the full-wave-band high-transmittance material film in a solar radiation wave band of 0.2-3 microns and an atmospheric window wave band of 8-13 microns is 85% -90%.
Furthermore, the lower surface of the upper glass cover plate is provided with a plurality of strip-shaped glass fins, and the glass fins and the upper glass cover plate are integrally formed.
Furthermore, the glass cover plate is made of low-iron ultra-white glass, the transmittance of the glass cover plate in a wave band of 0.2-3 mu m is more than 90%, the glass cover plate has a blocking effect on long-wave radiation, and a greenhouse effect can be formed.
Furthermore, the radiation refrigeration film is a polyethylene terephthalate film or a polyvinyl fluoride film, the emissivity in an atmospheric window wave band of 8-13 mu m is 80-90%, and the transmittance in other wave bands is 70-90%.
Further, the box body is made of a heat insulation material, and the heat insulation material is phenolic foam or rock wool.
Further, the metal pipe is a copper pipe.
Compared with the prior art, the invention has the following beneficial effects:
1. the solar heat collector is provided with the lower layer glass cover plate and the upper layer glass cover plate, the transmittance of the lower layer glass cover plate in the main solar radiation wave band of 0.2-3 microns is more than 91.5%, and the lower layer glass cover plate has a blocking effect on long-wave radiation, so that most of solar radiation is projected onto the heat collecting plate through the low-iron ultra-white glass in the daytime, the long-wave radiation cannot be transmitted out, the heat loss of the long-wave radiation in the daytime is reduced, and the heat collecting effect is enhanced; the emissivity of the upper glass cover plate in a long wave radiation wave band reaches 94 percent, so that the upper glass cover plate can radiate heat to the outer space by utilizing the high emissivity in the long wave band at night for refrigeration.
2. The solar heat collector is provided with the radiation refrigeration film, has high emissivity at the atmospheric window wave band of 8-13 mu m, and has high transmittance at other wave bands, particularly at the solar radiation wave band of 0.2-3 mu m, so that most of solar radiation can be projected onto the heat collecting plate through the radiation refrigeration film in the daytime, and the solar heat collector utilizes the high emissivity at the atmospheric window wave band of 8-13 mu m to radiate heat to the outer space at night for refrigeration.
3. The full-wave-band high-transmittance material film is arranged at an opening on the top surface of the box body, and the transmittances of 0.2-3 mu m of a solar radiation wave band and 8-13 mu m of an atmospheric window wave band reach 85-90%, so that most of solar radiation can be projected onto the heat collecting plate through the full-wave-band high-transmittance material film in the daytime, and heat radiated from the radiation refrigeration surface can be effectively dissipated to the outside space through the full-wave-band high-transmittance material film at night; in addition, the existence of the full-wave-band high-transmittance material film can also effectively reduce the convective heat transfer between the low-iron ultra-white glass and the heat collection plate core and the external environment, and enhance the heat preservation effect of the device.
4. The solar selective absorption coating is coated on the upper surface of the heat collection plate, the absorptivity of the solar selective absorption coating in a solar radiation wave band of 0.2-3 mu m is 90-95%, and the solar selective absorption coating has very low emissivity in other wave bands, so that most of solar radiation energy projected onto the heat collection plate can be absorbed, and the heat dissipated by the heat collection plate through outward radiation in an infrared wave band is reduced. The lower surface of the heat collecting plate is provided with a copper pipe, and circulating water enters the heat-preservation water tank after taking away heat absorbed by the heat collecting plate.
5. The invention is provided with three fluid channels: the copper pipe is used as a water flow channel in a daytime heat collection mode and provides domestic hot water for users; a heat-carrying air heat exchange cavity is formed between the lower-layer low-iron ultra-white glass and the heat collecting plate, so that hot air is provided for a user; the cavity between the two layers of low-iron ultra-white glass forms a water-air dual-purpose cold-carrying medium heat exchange cavity, so that cold water and cold air can be produced, and the cold load of the building can be reduced.
6. A distance is arranged between the full-wave-band high-transmittance material film and the upper-layer glass cover plate, so that an air interlayer is formed, and the heat conductivity coefficient of air in a closed state is 0.023W/m.K, so that the air interlayer can effectively reduce heat conduction and heat loss, and further plays a role in heat preservation.
Drawings
Figure 1-top view of the invention.
Fig. 2-schematic structural diagram of the present invention.
Fig. 3-the cross-sectional view of fig. 1.
Wherein: 1-a box body; 2-a metal tube; 3-a header; 4-heat collecting plate; 5-lower glass cover plate; 6-upper glass cover plate; 7-a glass fin; 8-full-wave band high-transmittance film; 9-radiation refrigeration film; 10-air interlayer; 11-hot water flow channel; 12-heat carrier air heat exchange chamber; 13-cold-carrying medium heat exchange cavity; 14-a cold water inlet; 15-hot water outlet; 16-a cold air inlet; 17-hot air outlet; 18-a cold carrier inlet; 19-outlet for cooling medium.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, 2 and 3, the dual-purpose flat solar heat collection and radiation refrigeration comprehensive utilization device for water and gas comprises a box body 1 with an open top surface, wherein a heat collection plate 4 is parallel to the top surface and the bottom surface of the box body 1, a plurality of parallel metal tubes 2 are uniformly distributed and arranged between the heat collection plate 4 and the bottom of the box body 1, all the metal tubes 2 are in contact with the heat collection plate 4 and the bottom of the box body 1, two ends of each metal tube 2 are respectively connected with the same header 3 vertical to the metal tubes and are communicated with the header 3, one end of each of the two headers 3 is closed, the other end of each header 3 extends to the outside of the box body, the outer end of one header 3 is a cold water inlet 14, and the outer end; the opening of the top surface of the box body 1 is provided with a full-wave band high-transmittance material film 8. Cold water enters one of the headers 3 from the cold water inlet 14 and then flows through the metal tubes 2, and all water in the metal tubes 2 exchanges heat with heat absorbed by the heat collecting plates 4 through the copper tubes to form hot water, and then flows out from the hot water outlet 15 to provide domestic hot water for users. The water flow passage formed by all the metal pipes 2 is a hot water flow passage 11. The metal pipe 2 is a copper pipe, and the copper pipe is good in heat conduction performance and beneficial to improving heat exchange efficiency.
Two glass cover plates parallel to the bottom surface of the box body are further arranged in the box body between the heat collecting plate 4 and the full-wave-band high-transmittance material film 8 from top to bottom, the two glass cover plates are respectively an upper layer glass cover plate 6 and a lower layer glass cover plate 5, and the upper surface of the upper layer glass cover plate 6 is covered with a radiation refrigeration film 9. The cavity between the two glass cover plates forms a cold-carrying medium heat exchange cavity 13, the side wall of the box body 1 is provided with a cold-carrying medium inlet 18 and a cold-carrying medium outlet 19, and the cold-carrying medium inlet 18 and the cold-carrying medium outlet 19 are respectively communicated with the cold-carrying medium cavity and are positioned on two opposite side walls of the box body. The cold carrying medium is water or air, hot water (hot air) enters the cold carrying medium heat exchange cavity 13, cold water (cold air) is formed through radiation refrigeration and is output from the cold carrying medium outlet 19, and the cold water (cold air) can be used for reducing the cold load of the building.
A heat-carrying air heat exchange cavity 12 is formed by a cavity between the heat collecting plate 4 and the lower glass cover plate 5, a cold air inlet 16 and a hot air outlet 17 are arranged on the side wall of the box body 1, and the cold air inlet 16 and the hot air outlet 17 are respectively communicated with the heat-carrying air heat exchange cavity 12 and are positioned on two opposite side walls on the box body 1. The cold air is heated after absorbing the heat of the heat collecting plate 4 through the heat-carrying air heat exchange cavity 12, and becomes hot air for heating.
The upper surface of the heat collection plate 4 is covered with a solar selective absorption coating, the absorptivity of the solar selective absorption coating in a solar heat utilization wave band of 0.2-3 mu m is more than 90%, and the emissivity of the solar selective absorption coating in a middle and far infrared wave band of more than 3 mu m is lower than 10%. The solar selective absorption coating material is a metal ceramic coating belt or a blue titanium coating, wherein the absorptivity of the blue titanium coating at a solar radiation waveband of 0.2-3 mu m is 90-95%. The solar selective absorption coating is arranged, so that most of solar radiation energy projected onto the heat collection plate can be absorbed, and the heat dissipated by the heat collection plate through the infrared band to the outside can be reduced.
The full-wave-band high-transmittance material film 8 is a polyethylene film, the transmittance of the film in a wave band of 0-25 mu m is more than 80%, and the transmittance of the film in a solar radiation wave band of 0.2-3 mu m and an atmospheric window wave band of 8-13 mu m is 85% -90%. Therefore, most solar radiation can be projected to the heat collecting plate through the full-wave-band high-transmittance material film 8 in the daytime, and heat radiated from the radiation refrigeration surface can be effectively dissipated to the outside space through the full-wave-band high-transmittance material film 8 at night.
The lower surface of the upper glass cover plate 6 is provided with a plurality of strip-shaped glass fins 7, and the glass fins 7 and the upper glass cover plate 6 are integrally formed. The arrangement increases the heat exchange area between the upper glass cover plate 6 and the cold carrier fluid, thereby improving the heat convection efficiency between the upper glass cover plate and the cold carrier fluid.
The upper layer glass cover plate 6 and the lower layer glass cover plate 5 are both made of low-iron ultra-white glass, the transmittance of the glass cover plates at the wave band of 0.2-3 mu m is more than 90%, the glass cover plates have a blocking effect on long-wave radiation, and a greenhouse effect can be formed. The lower-layer low-iron ultra-white glass is arranged, the transmittance of the main solar radiation wave band (0.2-3 mu m) reaches more than 91.5%, and the long-wave radiation has a blocking effect, so that most of solar radiation can be projected onto the heat collecting plate 4 through the low-iron ultra-white glass in the daytime, the long-wave radiation cannot be transmitted out, the long-wave radiation heat loss in the daytime is reduced, and the heat collecting effect is enhanced. The emissivity of the upper layer of low-iron ultra-white glass in a long wave radiation wave band reaches 94 percent, so that the high emissivity in the long wave band can be used for radiating heat to the outer space at night for refrigeration.
The radiation refrigeration film 9 is a polyethylene terephthalate film or a polyvinyl fluoride film, the emissivity in an atmospheric window wave band of 8-13 mu m is 80-90%, and the transmittance in other wave bands is 70-90%. Therefore, most solar radiation can be projected onto the heat collecting plate 4 through the radiation refrigeration film in the daytime, and the solar radiation can be refrigerated to the outer space by utilizing the high emissivity of the solar radiation at the waveband of 8-13 microns at night.
The box body 1 is made of a heat-insulating material, and the heat-insulating material is phenolic foam or rock wool. Although the top surface of the box body 1 is not provided with a heat insulation material, the full-wave-band high-transmittance material film 8 is arranged, so that the heat convection between the glass cover plate and the heat collection plate 4 and the external environment can be effectively reduced, and the heat insulation effect of the device is enhanced. Meanwhile, an air interlayer 10 is formed between the full-wave-band high-transmittance material film 8 and the upper-layer glass cover plate 6, and the heat conductivity coefficient of air in a closed state is 0.023W/m.K, so that the heat conduction and heat loss can be effectively reduced.
For better understanding of the present invention, the following is the working principle of the device:
when hot water is prepared in the daytime, the cold air inlet 16, the hot air outlet 17, the cold carrying medium inlet 18 and the cold carrying medium outlet 19 are closed, the cold water inlet 14 and the hot water outlet 15 are opened, cold water in the heat-preservation water tank flows in from the cold water inlet 14, the metal pipe 2 takes away heat absorbed by the heat collecting plate 4 and then flows into the heat-preservation water tank from the hot water outlet 15, and a cycle is completed.
When hot air is produced in daytime, the cold water inlet 14, the hot water outlet 15, the cold medium carrying inlet 18 and the cold medium carrying outlet 19 are closed, the cold air inlet 16 and the hot air outlet 17 are opened, cold air enters the heat carrying air heat exchange cavity 12 from the cold air inlet 16, heat of the heat collecting plate 4 is absorbed in the heat carrying air heat exchange cavity 12 to be changed into hot air, then the hot air flows out from the hot air outlet 17, and the obtained hot air can be used for room heating, drying of articles and the like.
When cold air is prepared at night, the cold water inlet 14, the hot water outlet 15, the cold air inlet 16 and the hot air outlet 17 are closed, the cold carrying medium inlet 18 and the cold carrying medium outlet 19 are opened, the hot air enters the cold carrying medium heat exchange cavity 13, heat is transferred to the radiation refrigerating film 9 in the cold carrying medium heat exchange cavity 13 and then changed into the cold air, the radiation refrigerating film 9 radiates the heat to the outer space in a radiation refrigerating mode, the cooled air is output from the cold carrying medium outlet 19, and the obtained cold air can be used for precooling fresh air or keeping vegetables and fruits and the like.
Similarly, when cold water is prepared at night, the cold water inlet 14, the hot water outlet 15, the cold air inlet 16 and the hot air outlet 17 are closed, the cold carrying medium inlet 18 and the cold carrying medium outlet 19 are opened, hot water enters the cold carrying medium heat exchange cavity 13, heat is transferred to the radiation refrigeration film 9 in the cold carrying medium heat exchange cavity 13 and then is changed into cold water, the radiation refrigeration film 9 radiates the heat to the outer space in a radiation refrigeration mode, cooled water flows out from the cold carrying medium outlet 19, and the obtained cold water can be directly used for room cooling or cold energy is stored for use in the daytime.
The invention can utilize water or air as heat transfer and cold carrying medium, fully utilizes day and night alternation to collect heat and radiate refrigeration, achieves comprehensive utilization of renewable energy sources to provide convenience for life of people, achieves the standard of the existing comprehensive utilization device, and has better heat preservation effect and better heat collection effect.
Finally, it should be noted that the above-mentioned examples of the present invention are only examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Variations and modifications in other variations will occur to those skilled in the art upon reading the foregoing description. Not all embodiments are exhaustive. All obvious changes and modifications of the present invention are within the scope of the present invention.
Claims (9)
1. The water-gas dual-purpose flat-plate type solar heat collection and radiation refrigeration comprehensive utilization device comprises a box body with an open top surface, wherein a heat collection plate is arranged in the box body, the heat collection plate is parallel to the top surface and the bottom surface of the box body, a plurality of parallel metal tubes are uniformly distributed and arranged between the heat collection plate and the bottom of the box body, all the metal tubes are in contact with the heat collection plate and the bottom of the box body, two ends of each metal tube are respectively connected with the same header tube perpendicular to the metal tubes and communicated with the header tube, one end of each two header tubes is closed, the other end of each two header tubes extends to the outside of the box body, the outer end of one; the uncovered department of box top surface is equipped with full wave band high transmittance material membrane, its characterized in that:
two glass cover plates parallel to the bottom surface of the box body are further arranged in the box body between the heat collecting plate and the full-wave-band high-transmittance material film from top to bottom, a cold-carrying medium heat exchange cavity is formed in a cavity between the two glass cover plates, a cold-carrying medium inlet and a cold-carrying medium outlet are formed in the side wall of the box body, and the cold-carrying medium inlet and the cold-carrying medium outlet are respectively communicated with the cold-carrying medium heat exchange cavity and are positioned on two opposite side walls of the box body; a heat-carrying air heat exchange cavity is formed by a cavity between the heat collecting plate and the lower glass cover plate, a cold air inlet and a hot air outlet are arranged on the side wall of the box body, and the cold air inlet and the hot air outlet are respectively communicated with the heat-carrying air heat exchange cavity and are positioned on two opposite side walls of the box body; the upper surface of the upper glass cover plate is covered with a radiation refrigeration film.
2. The water-gas flat-plate type solar heat collection and radiation refrigeration comprehensive utilization device as claimed in claim 1, wherein the upper surface of the heat collection plate is covered with a solar selective absorption coating, the absorptivity of the solar selective absorption coating in a solar heat utilization band of 0.2-3 μm is more than 90%, and the emissivity in a middle and far infrared band of more than 3 μm is less than 10%.
3. The water-gas flat-plate type solar heat collection and radiation refrigeration comprehensive utilization device as claimed in claim 2, wherein the solar selective absorption coating material is a metal ceramic coating band or a blue titanium coating.
4. The water-gas flat-plate type solar heat collection and radiation refrigeration comprehensive utilization device as claimed in claim 1, wherein the full-waveband high-transmittance material film is a polyethylene film, the transmittance in a waveband of 0-25 μm is more than 80%, and the transmittance in a solar radiation waveband of 0.2-3 μm and an atmospheric window waveband of 8-13 μm is 85% -90%.
5. The water-gas flat-plate type solar heat collecting and radiation refrigerating comprehensive utilization device as claimed in claim 1, wherein the lower surface of the upper glass cover plate is provided with a plurality of strip-shaped glass fins, and the glass fins are integrally formed with the upper glass cover plate.
6. The water-gas flat-plate type solar heat collection and radiation refrigeration comprehensive utilization device as claimed in claim 1, wherein the glass cover plate is made of low-iron ultra-white glass, has a transmittance of more than 90% in a wave band of 0.2-3 μm, has a blocking effect on long-wave radiation, and can form a greenhouse effect.
7. The water-gas flat-plate type solar heat collection and radiation refrigeration comprehensive utilization device is characterized in that the radiation refrigeration film is a polyethylene terephthalate film or a polyvinyl fluoride film, the emissivity in an atmospheric window waveband of 8-13 microns is 80-90%, and the transmittance in other wavebands is 70-90%.
8. The water-gas flat-plate type solar heat collection and radiation refrigeration comprehensive utilization device as claimed in claim 1, wherein the box body is made of a heat insulation material, and the heat insulation material is phenolic foam or rock wool.
9. The water-gas flat-plate type solar heat collection and radiation refrigeration comprehensive utilization device as claimed in claim 1, wherein the metal pipe is a copper pipe.
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| CN201910008289.4A CN109631416B (en) | 2019-01-04 | 2019-01-04 | Water-gas dual-purpose flat-plate solar heat collection and radiation refrigeration comprehensive utilization device |
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| CN201910008289.4A CN109631416B (en) | 2019-01-04 | 2019-01-04 | Water-gas dual-purpose flat-plate solar heat collection and radiation refrigeration comprehensive utilization device |
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| CN110608548B (en) * | 2019-10-21 | 2024-04-23 | 浙江耀伏能源管理有限公司 | Flat plate type ground space radiation cooler with air flow passage |
| CN112212397A (en) * | 2020-10-28 | 2021-01-12 | 重庆大学 | Solar heat storage floor radiation heating system |
| CN113587458B (en) * | 2021-06-16 | 2022-09-06 | 东南大学 | Device capable of simultaneously obtaining heat source from sun and cold source from deep space |
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| JP5375283B2 (en) * | 2009-04-07 | 2013-12-25 | ダイキン工業株式会社 | Refrigeration equipment |
| CN102338482A (en) * | 2010-07-26 | 2012-02-01 | 陈根其 | Solar heat collection device |
| CN102635972B (en) * | 2012-04-13 | 2013-04-17 | 太原理工大学 | Cold-storing type solar-energy spraying and compression coupling refrigerating device |
| CN103776196B (en) * | 2014-02-25 | 2016-03-30 | 中国科学技术大学 | A kind of solar energy heating and radiation refrigeration integrated application device |
| CN105241081B (en) * | 2015-11-03 | 2017-08-29 | 广东五星太阳能股份有限公司 | Composite parabolic optically focused collection radiator with thermal-arrest on daytime and nocturnal radiation refrigerating function |
| US11802999B2 (en) * | 2016-08-31 | 2023-10-31 | Riken | Light absorbing body, bolometer, infrared ray absorbing body, solar thermal power generating device, radiant cooling film, and method for manufacturing light absorbing body |
| CN108358463A (en) * | 2018-04-20 | 2018-08-03 | 深圳瑞凌新能源科技有限公司 | A kind of radiation cooling glass and preparation method thereof |
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