CN107883493A - Infrared radiation cooling system with closing refrigerating function - Google Patents
Infrared radiation cooling system with closing refrigerating function Download PDFInfo
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- CN107883493A CN107883493A CN201711128935.8A CN201711128935A CN107883493A CN 107883493 A CN107883493 A CN 107883493A CN 201711128935 A CN201711128935 A CN 201711128935A CN 107883493 A CN107883493 A CN 107883493A
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- refrigeration
- receiver
- cooling system
- sucrose
- infrared radiation
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0089—Systems using radiation from walls or panels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
- F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sustainable Energy (AREA)
- Building Environments (AREA)
Abstract
A kind of infrared radiation cooling system with closing refrigerating function, including high reflector layer（1）, strong infra-red radiation layer（2）, made of high printing opacity macromolecule polymeric material interlayer（3）, receiver（5）, charging pump and lower water solenoid valve（4）.Interlayer connects receiver, and receiver is equipped with refrigeration lock solution（6）, at least contain in lock solution of freezing and composition absorbed by force to the infra-red radiations of 8 to 13 micron wave lengths.The present invention in one side of the infrared radiation cooling system towards the outer space by adding the closed sandwich made of high printing opacity macromolecule polymeric material, and by interlayer outside receiver conveyed into closed sandwich refrigeration lock solution, realize summer cooling system, winter halt system refrigeration.Such as apply the present invention to building trade, the purpose to building summer refrigeration can be achieved.
Description
Technical field
The present invention relates to a kind of infrared radiation cooling system with closing refrigerating function, belong to refrigeration technology field.
Background technology
According to Planck blackbody radiation law, any temperature higher than absolute zero object all can in the form of an electromagnetic wave to
Extraneous radiant heat energy, object cause own temperature to reduce due to outside emittance, and here it is radiation to cool down.Stefan-ripple
Wurz is graceful to be pointed out, the total radiant power of black matrix is directly proportional to its power of absolute temperature 4, according to calculating, 1 square metre absolute black
Body gives off 460W emittance in 300K in all band., should if the black matrix is only radiated without absorbing energy from environment
Black matrix will reduce temperature with significant speed.In theory, radiation cooling can be used to develop also is not required to without electric energy
External energy Refrigeration Technique is relied on, this technology is exactly radiative cooling technology.
At present, radiative cooling technology solve the problems, such as two it is most basic after have significant progress.The two problems are：
First, how effectively heat to be launched in a manner of infra-red radiation；Second, actual radiative cooling system is outwardly
Also in absorptive thermal radiation and sunlight while radiant heat energy.At night, refrigerating system may be because the spoke absorbed in environment
Penetrate and reduce efficiency；Under the shining of sunlight on daytime, if to be more than its own outside for the heat radiation of the sun and environment absorbed
Heat radiation, the total effect of system will raise self-temperature, and not reach the purpose of refrigeration completely, it means that necessarily have efficient
Reflecting system, reflect sunlight and environment heat radiation.
2014, Stanford University Shanhui Fan professors research group achieved prominent when solving the problems, such as two above
Broken property progress, its work are published in《Nature》Vol 515, pp540-544 (27 November, 2014) are entitled
“Passive radiative cooling below ambient air temperature under direct
Sunlight ", with the film cycle of the different-thickness of two kinds of materials of silica and hafnium oxide totally seven layers are alternatively formed in text
Layer structure.This layer structure can not only will be up to 97% sunlight reflection, so as to avoiding due to by Exposure to Sunlight as far as possible
Heating, and it can outwardly be released energy by radiating the infrared ray of 8-13 micron wave lengths.8-13 micron wave lengths it is infrared
Line is the infrared window of an air, and the infrared ray of this wave band will not be absorbed by atmosphere, can be directly to lower up to temperature
The outer space.Experiment shows that, even if in the case of daytime and in direct sunlight, this layer structure remains able to be covered in
The temperature of object below it reduces by 5 degrees Celsius.This achievement in research first becomes the radiation refrigeration under periods of direct sunlight
Into possibility.The work to Shanhui Fan such as Xiaobo Yin of University of Colorado is improved, and is obtained more efficient honest and clean
Valency and the film that can be mass-produced, paper publishing is in March, 2017《Science》" Scalable- entitled on magazine
manufactured randomized glass-polymer hybrid metamaterial for daytime
radiative cooling”.The film is by polymethylpentene（TPX) transparent plastic is made, and they mix tiny in TPX
Glass microballoon, manufactured goods are pulled into about 50 microns of thick thin slices, then face is plated into silver, silver-plated one down, 96% sunshine
It will be reflected back by composite, meanwhile, heat is given off with the air infrared window space-ward of infrared particularly 8-13 microns
Can, the power of its radiation refrigeration is about 100W/M2.Specific radiant power with day and night and the intensity of the sun and not
Together.
Play what is cooled and save although theoretically this infrared radiation cooling system can be attached into the roof in house
Effect, but in fact the system most of regional and impracticable.Because, it is generally the case that house needs to reflect sun in summer
Light simultaneously cools, but needs sunlight to heat roofing to winter, people, but covers the room of this infrared radiation cooling system
Face can not only absorb sunlight in the winter time, and constantly from roofing extracting energy and throw to space, no matter in summer or winter
Season all freezes to house, and this system naturally there are significant deficiency.
The content of the invention
The object of the present invention is in order to improve infrared radiation cooling system, it is allowed to when summer etc. needing refrigeration that system can
To play a part of reflecting sunlight and play refrigeration by the infra-red radiation window of air, but low temperature season passes through pass in the winter time etc.
Its its refrigerating function of air infra-red radiation closed windows is closed so as to building heat preserving, the present invention discloses a kind of with closing refrigeration work(
The infrared radiation cooling system of energy.
Realize that technical scheme is as follows, a kind of infrared radiation cooling system with closing refrigerating function, including
High reflector layer and strong infra-red radiation layer, in addition to made of high printing opacity macromolecule polymeric material interlayer, receiver, charging pump and
Lower water solenoid valve；The system is disposed with high reflector layer, strong infrared spoke on the face in face of sunshine from bottom to upper strata
Penetrate layer and interlayer；The inlet of interlayer connects receiver by pipeline with charging pump；The liquid outlet of interlayer passes through pipeline and lower water
Magnetic valve connects receiver；Receiver is equipped with refrigeration lock solution；At least contain in the refrigeration lock solution to 8 to 13 microns
The infra-red radiation of wavelength absorbs by force composition.
It is described refrigeration lock solution composition be methanol, ethanol, isopropanol, ethylene glycol, sucrose, fructose, glucose it is water-soluble
Liquid；Or methanol, ethanol, isopropanol, ethylene glycol, sucrose, fructose, the mixture of glucose and salt solution.
The refrigeration lock solution is made up of sucrose and water；Wherein the weight/mass percentage composition of sucrose is between 2% to 40%, water
Percentage composition between 60% to 98%.
The refrigeration lock solution is made up of sucrose, water, ethylene glycol or salt；The weight/mass percentage composition of sucrose be 2% ~
40%, the weight/mass percentage composition of water is 60% ~ 96%, and the weight/mass percentage composition of ethylene glycol or salt is 2% ~ 4%.
The high printing opacity macromolecule polymeric material is high density polyethylene (HDPE)（HDPE）.
The high reflector layer is TiO2Film, CdS film, Ag films or aluminium film.
The strong infra-red radiation layer is polyvinyl chloride（PVC), polyvinyl fluoride（PVF), poly- 4- methylpentenes（TPX）Polymerization
Thing；Or titanium oxide（TiO2）、ZnO、BaSO4、MgO、LiF、ZrO2, silica inorganic matter microballon or film.
Infrared radiation cooling system of the present invention, during summer, after sunlight passes through high printing opacity macromolecule polymeric material, it is reaching
System is gone out by infrared radiation cooling systematic reflection during the high reflector layer of system, simultaneity factor through high printing opacity macromolecule polymeric material and
Atmospheric radiation window space-ward heat loss through radiation and make system refrigeration itself.When low temperature season temporarily, to pass through control valve or water
Pump, allow the refrigeration lock solution in receiver to flow into or pump is then in high printing opacity macromolecule polymeric material interlayer, refrigeration closing is molten
Liquid closes the infra-red radiation window of air by absorbing 8 to 13 microns of infra-red radiation, so as to prevent infra-red radiation to cause
Cooling system space-ward radiates, and halt system refrigeration continues to freeze in the winter time.When summer needing refrigeration, by solenoid valve control,
Refrigeration lock solution is allowed to flow into or be extracted into receiver.Raffinate and drying in high printing opacity macromolecule polymeric material interlayer are cleaned, it is red
External radiation refrigerating system is switched to refrigerating state again.
At least contain the infrared spoke to 8 to 13 micron wave lengths in the refrigeration lock solution of infrared radiation cooling system of the present invention
Penetrate strong absorption composition.Simultaneously because air in the infra-red radiation of 18 to 32 micron wave lengths has a weaker collateral radiation window, freezing
The inhibiting rate that freezes will be improved to the material that the infra-red radiation of 18 to 32 micron wave lengths has absorption as contained in lock solution.If system
Absorb composition such as carbon black containing sunlight in cold confining liquid can also improve building to sunlight assimilation effect so as to building in winter
Thing heats.It is infrared at 8 to 13 microns through experiment, water, methanol, ethanol, isopropanol, ethylene glycol, sucrose, fructose, glucose etc.
Wave band and 18 to 32 micron waves are with corresponding absworption peak, above-mentioned water and these monohydric alcohols, polyalcohol or polynary aldehyde alcohol
The water freezing existing infrared absorption of mixture can prevent winter again when, the Main Ingredients and Appearance of refrigeration confining liquid can be used as.Other salt
The aqueous solution such as NaCl, CaCl2The aqueous solution Deng salt also plays the role of antifreeze wave band infra-red radiation corresponding with absorption.All water-soluble
In liquid, unit mass sucrose is most strong in the accumulation infrared absorption of 8 to 13 microns of infrared bands and 18 to 32 micron wave lengths, simultaneously
There is certain antifreeze effect and safe, for the preferred composition for the confining liquid that freezes.The quality hundred of sucrose in the confining liquid that freezes
Divide content can be between 2% to 40%, the content of water is 60% to 98%.Second can also can be added according to the difference of region wherein
To reduce freezing point, refrigeration confining liquid composition at this moment is for glycol or salt：The weight/mass percentage composition of sucrose 2% to 40% it
Between, the percentage composition of water is between 60% to 96%, and ethylene glycol or salt content are between 2% to 40%.It can also be closed in refrigeration
Liquid adds the solar absorbers such as carbon black to improve the heat absorption function of building.
To reach the effect of high reflection and specific region high infrared radiation, described infra-red radiation material can be polyvinyl chloride
（PVC), polyvinyl fluoride（PVF), poly- 4- methylpentenes（TPX）Deng polymer or titanium oxide（TiO2）、ZnO、BaSO4、
MgO、LiF、ZrO2, the inorganic matter such as silica microballon or film；Described includes but is not limited to sunlight high reflection material
TiO2, CdS, Ag films or aluminium film.
The invention has the advantages that the present invention by infrared radiation cooling system towards the outer space one side add by
Closed sandwich made of high printing opacity macromolecule polymeric material, and by interlayer outside receiver conveyed into closed sandwich refrigeration envelope
Solution is closed, summer cooling system is realized, winter halt system refrigeration, such as applies the present invention to building trade, can be achieved to building
Build the purpose of thing summer refrigeration.
Brief description of the drawings
Fig. 1 is infrared radiation cooling system structure diagram of the present invention with closing refrigerating function；
In figure, 1 is strong reflector layer；2 be strong infra-red radiation layer；3 be interlayer；4 be magnetic valve；5 be receiver；6 be refrigeration closing
Liquid.
Embodiment
Embodiment 1
The present embodiment forms strong reflective and strong infra-red radiation system, is plating silverskin from bottom to upper strata, the polychlorostyrene on plating silverskin
Pvdf layer, the TiO for being embedded in polyvinyl chloride middle and upper part2.It is high density polyethylene (HDPE) on high reflective and high infrared radiation system
（HDPE）Manufactured interlayer, another attached receiver, there is refrigeration confining liquid in tank, the composition for the confining liquid that freezes is water-soluble for 15% sucrose
Liquid.The liquid level of receiver is lower than roofing.In receiver and high density polyethylene (HDPE)（HDPE）Respectively by upper water between manufactured interlayer
Two pipelines of pump and drainage valve connect respectively.Winter water pump and electromagnetic valve can be by 15% aqueous sucrose solutions in receiver
It is transported to polyethylene（HDPE）Between manufactured interlayer.In summer, valve opening door allows refrigeration confining liquid automatically to flow back to reservoir Cans,
Water service pump can be sent to roof, the remaining solute in interlayer is cleaned.Such device, in summer, because in interlayer
There is no aqueous sucrose solution, its plating silverskin and TiO2Material can not only reflect more than 95% sunray, the radiating of its infra-red radiation
Heat can also be unobstructedly radiated the outer space by material in the form of infrared ray, so that own temperature reduces, reach drop
The effect of temperature energy-conservation.During winter, as long as pumping enough aqueous sucrose solutions in interlayer, the latter can both absorb part solar energy
Improve own temperature, and because water and sucrose have strong absorption in 8 to 13 microns of infrared bands and 18 to 32 infrared bands
Peak, its greenhouse effects shield the outside irradiation space radiating of infrared radiation cooling system completely, and this causes the system in the winter time not
Excessive thermal loss can be caused.
Embodiment 2
When cold district uses the system in the winter time, refrigeration confining liquid should have heat absorption and anti-infrared used by the present embodiment
Radiation function, also there is preferable antifreeze function.In the present embodiment in high reflective and high infrared radiation system, from bottom to upper strata
It is configured to：Aluminium foil, the polyvinyl chloride carried out on aluminium foil, the hollow glass micropearl for being embedded in polyvinyl chloride middle and upper part.High anti-
It is high density polyethylene (HDPE) on light and high infrared radiation system（HDPE）Manufactured interlayer.Another installation receiver, receiver and height
Connected respectively by two different pipelines of charging pump and drainage valve between interlayer made of density polyethylene.There is refrigeration in tank
Confining liquid.The composition and mass ratio of refrigeration confining liquid are glucose 15%, ethylene glycol 15%, the solution of water 70%.Receiver is allowed to be in
The position higher than roofing.Opening valve if necessary can be by the aqueous solution automatic flowing in receiver to polyethylene（HDPE）It is made
Interlayer between, the confining liquid that will first freeze before arriving in summer is sent to receiver with water pump, then with running water to residual in interlayer
Remaining solute is cleaned.In summer because not having aqueous solution stop in interlayer, the system can not only reflect more than 95% sun
Light, heat freely can also be radiated the outer space by its infra-red radiation heat sink material in the form of infrared ray, so as to reach
To the effect of cooling energy-saving.In the winter time, enough refrigeration confining liquids are pumped in interlayer, the latter can both absorb part solar energy
Own temperature is improved, and because of water and glucose and ethylene glycol in 8 to 13 microns of infrared bands and 18 to 32 infrared bands
There is strong absworption peak, its greenhouse effects shields the outside irradiation space radiating of infrared radiation cooling system completely, and this causes this
System will not cause excessive thermal loss in the winter time.Meanwhile containing glucose 15%, ethylene glycol 20%, water 65% solution have it is relatively low
Freezing point, liquid still can be kept in 18 degrees below zero, avoid because freeze and volumetric expansion may caused by destroy it is poly-
The consequence of ethene interlayer.
Claims (4)
1. a kind of infrared radiation cooling system with closing refrigerating function, including high reflector layer and strong infra-red radiation layer, it is special
Sign is that the system also includes interlayer, receiver, charging pump and lower water power magnetic made of high printing opacity macromolecule polymeric material
Valve；The system is disposed with high reflector layer, strong infra-red radiation layer and folder on the face in face of sunshine from bottom to upper strata
Layer；The inlet of interlayer connects receiver by pipeline with charging pump；The liquid outlet of interlayer is connected by pipeline and lower water solenoid valve
Connect receiver；Receiver is equipped with refrigeration lock solution；At least contain in the refrigeration lock solution to the red of 8 to 13 micron wave lengths
External radiation absorbs by force composition.
2. the infrared radiation cooling system according to claim 1 with closing refrigerating function, it is characterised in that the system
Cold seal closes the aqueous solution that solution composition is methanol, ethanol, isopropanol, ethylene glycol, sucrose, fructose, glucose；Or methanol, second
Alcohol, isopropanol, ethylene glycol, sucrose, fructose, the mixture of glucose and salt solution.
3. the infrared radiation cooling system according to claim 2 with closing refrigerating function, it is characterised in that the system
Cold lock solution is made up of sucrose and water；Between 2% to 40%, the percentage composition of water exists the wherein weight/mass percentage composition of sucrose
Between 60% to 98%.
4. the infrared radiation cooling system according to claim 2 with closing refrigerating function, it is characterised in that the system
Cold lock solution is made up of sucrose, water, ethylene glycol or salt；The weight/mass percentage composition of sucrose is 2% ~ 40%, the quality percentage of water
Content is 60% ~ 96%, and the weight/mass percentage composition of ethylene glycol or salt is 2% ~ 4%.
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| CN201711128935.8A CN107883493B (en) | 2017-11-15 | 2017-11-15 | Infrared radiation refrigerating system with closed refrigerating function |
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| CN201711128935.8A CN107883493B (en) | 2017-11-15 | 2017-11-15 | Infrared radiation refrigerating system with closed refrigerating function |
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| CN107883493B CN107883493B (en) | 2020-12-08 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109631409A (en) * | 2019-01-19 | 2019-04-16 | 天津大学 | The passive type radiation-cooled structure and cooling means of high temperature resistant high IR transmitting |
| CN109631408A (en) * | 2019-01-19 | 2019-04-16 | 天津大学 | Biodegradable infrared emission passive type radiation-cooled structure and cooling means |
| CN109668347A (en) * | 2019-01-19 | 2019-04-23 | 天津大学 | Classifying porous passive type radiation-cooled structure and cooling means based on biological plastics |
| CN109708336A (en) * | 2019-01-19 | 2019-05-03 | 天津大学 | Classifying porous passive type radiation-cooled structure and cooling means based on reverse phase synthesis |
| WO2020140082A1 (en) * | 2018-12-27 | 2020-07-02 | SkyCool Systems, Inc. | Cooling panel system |
| JPWO2020195743A1 (en) * | 2019-03-27 | 2021-04-08 | 大阪瓦斯株式会社 | Radiative cooling device and radiative cooling method |
| US11841171B2 (en) | 2019-04-17 | 2023-12-12 | SkyCool Systems, Inc. | Radiative cooling systems |
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| 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 |
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| WO2020140082A1 (en) * | 2018-12-27 | 2020-07-02 | SkyCool Systems, Inc. | Cooling panel system |
| US11835255B2 (en) | 2018-12-27 | 2023-12-05 | SkyCool Systems, Inc. | Cooling panel system |
| CN109631409A (en) * | 2019-01-19 | 2019-04-16 | 天津大学 | The passive type radiation-cooled structure and cooling means of high temperature resistant high IR transmitting |
| CN109631408A (en) * | 2019-01-19 | 2019-04-16 | 天津大学 | Biodegradable infrared emission passive type radiation-cooled structure and cooling means |
| CN109668347A (en) * | 2019-01-19 | 2019-04-23 | 天津大学 | Classifying porous passive type radiation-cooled structure and cooling means based on biological plastics |
| CN109708336A (en) * | 2019-01-19 | 2019-05-03 | 天津大学 | Classifying porous passive type radiation-cooled structure and cooling means based on reverse phase synthesis |
| JPWO2020195743A1 (en) * | 2019-03-27 | 2021-04-08 | 大阪瓦斯株式会社 | Radiative cooling device and radiative cooling method |
| US11988465B2 (en) | 2019-03-27 | 2024-05-21 | Osaka Gas Co., Ltd. | Radiative cooling device and radiative cooling method |
| US11841171B2 (en) | 2019-04-17 | 2023-12-12 | SkyCool Systems, Inc. | Radiative cooling systems |
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| Publication number | Publication date |
|---|---|
| CN107883493B (en) | 2020-12-08 |
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