CN103486760A - Solar heat collection-radiation refrigeration integration device - Google Patents
Solar heat collection-radiation refrigeration integration device Download PDFInfo
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Abstract
The invention discloses a solar heat collection-radiation refrigeration integration device based on a gravity annular heat pipe and a thermal pressure ventilation principle. The solar heat collection-radiation refrigeration integration device mainly comprises a heat storage device, a heat collection and refrigeration mechanism, a cold consuming space, an air inlet pipe and an air outlet pipe. The solar heat collection-radiation refrigeration integration device absorbs solar irradiation in the daytime to obtain energy, the heat storage device and the heat collection and refrigeration mechanism form a solar heat collection mode; the refrigerating capacity is obtained through space irradiation at night, the heat collection and refrigeration mechanism and the cold consuming space form an irradiation refrigerating mode; no power input and control equipment are not needed under the two running modes, self-adaptive switching of the two modes can be realized, and the demand of heat supply and cold supply by people is met, so that the consumption on conventional energy resources is reduced; the solar heat collection-radiation refrigeration integration device is simple and easy to run, maintain and operate due to an adopted self-adaptive switching working mode, and is lower in initial cost investment so as to be beneficial to popularization and application.
Description
Technical field
The invention belongs to the field of energy utilization technology, be specifically related to the total energy approach device of solar energy heating and space radiation refrigeration.
Background technology
By day the thermal-arrest utilization of solar energy is studied widely at present, its heat utilization mode mainly comprises utilization and the thermal water utilization of hot-air: as a kind of plate type solar air collector (CN202419968U), this device can utilize the solar energy heating air, reduce the heat waste of heat collector simultaneously, improve collecting efficiency; Plate integral type solar water heater (CN102278827A) and for example, this device can pass through the flat plate collector heat hot water.In addition, also have and not only can add hot-air but also can heat hot water can meet the plate type solar photo voltaic hot water hot-air compound heat collector (CN20130021296.0) of assisting need for electricity simultaneously.Simultaneously, according to the space radiation refrigeration principle, evening, ground object can carry out radiation heat transfer through atmosphere and space outerpace in 8～13 micron waveband scopes, made object temperature reduce the effect that reaches radiation refrigeration.As a kind of radiation cooling device (CN200920209144.2) is exactly the device of radiation refrigeration that utilizes the principle design of radiation refrigeration.
But the device of solar thermal utilization and radiation refrigeration comprehensive utilization in evening is not studied widely by daytime, the active loop structure of the many employings of the EGR of solar energy heating circulation simultaneously and radiation refrigeration, this has not only increased power consumption, also is not easy to operation simultaneously.If design a kind of solar radiation acquisition heat that both can absorb by day, radiation refrigeration obtains cold at night again, thermal-arrest integration unit simultaneously that do not need power input and control appliance, just can meet the dual requirements of people for heat supply and cooling, there is good using value and promotional value.
Summary of the invention
In order to solve above-mentioned solar energy heating and the radiation refrigeration mentioned in conjunction with the problem of utilizing, the invention provides a kind of integration unit of the solar energy heating-radiation refrigeration based on gravity annular heat pipe and Ventilation principle.
The thermal-arrest refrigeration mechanism that integration unit of the present invention comprises absorbs by day solar radiation and obtains heat, with heat-storing device, forms the thermal-arrest mode cycle; The thermal-arrest refrigeration mechanism obtains cold by radiation refrigeration at night, and forms the refrigeration mode circulation with cold space.According to gravity annular heat pipe and Ventilation principle, thermal-arrest pattern and refrigeration mode are all inputted and control appliance without extra power when operation, and two kinds of operational modes can realize the self adaptation switching.
Concrete structural design scheme is as follows:
A kind of integration unit of solar energy heating-radiation refrigeration comprises thermal-arrest refrigeration mechanism 2, and described thermal-arrest refrigeration mechanism 2 comprises substrate 12, a side of described substrate 12 uniform heat pipe 7; The two ends of uniform heat pipe 7 connect respectively the first collector 4 and the second collector 8, in uniform heat pipe 7, the first collector 4 and the second collector 8, are filled with heat-pipe working medium, and uniform heat pipe 7 forms the evaporation ends of heat pipe circuit; Be provided with the above heat exchange fin 9 of a slice between adjacent heat pipe 7; Be covered with flat box-like thermal insulator 10 on one side of the substrate 12 corresponding with heat pipe 7, thermal insulator 10 two ends corresponding with heat pipe 7 length directions offer respectively the air flow channel interface, make between substrate 12 and thermal insulator 10 to form air flow channel 6; The top, another side of substrate 12 is provided with transparent cover plate 11, is provided with gap between transparent cover plate 11 and substrate 12 and forms cavity, and the surface of the substrate 12 corresponding with transparent cover plate 11 is provided with composite layer 13; Described the first collector 4 is connecting a upper lateral part of heat-storing device 1, and the second collector 8 is being communicated with the side lower part with heat-storing device 1; The condensation end that described heat-storing device 1 is heat pipe circuit, be positioned at the top of thermal-arrest refrigeration mechanism 2, with uniform heat pipe 7, the first collector 4 and the second collector 8, forms thermal-arrest mode cycle loops; One end of described air flow channel 6 is communicated with blast pipe 5, and the other end is communicated with discharge pipe 14, and blast pipe 5 and discharge pipe 14 are communicated with respectively with cold space 3; The cold space 3 of described use is positioned at the below of thermal-arrest refrigeration mechanism 2, and forms the refrigeration mode closed circuit in air flow channel 6, blast pipe 5 and discharge pipe 14.
Be provided with air heat-exchange fin 9 between adjacent heat pipe 7.
The material of thermal insulator 10 is polyurethane foam or rock wool.
The material of transparent cover plate 11 is at the spectral band of solar radiation and infrared band material of the good transmitance of tool all.
The described spectral band in solar radiation and the infrared band all material of the good transmitance of tool are polyethylene film.
The material of composite layer 13 is the selective emission composite that absorbs, and described selective absorption emission composite is to deceive cadmium or spraying polytetrafluoroethylene film or polyester film above blue titanium coating; It is efficient absorption solar radiation acquisition heat by day, obtains cold by radiation refrigeration at night.
The periphery of thermal insulator 10 extends to the another side of substrate 12, and the periphery of transparent cover plate 11 is connected with the peripheral sealing of thermal insulator 10 respectively.
Between transparent cover plate 11 and substrate 12, spacing is 10～15mm.
Described heat-storing device 1 is heat storage water tank, is provided with radiator coil tube in heat storage water tank, and the two ends of radiator coil tube are being communicated with respectively the first collector 4 and the second collector 8.
Useful technique effect of the present invention embodies in the following areas:
(1) apparatus of the present invention are by day during the solar energy heating mode operation, form the interior air themperature of air flow channel 6 between substrate 12 and thermal insulator 10 higher than the air themperature with cold space 3, according to the Ventilation principle, air in air flow channel 6 with air with cold space 3 in stable state, the air circulation heat exchange is suppressed, and heat exchange does not occur;
(2) apparatus of the present invention are at night during the radiation refrigeration mode operation, uniform heat pipe 7(heat pipe circuit evaporation ends on substrate 12) temperature is lower than heat-storing device 1(heat pipe circuit condensation end), according to the thermal diode characteristic of gravity assisted heat pipe, the heat collector tube pattern is in automatic stop condition;
(3) apparatus of the present invention by day under solar energy heating operation and evening radiation refrigeration operational mode without extra power input and control appliance, both can realize that self adaptation switched.
The present invention is a kind of solar energy heating based on gravity annular heat pipe and Ventilation principle-radiation refrigeration integration unit.This device can be realized the double effects of solar energy heating and radiation refrigeration, can meet people for the dual requirements for the cold-peace heat supply, thereby reduce traditional energy resource consumption; The mode of operation of self adaptation switching makes the operation and maintenance operation of device simple and easy, and lower first cost investment is conducive to applying of this device.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The part sectioned view that Fig. 2 is thermal-arrest refrigeration mechanism in Fig. 1.
The partial perspective cutaway view that Fig. 3 is the thermal-arrest refrigeration mechanism.
The cross section partial sectional view that Fig. 4 is Fig. 3.
Sequence number in upper figure: heat-storing device 1, thermal-arrest refrigeration mechanism 2, with cold space 3, the first collector 4, blast pipe 5, air flow channel 6, heat pipe 7, the second collector 8, heat exchange fin 9, thermal insulator 10, transparent cover plate 11, substrate 12, composite layer 13
, discharge pipe 14.
The specific embodiment
Below in conjunction with accompanying drawing, by embodiment, the present invention is further described.
Referring to Fig. 1, Fig. 2 and Fig. 3, a kind of integration unit of solar energy heating-radiation refrigeration comprises thermal-arrest refrigeration mechanism 2, and thermal-arrest refrigeration mechanism 2 comprises substrate 12, a side of described substrate 12 uniform heat pipe 7; The two ends of uniform heat pipe 7 connect respectively the first collector 4 and the second collector 8, in uniform heat pipe 7, the first collector 4 and the second collector 8, are filled with heat-pipe working medium, and uniform heat pipe 7 forms the evaporation ends of heat pipe circuit; Be provided with three heat exchange fins 9 between adjacent heat pipe 7; Be covered with flat box-like thermal insulator 10 on one side of the substrate 12 corresponding with heat pipe 7, the material of thermal insulator 10 is polyurethane foam.Thermal insulator 10 two ends corresponding with heat pipe 7 length directions offer respectively the air flow channel interface, make between substrate 12 and thermal insulator 10 to form air flow channel 6; Referring to Fig. 3 and Fig. 4, the another side of substrate 12 top is provided with transparent cover plate 11, and the material of transparent cover plate 11 is at the spectral band of solar radiation and infrared band material of the good transmitance of tool all, is specially polyethylene film.Be provided with gap between transparent cover plate 11 and substrate 12 and form cavity, between transparent cover plate 11 and substrate 12, spacing is 12mm.The periphery of thermal insulator 10 extends to the another side of substrate 12, and the periphery of transparent cover plate 11 is connected with the peripheral sealing of thermal insulator 10 respectively.
The surface of the substrate 12 corresponding with transparent cover plate 11 is provided with composite layer 13; The material of composite layer 13 is the selective emission composite that absorbs, what at black cadmium or above blue titanium coating, spraying polytetrafluoroethylene film or polyester film formed; It is efficient absorption solar radiation acquisition heat by day, obtains cold by radiation refrigeration at night.
Described the first collector 4 is connecting a upper lateral part of heat-storing device 1, and the second collector 8 is being communicated with the side lower part with heat-storing device 1; Heat-storing device 1 is heat storage water tank, is provided with radiator coil tube in heat storage water tank, and the two ends of radiator coil tube are being communicated with respectively the first collector 4 and the second collector 8; The condensation end that heat-storing device 1 is heat pipe circuit, be positioned at the top of thermal-arrest refrigeration mechanism 2; Uniform heat pipe 7, the first collector 4, the second collector 8 and heat-storing device 1 form thermal-arrest mode cycle loop; One end of described air flow channel 6 is communicated with blast pipe 5, and the other end is communicated with discharge pipe 14, and blast pipe 5 and discharge pipe 14 are communicated with respectively with cold space 3; The cold space 3 of described use is positioned at the below of thermal-arrest refrigeration mechanism 2, and forms the refrigeration mode closed circuit in air flow channel 6, blast pipe 5 and discharge pipe 14.
Operation principle of the present invention is as follows:
The composite layer 13 that has selective absorption-emission characteristics daytime absorbs the solar irradiation thermal-arrest, then transfer heat to substrate 12 heat pipe 7 behind, heat-pipe working medium is pooled to first collector 4 at top at heat pipe 7 endothermic gasifications, then enter heat-storing device 1, reenter the second collector 8 of bottom under Action of Gravity Field at the cooled liquid refrigerant of heat-storing device 1 heat exchange, then enter substrate heat pipe 7 behind, complete the thermal-arrest mode cycle.Its closed circuit filled arrows direction as shown in Figure 1.
The composite layer 13 that has selective absorption-emission characteristics evening can carry out the radiation heat transfer refrigeration with outer space, composite layer 13 obtains cold, the temperature of substrate 12 reduces, the air themperature of the air flow channel 6 of substrate 12 is lower than the air themperature with cold space 3, according to the Ventilation principle, air themperature in air flow channel 6 with by the temperature difference of cold space 3 interior air themperatures during over critical value, the upper layer of air that temperature is larger than low-density down flows, the lower layer of air that the temperature higher density is less up flows, and completes the refrigeration mode circulation.Its closed circuit hollow arrow direction as shown in Figure 1.
Solar energy heating pattern and radiation refrigeration pattern can realize the self adaptation switching, by day during the solar energy heating mode operation, air themperature in substrate 12 behinds is higher than the air themperature with cold space 3, according to the Ventilation principle, the air of air flow channel 6 with the air in cold space 3 in stable state, the air circulation heat exchange is suppressed, and heat exchange does not occur; At night during the radiation refrigeration mode operation, the heat pipe 7(heat pipe circuit evaporation ends at substrate 12 backs) heat-pipe working medium temperature is lower than heat-storing device 1(heat pipe circuit condensation end), according to the thermal diode characteristic of gravity assisted heat pipe, the heat collector tube pattern is in automatic stop condition.
Claims (9)
1. the integration unit of a solar energy heating-radiation refrigeration, it is characterized in that: comprise thermal-arrest refrigeration mechanism (2), described thermal-arrest refrigeration mechanism (2) comprises substrate (12), a side of described substrate (12) uniform heat pipe (7); The two ends of uniform heat pipe (7) connect respectively the first collector (4) and the second collector (8), in uniform heat pipe (7), the first collector (4) and the second collector (8), are filled with heat-pipe working medium, and uniform heat pipe (7) forms the evaporation ends of heat pipe circuit; Be provided with the above heat exchange fin (9) of a slice between adjacent heat pipe (7); Be covered with flat box-like thermal insulator (10) on one side of the substrate (12) corresponding with heat pipe (7), thermal insulator (10) two ends corresponding with heat pipe (7) length direction offer respectively the air flow channel interface, make to form air flow channel (6) between substrate (12) and thermal insulator (10); The top, another side of substrate (12) is provided with transparent cover plate (11), is provided with gap between transparent cover plate (11) and substrate (12) and forms cavity, and the surface of the substrate (12) corresponding with transparent cover plate (11) is provided with composite layer (13); Described the first collector (4) is connecting a upper lateral part of heat-storing device (1), and the second collector (8) is being communicated with and a side lower part of heat-storing device (1); The condensation end that described heat-storing device (1) is heat pipe circuit, be positioned at the top of thermal-arrest refrigeration mechanism (2), with uniform heat pipe (7), the first collector (4) and the second collector (8), forms thermal-arrest mode cycle loop; One end of described air flow channel (6) is communicated with blast pipe (5), and the other end is communicated with discharge pipe (14), and blast pipe (5) and discharge pipe (14) are communicated with respectively with cold space (3); The cold space of described use (3) is positioned at the below of thermal-arrest refrigeration mechanism (2), and forms the refrigeration mode closed circuit in air flow channel (6), blast pipe (5) and discharge pipe (14).
2. the integration unit of a kind of solar energy heating-radiation refrigeration according to claim 1, is characterized in that: be provided with air heat-exchange fin (9) between adjacent heat pipe (7).
3. the integration unit of a kind of solar energy heating-radiation refrigeration according to claim 1, it is characterized in that: the material of thermal insulator (10) is polyurethane foam or rock wool.
4. the integration unit of a kind of solar energy heating-radiation refrigeration according to claim 1 is characterized in that: the material of transparent cover plate (11) is the spectral band in solar radiation and infrared band material of the good transmitance of tool all.
5. the integration unit of a kind of solar energy heating-radiation refrigeration according to claim 4, it is characterized in that: the described spectral band in solar radiation and the infrared band all material of the good transmitance of tool are polyethylene film.
6. the integration unit of a kind of solar energy heating-radiation refrigeration according to claim 1, it is characterized in that: the material of composite layer (13) is for selectively absorbing the emission composite, and described selective absorption emission composite is black cadmium or sprays polytetrafluoroethylene film or polyester film above blue titanium coating; It is efficient absorption solar radiation acquisition heat by day, obtains cold by radiation refrigeration at night.
7. according to the integration unit of claim 1 or 4 or 6 described a kind of solar energy heating-radiation refrigerations, it is characterized in that: the periphery of thermal insulator (10) extends to the another side of substrate (12), and the periphery of transparent cover plate (11) is connected with the peripheral sealing of thermal insulator (10) respectively.
8. according to the integration unit of claim 1 or 4 or 6 described a kind of solar energy heating-radiation refrigerations, it is characterized in that: between transparent cover plate (11) and substrate (12), spacing is 10～15mm.
9. the integration unit of a kind of solar energy heating-radiation refrigeration according to claim 1, it is characterized in that: described heat-storing device (1) is heat storage water tank, be provided with radiator coil tube in heat storage water tank, the two ends of radiator coil tube are being communicated with respectively the first collector (4) and the second collector (8).
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776196A (en) * | 2014-02-25 | 2014-05-07 | 中国科学技术大学 | Device with integrated application of solar heat collection and radiation refrigeration |
| CN105245184A (en) * | 2015-11-03 | 2016-01-13 | 广东五星太阳能股份有限公司 | Flat-plate photovoltaic-thermal comprehensive utilization device with night radiation refrigeration function |
| CN105957912A (en) * | 2016-07-01 | 2016-09-21 | 中国科学技术大学 | Multifunctional spectrum selective encapsulation material |
| CN107883493A (en) * | 2017-11-15 | 2018-04-06 | 华东交通大学 | Infrared radiation cooling system with closing refrigerating function |
| CN108507227A (en) * | 2018-04-20 | 2018-09-07 | 深圳瑞凌新能源科技有限公司 | A kind of cooling water system using radiation refrigeration |
| CN110762663A (en) * | 2019-10-14 | 2020-02-07 | 珠海格力电器股份有限公司 | PVT composite set and air conditioner based on night radiation and dew point evaporative cooling |
| CN113136980A (en) * | 2020-01-20 | 2021-07-20 | 上海住总工程材料有限公司 | Wall unit and wall |
| CN113720027A (en) * | 2021-09-06 | 2021-11-30 | 中国科学院广州能源研究所 | Renewable deep space energy efficient conversion cooling, heating and power supply device |
| CN113899109A (en) * | 2021-11-16 | 2022-01-07 | 南京索乐优节能科技有限公司 | Efficient integrated system for medium-temperature heating and sky radiation refrigeration by utilizing solar radiation |
| US12126302B2 (en) | 2021-09-06 | 2024-10-22 | Guangzhou Institute Of Energy Conversion, Chinese Academy Of Sciences | Device for supplying cold energy, heat energy and electrical energy by efficiently converting renewable deep-space energies |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110762663A (en) * | 2019-10-14 | 2020-02-07 | 珠海格力电器股份有限公司 | PVT composite set and air conditioner based on night radiation and dew point evaporative cooling |
| CN113136980A (en) * | 2020-01-20 | 2021-07-20 | 上海住总工程材料有限公司 | Wall unit and wall |
| CN113720027A (en) * | 2021-09-06 | 2021-11-30 | 中国科学院广州能源研究所 | Renewable deep space energy efficient conversion cooling, heating and power supply device |
| WO2022160780A1 (en) * | 2021-09-06 | 2022-08-04 | 中国科学院广州能源研究所 | Device for conducting cooling, heating and power supply by means of efficient conversion of renewable deep-space energy |
| US12126302B2 (en) | 2021-09-06 | 2024-10-22 | Guangzhou Institute Of Energy Conversion, Chinese Academy Of Sciences | Device for supplying cold energy, heat energy and electrical energy by efficiently converting renewable deep-space energies |
| CN113899109A (en) * | 2021-11-16 | 2022-01-07 | 南京索乐优节能科技有限公司 | Efficient integrated system for medium-temperature heating and sky radiation refrigeration by utilizing solar radiation |
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