CN109906840A - A kind of radiation refrigeration curtain - Google Patents
A kind of radiation refrigeration curtain Download PDFInfo
- Publication number
- CN109906840A CN109906840A CN201910129920.6A CN201910129920A CN109906840A CN 109906840 A CN109906840 A CN 109906840A CN 201910129920 A CN201910129920 A CN 201910129920A CN 109906840 A CN109906840 A CN 109906840A
- Authority
- CN
- China
- Prior art keywords
- radiation refrigeration
- layer
- item
- radiation
- curtain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
The invention discloses a kind of radiation refrigeration curtains, multiple film items including weave frame and in weave frame, at least partly film item includes radiation refrigeration layer, radiation refrigeration layer includes resin and the radiation refrigeration body being dispersed in resin, and emissivity of the radiation refrigeration layer in 7 μm~14 μ m wavelength ranges is 70%~100%.Radiation refrigeration curtain of the invention is light, bending resistance is good, mounting means is diversified, when being cooled down, it is laid on outside object to be cooled down or space, and make radiation refrigeration layer towards outside, radiation refrigeration layer by the thermal energy of its own in the form of 7~14 μm of electromagnetic waves by " atmospheric window " be discharged into temperature close to absolute zero external space, to make own temperature reduce, due to the presence of the temperature difference, heat in object to be cooled down or space is constantly transmitted to the lower radiation refrigeration layer of temperature, the final cooling realized to object or space.And when not needing to be cooled down, radiation refrigeration curtain is packed up.
Description
Technical field
The present invention relates to a kind of radiation refrigeration curtains.
Background technique
Currently, greenhouse is widely used in the fields such as fruits and vegetables, flowers, cultivation.Greenhouse can be played in weather cold
The effect of heat preservation avoids animals and plants frostbite in canopy, and still, during the broiling summer, canopy temperature is excessively high, also can be to dynamic in canopy
Plant damages.When ambient temperature is higher, how to guarantee that there is suitable temperature in greenhouse, is to need what is solved to ask at present
Topic.
In the prior art, it is some be by increasing shading system on greenhouse, to reduce greenhouse room temperature, but this
Kind of mode cooling effect is limited, and when light is blocked excessive, also will affect the normal growth of animals and plants.There are also it is some be
Increase ventilating system on greenhouse to reduce greenhouse room temperature, but if outdoor temperature is inherently relatively high, using ventilation
The effect that mode cools down is not obvious.
Summary of the invention
For overcome the deficiencies in the prior art, it the purpose of the present invention is to provide a kind of radiation refrigeration curtain, can be applied to
Outside greenhouse roof, passively cooled down to greenhouse.
The purpose of the present invention adopts the following technical scheme that realization:
A kind of radiation refrigeration curtain, multiple film items including weave frame and in the weave frame, at least portion
Point film item includes radiation refrigeration layer, and the radiation refrigeration layer includes resin and the radiation refrigeration that is dispersed in the resin
Body, emissivity of the radiation refrigeration layer in 7 μm~14 μ m wavelength ranges are 70%~100%.
Further, multiple film items are side by side or compartment of terrain is threaded through in the weave frame, the table of each film item
Area accounts for the 20%~100% of the radiation refrigeration curtain total surface area.
Further, the visible light transmittance of the radiation refrigeration layer be greater than 50%, the radiation refrigeration layer with a thickness of
10 μm~1000 μm.
Further, at least partly described film item includes reflecting layer, and the reflecting layer is in 300nm~2500nm wave-length coverage
Interior reflectivity is 20%~100%.
Further, at least partly described film item includes the radiation refrigeration layer and is arranged in the radiation refrigeration layer one
The reflecting layer of side, reflectivity of the reflecting layer in 300nm~2500nm wave-length coverage are 20%~100%.
Further, the reflecting layer includes metal layer and/or ceramic layer, the reflecting layer with a thickness of 5nm~
2000nm。
Further, the reflecting layer be the stratiform resin with foam structure, the reflecting layer with a thickness of 10 μm~
400μm。
Further, multiple film items are respectively light-transmission type membrane item and reflection-type film item, the light-transmission type membrane item packet
The radiation refrigeration layer is included, the visible light transmittance of the light-transmission type membrane item is greater than 50%, and the reflection-type film item includes described
Radiation refrigeration layer and the reflecting layer that radiation refrigeration layer side is arranged in, the reflection-type film item is in 300nm~2500nm
Reflectivity in wave-length coverage is 20%~100%.
Further, the thermal absorptivity of the radiation refrigeration curtain is 2~60%.
Further, the average-size of the radiation refrigeration body is 10nm~30 μm, and the radiation refrigeration body is selected from following
It is one or more: silica, titanium dioxide, silicon carbide, calcium carbonate, zinc oxide, aluminium oxide, barium sulfate.
Compared with prior art, light, bending resistance that the beneficial effects of the present invention are: radiation refrigeration curtains of the invention
Good, mounting means diversification, when being cooled down, is laid on outside object to be cooled down or space, and make radiation refrigeration layer
Towards outside, the thermal energy of its own is discharged into temperature by " atmospheric window " in the form of 7~14 μm of electromagnetic waves by radiation refrigeration layer
The external space close to absolute zero is spent, to make own temperature reduce, due to the presence of the temperature difference, in object to be cooled down or space
Heat be constantly transmitted to the lower radiation refrigeration layer of temperature, the final cooling realized to object or space.And do not need into
When row cooling, radiation refrigeration curtain is packed up.
Detailed description of the invention
Fig. 1 is the schematic diagram of one embodiment of radiation refrigeration curtain of the invention；
Fig. 2 is the schematic diagram of one embodiment of film item of the invention；
Fig. 3 is the schematic diagram of another embodiment of film item of the invention；
Fig. 4 is the schematic diagram of another embodiment of radiation refrigeration curtain of the invention；
Fig. 5 is the schematic diagram of the further embodiment of radiation refrigeration curtain of the invention；
Fig. 6 is the schematic diagram of the further embodiment of film item of the invention；
In figure: 1, weave frame；2, film item；201, light-transmission type membrane item；202, reflection-type film item；211, radiation refrigeration layer；
212, reflecting layer；221, base；222, reflecting layer.
Specific embodiment
In the following, being described further in conjunction with specific embodiment to the present invention, it should be noted that is do not collided
Under the premise of, new embodiment can be formed between various embodiments described below or between each technical characteristic in any combination.
In the description of the present invention, it should be noted that " transverse direction ", " vertical if any term " center " for the noun of locality
To ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top",
The indicating positions such as "bottom", "inner", "outside", " clockwise ", " counterclockwise " and positional relationship are orientation based on the figure or position
Relationship is set, the narration present invention is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It constructs and operates with specific orientation, with particular orientation, should not be understood as limiting specific protection scope of the invention.
It should be noted that term " includes " in the description and claims of this application and " having " and they
Any deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, being
System, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or
For the intrinsic other step or units of these process, methods, product or equipment.
The present invention " atmospheric window " mentioned below refers to: atmosphere has different transmissions to the electromagnetic wave of different wave length
Rate, the higher wave band of transmissivity are known as " atmospheric window ".Wherein the atmospheric window of 7~14 mu m wavebands is that researcher is most interested
, because the black body radiation under room temperature is concentrated mainly on this section.Radiation refrigeration body described in the present invention can be by self heat
In the form of 7~14 μm of electromagnetic waves by " atmospheric window " be discharged into temperature close to absolute zero external space, to reach
The purpose of itself cooling.
The present invention provides a kind of radiation refrigeration curtain, including weave frame 1 and the multiple films being arranged in weave frame 1
Item 2, wherein at least partly film item 2 includes radiation refrigeration layer 211, and radiation refrigeration layer 211 includes resin and is dispersed in resin
Radiation refrigeration body, emissivity of the radiation refrigeration layer 211 in 7~14 μ m wavelength ranges be 70%~100%.
Film item 2 is arranged in weave frame 1 by the present invention, and the radiation refrigeration curtain of acquisition can be bent or fold.
Further, since weave frame 1 itself has certain braiding gap, so that radiation refrigeration curtain has more hole,
These holes make radiation refrigeration curtain have preferable gas permeability.Radiation refrigeration layer 211 on radiation refrigeration curtain has spoke
Refrigeration effect is penetrated, can passively be cooled down.
Radiation refrigeration curtain of the invention is light, bending resistance is good, mounting means is diversified, will when being cooled down
It is laid on outside object to be cooled down or space, and makes radiation refrigeration layer 211 towards outside, radiation refrigeration layer 211 by its own
Thermal energy in the form of 7~14 μm of electromagnetic waves by " atmospheric window " be discharged into temperature close to absolute zero external space, thus
Reduce own temperature, due to the presence of the temperature difference, the heat in object to be cooled down or space is constantly transmitted to the lower spoke of temperature
Refrigerating layer 211 is penetrated, the final cooling realized to object or space.And when not needing to be cooled down, radiation refrigeration curtain is received
It rises.
In hot weather, radiation refrigeration curtain of the invention is laid on big ceiling, can be effectively reduced in greenhouse
Temperature, avoid the animals and plants in greenhouse by high-temperature damage.The plastics of greenhouse can also be directly replaced using radiation refrigeration curtain
Film can not only reduce the temperature in greenhouse, it can also be ensured that good air circulation in greenhouse.Certainly, spoke of the invention
Refrigeration curtain is penetrated in addition to that can apply on greenhouse, can be applied on building, vehicle etc. facility.
In some preferred embodiments, emissivity of the radiation refrigeration layer 211 in 7~14 μ m wavelength ranges be 90%~
100%.The emissivity of radiation refrigeration layer 211 is higher, and cooling, refrigeration effect are better.
Multiple film items 2 can be threaded through side by side in weave frame 1, can also be threaded through spaced reciprocally in weave frame 1.
It, can be by adjusting the spacing distance between each film item 2, to change light transmission, the permeability of radiation refrigeration curtain when practical application.
The present invention is not defined the spacing distance between film item 2 each in weave frame 1.Fig. 1,4,5 show film item 2 for length
The schematic diagram of bar shaped, but the shape of film item 2 can also be irregular polygon, circle etc., shape of the present invention to film item 2
It is not defined, those skilled in the art can according to need the shape for selecting suitable film item 2.
In some embodiments, the surface area of film item 2 accounts for the 20%~100% of radiation refrigeration curtain total surface area.
It is exemplified below the several embodiments with film item 2:
In the first embodiment, multiple film items 2 are light-transmission type membrane item 201, as shown in Figure 1, 2, light-transmission type membrane item
201 include radiation refrigeration layer 211, and the visible light transmittance of light-transmission type membrane item 201 is greater than 50%.The radiation refrigeration curtain of the embodiment
Cloth allows visible light-transmissive, is applied when on greenhouse, while playing cooling function, it can also be ensured that animals and plants obtain
Certain illumination.
Radiation refrigeration layer 211 with a thickness of 10 μm~1000 μm.
In the second embodiment, multiple film items 2 are reflection-type film item 202, as shown in figure 3, reflection-type film item 202
Including radiation refrigeration layer 211 and reflecting layer 212, reflectivity of the reflecting layer 212 in 300nm~2500nm wave-length coverage is
20%~100%.On the one hand the radiation refrigeration curtain of the embodiment has the cooling effect of radiation refrigeration, on the other hand also have
The heat insulation of reflective thermal radiation is disposed at outside greenhouse or building, cooling and insulating excellent effect.
Reflection-type film item 202 with a thickness of 20 μm~2000 μm.
In an embodiment in reflecting layer 212, reflecting layer 212 includes metallic reflector and/or ceramic reflective layer, instead
Penetrate layer 212 with a thickness of 5nm~2000nm.The material of metallic reflector can be but not limited to one of Ag, Al, Cr, Ti
Or it is a variety of；The material of ceramic reflective layer can be but not limited to aluminium oxide, titanium oxide, silica, niobium oxide, zinc oxide, oxidation
One of indium, tin oxide, silicon nitride, titanium nitride, silicated aluminum, zinc sulphide, indium sulfide, artificial gold, magnesium fluoride, calcirm-fluoride are more
Kind.Metallic reflector or ceramic reflective layer can be used the methods of vapor deposition and be formed on radiation refrigeration layer 211, metallic reflection
Layer, ceramic reflective layer preparation method be the prior art, the present invention repeats no more.
Reflecting layer 212 can only include metallic reflector, can also only include ceramic reflective layer, can also include alternately setting
The metallic reflector and ceramic reflective layer set.Since the stability of metallic reflector is relatively poor, it is preferable that in metallic reflection
Ceramic reflective layer is arranged in the side or two sides of layer.
In another embodiment in reflecting layer 212, reflecting layer 212 is the stratiform resin with foam structure, reflecting layer
212 with a thickness of 10 μm~400 μm.It is higher that the foam structure in reflecting layer has it in 300nm~2500nm wave-length coverage
Reflectivity, foam structure can by drawing process formed and also by addition foaming agent formed, addition can also be passed through
Some particulate matters are formed.
In some cases, reflecting layer 212 can be prepared by the following method: inorganic particulate, foaming agent are mixed with resin,
Then film layer is prepared using drawing process.Wherein, inorganic particulate can be but not limited to one of silica, titanium dioxide
Or it is a variety of, foaming agent can be but not limited to poly(4-methyl-1-pentene) organic foaming agent or the organic hair of cyclic olefin copolymer resins
Infusion.Resin during stretching, can form foam structure, abscess is finer and close, is more conducive to improve around inorganic particulate
Reflectivity, the effect of foaming agent are to increase the abscess quantity generated in reflecting layer 212.
Reflecting layer 212 and radiation refrigeration layer 211 can be connected by bonding agent, reflecting layer 212 can also be with radiation refrigeration
Layer 211 uses coextruding method one-pass molding.
Preferably, reflectivity of the reflecting layer 212 in 300nm~2500nm wave-length coverage is 70%~100%, reflecting layer
212 reflectivity in 300nm~2500nm wave-length coverage is higher, and heat insulation is better.
In the third embodiment, multiple film items 2 are respectively light-transmission type membrane item 201 and reflection-type film item 202, are such as schemed
Shown in 4, wherein light-transmission type membrane item 201 is with the light-transmission type membrane item 201 of the first embodiment, and reflection-type film item 202 is the same as second
The reflection-type film item 202 of embodiment.Light-transmission type membrane item 201 and reflection-type film item 202 are arranged alternately, light-transmission type membrane item 201
It can be adjusted according to the demand to light transmission capacity with the quantity of reflection-type film item 202.Light-transmission type membrane item 201 and reflection-type film item
There are many 202 modes being arranged alternately, and two kinds of film items, such as two light-transmission types of every setting can be arranged alternately according to certain rule
One reflection-type film item 202 is set between film item 201.Light-transmission type membrane item 201 can also replace at random with reflection-type film item 202
Setting.On the one hand radiation refrigeration curtain in the embodiment has the cooling effect of radiation refrigeration, on the other hand also have anti-
The heat insulation of heat radiation is penetrated, simultaneously as a part of film light-permeable, therefore applied when on greenhouse, it can also protect
Card animals and plants obtain certain illumination.
Preferably, the thermal absorptivity in 300nm~2500nm wave-length coverage of the radiation refrigeration curtain be 2~
60%.
In the 4th kind of embodiment, a part of multiple film items 2 is the film 2a with radiation refrigeration layer 211, another
Part is the film 2b without radiation refrigeration layer 211, as shown in Figure 5.Wherein, the film 2a with radiation refrigeration layer 211 can
To be light-transmission type membrane item 201 and/or reflection-type film item 202；Film 2b without radiation refrigeration layer 211 is that transparent plastic is thin
The material of film, transparent plastic film can be but not limited to: polyethylene terephthalate (PET), poly-methyl methacrylate
Ester (PMMA), polycarbonate (PC), poly- 4- methylpentene (TPX), polybutylene terephthalate (PBT) (PBT), poly- terephthaldehyde
Sour glycol ester -1,4 cyclohexane dimethanol ester (PETG), polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polyphenyl
Ethylene (PS).
In the 5th kind of embodiment, a part of multiple film items 2 is the film 2a with radiation refrigeration layer 211, another
Part is the film 2b without radiation refrigeration layer 211, as shown in Figure 5, wherein the film 2a with radiation refrigeration layer 211 can
To be light-transmission type membrane item 201 and/or reflection-type film item 202；Film 2b without radiation refrigeration layer 211 is reflectance coating item, instead
Penetrating reflectivity of the film item in 300nm~2500nm wave-length coverage is 50%~100%.
In some cases, as shown in fig. 6, film 2b includes base 221 and the reflecting layer that is arranged in base 221
222, when reflecting layer 222 is metallic reflector and/or ceramic reflective layer.
In other cases, film 2b includes reflecting layer, and reflecting layer is the stratiform resin with foam structure.
It is noted that the film 2b for not having radiation refrigeration layer 211 can also be the film item with other function, this
Invention the above various embodiments is not exhausted enumerates.
In some other implementation, light-transmission type membrane item 201 can also include other layers in addition to radiation refrigeration layer 211,
Only need to guarantee that light-transmission type membrane item 201 has required light transmittance.Similarly, reflectivity film item 202 can also include removing spoke
Penetrate other layers except refrigerating layer 211, reflecting layer 212.
In each embodiment, the radiation refrigeration body in radiation refrigeration layer 211 can be but not limited to silica, titanium dioxide
One of titanium, silicon carbide, calcium carbonate, zinc oxide, aluminium oxide, barium sulfate are a variety of, and the average grain diameter of radiation refrigeration body is
10nm~30 μm.
In each embodiment, the resin in radiation refrigeration layer 211 can be but not limited to: polyethylene terephthalate
(PET), polymethyl methacrylate (PMMA), polycarbonate (PC), poly- 4- methylpentene (TPX), poly terephthalic acid fourth two
Alcohol ester (PBT), polyethylene terephthalate -1,4 cyclohexane dimethanol ester (PETG), polypropylene (PP), polyethylene
(PE), polyvinyl chloride (PVC), polystyrene (PS).
Weave frame 1 is the network structure formed using yarn woven, for multiple film items 2 being separated from each other to be combined shape
Integral curtain.Material used in weave frame 1 can be various plastics, fiber etc., material used in weave frame 1
Material can be transparent or opaque material.Weave frame 1 can be used prior art preparation and obtain, and the present invention repeats no more.
In some embodiments, weave frame 1 is preferably prepared using transparent material, to reduce 1 shadow of weave frame as far as possible
Ring the radiation refrigeration effect of film item.
In further embodiments, weave frame 1 is preferably formed as multiple netted mounting portions 11 being parallel to each other, at least partly
Film item 2 is equipped in netted mounting portion 11.
In further embodiments, the material at least partially radiation refrigeration fiber of weave frame 1, radiation system are knitted to form
Cold fiber includes resin and the radiation refrigeration body being dispersed in resin, and preparation method can refer to existing preparation method, spoke
Penetrate refrigeration body can be but not limited to silica, titanium dioxide, silicon carbide, calcium carbonate, zinc oxide, aluminium oxide, in barium sulfate
It is one or more, the average grain diameter of radiation refrigeration body is 10nm~30 μm.
[embodiment 1]
A kind of radiation refrigeration curtain includes weave frame 1 and multiple film items 2 for being disposed side by side in weave frame 1, more
A film item 2 is respectively the light-transmission type membrane item 201 and reflection-type film item 202 being arranged alternately, as shown in Figure 4.
Light-transmission type membrane item 201 includes resin and the radiation refrigeration body being dispersed in resin, and radiation refrigeration body is that partial size is
10 microns of SiO2, the mass ratio of radiation refrigeration body and resin is 2:99, light-transmission type membrane item 201 with a thickness of 100 microns.
Reflection-type film item 202 includes radiation refrigeration layer 211 and the reflecting layer 212 being formed on radiation refrigeration layer 211.Spoke
The radiation refrigeration body that refrigerating layer 211 includes resin and is dispersed in resin is penetrated, radiation refrigeration body is that partial size is 10 microns
SiO2, the mass ratio of radiation refrigeration body and resin is 2:99, radiation refrigeration layer 211 with a thickness of 100 microns.Reflecting layer 212
Including the metallic aluminum with a thickness of 20nm and with a thickness of the alumina layer of 30nm.The layer structure of reflection-type film item 202 is successively
Radiation refrigeration layer, metallic aluminum, the alumina layer of setting.
Using Perkin Elmer, 950 type UV/Vis/NIR Spectrometer of Lambda to light-transmission type membrane item 201 into
The test of row visible light transmittance, the survey that the reflectivity in 300nm~2500nm wave-length coverage is carried out to reflection-type film item 202
Thermal absorptivity of the radiation refrigeration curtain in 300nm~2500nm wave-length coverage is tested in examination.Using SOC-
100Hemispherical Directional Reflectometer to light-transmission type membrane item 201 and reflection-type film item 202 into
The test of the emissivity of 7~14 mum wavelength of row.Test result are as follows: hair of the light-transmission type membrane item 201 in 7 μm~14 μ m wavelength ranges
Penetrating rate is 93.2%；The visible light transmittance of light-transmission type membrane item 201 is 92.1%；Reflection-type film item 202 is in 7 μm~14 mum wavelengths
Emissivity in range is 93.0%；Reflectivity of the reflection-type film item 202 in 300nm~2500nm wave-length coverage be
93.4%；Thermal absorptivity of the radiation refrigeration curtain in 300nm~2500nm wave-length coverage is 5.2%.
[embodiment 2]
A kind of radiation refrigeration curtain includes weave frame 1 and multiple film items 2 for being disposed side by side in weave frame 1, more
A film item 2 is light-transmission type membrane item 201.
Light-transmission type membrane item 201 includes resin and the radiation refrigeration body being dispersed in resin, and radiation refrigeration body is that partial size is
10 microns of SiO2, the mass ratio of radiation refrigeration body and resin is 2:99, light-transmission type membrane item 201 with a thickness of 100 microns.
Using Perkin Elmer, 950 type UV/Vis/NIR Spectrometer of Lambda to light-transmission type membrane item 201 into
The test of row visible light transmittance carries out thermal absorptivity of the radiation refrigeration curtain in 300nm~2500nm wave-length coverage
Test.Using SOC-100Hemispherical Directional Reflectometer to light-transmission type membrane item 201 carry out 7~
The test of the emissivity of 14 mum wavelengths.Test result are as follows: emissivity of the light-transmission type membrane item 201 in 7 μm~14 μ m wavelength ranges
It is 93.2%；The visible light transmittance of light-transmission type membrane item 201 is 92.1%；Radiation refrigeration curtain is in 300nm~2500nm wavelength
Thermal absorptivity in range is 7.0%.
[comparative example 1]
A kind of curtain includes weave frame and multiple film items for being disposed side by side in weave frame, and multiple film items are reflection
Film item, reflectance coating item include base layer of resin and the reflecting layer that is formed in base layer of resin, and reflecting layer includes with a thickness of 20nm's
Metallic aluminum and alumina layer with a thickness of 30nm.The layer structure of reflectance coating item is the base layer of resin set gradually, metallic aluminium
Layer, alumina layer.Wherein, base layer of resin with a thickness of 100 microns, radiation refrigeration layer in the material and embodiment 1 of base layer of resin
Resin it is identical.
Reflectance coating item is carried out using Perkin Elmer, 950 type UV/Vis/NIR Spectrometer of Lambda
The test of reflectivity in 300nm~2500nm wave-length coverage, the heat absorption to curtain in 300nm~2500nm wave-length coverage
Rate is tested.Test result are as follows: reflectivity of the reflectance coating item in 300nm~2500nm wave-length coverage is 93.4%；Radiation
The thermal absorptivity of refrigeration curtain is 5.1%.
The radiation refrigeration curtain of embodiment 1, embodiment 2, comparative example 1 is separately positioned on the outside of greenhouse, while phase is set
Greenhouse with size is as blank control example.It tests the outdoor temperature of 9:00~17:00 of a certain regional some day, be covered with implementation
The greenhouse A internal temperature of 1 curtain of example is equipped with the greenhouse B internal temperature of 2 curtain of embodiment, is covered with the greenhouse of 1 curtain of comparative example
C internal temperature and the greenhouse D internal temperature for not spreading curtain, test result are shown in Table 1.
Table 1
From the test data of table 1 it can be seen that being provided with the canopy temperature of the radiation refrigeration curtain of embodiment 1, compare family
Outer temperature is 2~4 DEG C low；The canopy temperature of radiation refrigeration curtain provided with embodiment 2,2~5 DEG C lower than outdoor temperature；If
The canopy temperature for having set the curtain of comparative example 1 is 2~9 DEG C higher than outdoor temperature；The greenhouse of not set any curtain, Indoor Temperature
Degree is higher by 5~12 DEG C than outdoor temperature.
It can be found that: radiation refrigeration curtain of the invention is set on greenhouse with apparent refrigeration effect, can be made big
Temperature of shed is lower than outdoor temperature, and radiation refrigeration is combined (i.e. embodiment 1) with reflective insulation, can achieve preferably
Cooling effect；The curtain of comparative example 1 is only set on greenhouse, although canopy temperature ratio is not provided with low when curtain, its temperature
Degree will not be lower than outdoor temperature, and cooling effect is poor.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed range.
Claims (10)
1. a kind of radiation refrigeration curtain, which is characterized in that multiple films including weave frame and in the weave frame
Item, at least partly described film item includes radiation refrigeration layer, and the radiation refrigeration layer includes resin and is dispersed in the resin
Radiation refrigeration body, emissivity of the radiation refrigeration layer in 7 μm~14 μ m wavelength ranges be 70%~100%.
2. radiation refrigeration curtain according to claim 1, which is characterized in that multiple film items are side by side or compartment of terrain is worn
In the weave frame, the surface area of each film item accounts for the 20%~100% of the radiation refrigeration curtain total surface area.
3. radiation refrigeration curtain according to claim 1, which is characterized in that the visible light transmittance of the radiation refrigeration layer
Greater than 50%, the radiation refrigeration layer with a thickness of 10 μm~1000 μm.
4. radiation refrigeration curtain according to claim 1, which is characterized in that at least partly described film item includes reflecting layer,
Reflectivity of the reflecting layer in 300nm~2500nm wave-length coverage is 20%~100%.
5. radiation refrigeration curtain according to claim 1, which is characterized in that at least partly described film item includes the radiation
Refrigerating layer and the reflecting layer that radiation refrigeration layer side is arranged in, the reflecting layer is in 300nm~2500nm wave-length coverage
Interior reflectivity is 20%~100%.
6. radiation refrigeration curtain according to claim 4 or 5, which is characterized in that the reflecting layer include metal layer and/or
Ceramic layer, the reflecting layer with a thickness of 5nm~2000nm.
7. radiation refrigeration curtain according to claim 4 or 5, which is characterized in that the reflecting layer is with foam structure
Stratiform resin, the reflecting layer with a thickness of 10 μm~400 μm.
8. radiation refrigeration curtain according to claim 1, which is characterized in that multiple film items are respectively light-transmission type membrane item
And reflection-type film item, the light-transmission type membrane item include the radiation refrigeration layer, the visible light transmittance of the light-transmission type membrane item
Greater than 50%, the reflection-type film item includes the radiation refrigeration layer and the reflection that radiation refrigeration layer side is arranged in
Layer, reflectivity of the reflection-type film item in 300nm~2500nm wave-length coverage are 20%~100%.
9. radiation refrigeration curtain according to claim 8, which is characterized in that the radiation refrigeration curtain 300nm~
Thermal absorptivity in 2500nm wave-length coverage is 2~60%.
10. -5,8,9 any radiation refrigeration curtain according to claim 1, which is characterized in that the radiation refrigeration body
Average-size is 10nm~30 μm, and the radiation refrigeration body is selected from one or more of: silica, titanium dioxide, carbonization
Silicon, calcium carbonate, zinc oxide, aluminium oxide, barium sulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910129920.6A CN109906840A (en) | 2019-02-21 | 2019-02-21 | A kind of radiation refrigeration curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910129920.6A CN109906840A (en) | 2019-02-21 | 2019-02-21 | A kind of radiation refrigeration curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109906840A true CN109906840A (en) | 2019-06-21 |
Family
ID=66962033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910129920.6A Pending CN109906840A (en) | 2019-02-21 | 2019-02-21 | A kind of radiation refrigeration curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109906840A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110256836A (en) * | 2019-06-28 | 2019-09-20 | 宁波瑞凌新能源科技有限公司 | A kind of selfreparing radiation refrigeration film |
| CN111877963A (en) * | 2020-07-09 | 2020-11-03 | 河南五方合创建筑设计有限公司 | Radiation refrigeration printing opacity solar protection devices |
| WO2021088398A1 (en) * | 2019-11-06 | 2021-05-14 | 宁波瑞凌新能源科技有限公司 | Radiation refrigeration fabric and product |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2537210Y (en) * | 2001-09-25 | 2003-02-26 | 上海农园绿色工程有限公司 | Reflection energy saving sun shade curtain |
| JP2010085917A (en) * | 2008-10-02 | 2010-04-15 | Asahi Kasei E-Materials Corp | Transparent heat-ray reflecting film and heat-ray shielding windowpane using the same |
| CN108432507A (en) * | 2018-06-11 | 2018-08-24 | 宁波瑞凌节能环保创新与产业研究院 | A kind of Agricultural greenhouse film with radiation cooling function |
| CN108518026A (en) * | 2018-06-11 | 2018-09-11 | 宁波瑞凌节能环保创新与产业研究院 | A kind of radiation refrigeration bituminized shingle |
| CN207901779U (en) * | 2017-11-14 | 2018-09-25 | 新奥科技发展有限公司 | Pad pasting |
| CN108891115A (en) * | 2018-08-24 | 2018-11-27 | 宁波瑞凌节能环保创新与产业研究院 | A kind of radiation refrigeration film of achievable passive cooling |
| CN109341137A (en) * | 2018-10-24 | 2019-02-15 | 苏州融睿纳米复材科技有限公司 | Passive refrigeration structure based on photonic crystal |
| CN210094176U (en) * | 2019-02-21 | 2020-02-21 | 宁波瑞凌新能源科技有限公司 | Radiation refrigeration curtain |
-
2019
- 2019-02-21 CN CN201910129920.6A patent/CN109906840A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2537210Y (en) * | 2001-09-25 | 2003-02-26 | 上海农园绿色工程有限公司 | Reflection energy saving sun shade curtain |
| JP2010085917A (en) * | 2008-10-02 | 2010-04-15 | Asahi Kasei E-Materials Corp | Transparent heat-ray reflecting film and heat-ray shielding windowpane using the same |
| CN207901779U (en) * | 2017-11-14 | 2018-09-25 | 新奥科技发展有限公司 | Pad pasting |
| CN108432507A (en) * | 2018-06-11 | 2018-08-24 | 宁波瑞凌节能环保创新与产业研究院 | A kind of Agricultural greenhouse film with radiation cooling function |
| CN108518026A (en) * | 2018-06-11 | 2018-09-11 | 宁波瑞凌节能环保创新与产业研究院 | A kind of radiation refrigeration bituminized shingle |
| CN108891115A (en) * | 2018-08-24 | 2018-11-27 | 宁波瑞凌节能环保创新与产业研究院 | A kind of radiation refrigeration film of achievable passive cooling |
| CN109341137A (en) * | 2018-10-24 | 2019-02-15 | 苏州融睿纳米复材科技有限公司 | Passive refrigeration structure based on photonic crystal |
| CN210094176U (en) * | 2019-02-21 | 2020-02-21 | 宁波瑞凌新能源科技有限公司 | Radiation refrigeration curtain |
Non-Patent Citations (1)
| Title |
|---|
| 康许科: "超临界CO2发泡法制备PS/PP微发泡反射板", 中国优秀硕士学位论文全文数据库, no. 9, pages 4 - 5 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110256836A (en) * | 2019-06-28 | 2019-09-20 | 宁波瑞凌新能源科技有限公司 | A kind of selfreparing radiation refrigeration film |
| CN110256836B (en) * | 2019-06-28 | 2022-06-21 | 宁波瑞凌新能源科技有限公司 | Self-repairing radiation refrigerating film |
| WO2021088398A1 (en) * | 2019-11-06 | 2021-05-14 | 宁波瑞凌新能源科技有限公司 | Radiation refrigeration fabric and product |
| CN111877963A (en) * | 2020-07-09 | 2020-11-03 | 河南五方合创建筑设计有限公司 | Radiation refrigeration printing opacity solar protection devices |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI725533B (en) | Radiative cooling material, method for manufacturing the same and application thereof | |
| JP7023978B2 (en) | Radiative cooling function paint and its applications | |
| CN109906840A (en) | A kind of radiation refrigeration curtain | |
| KR101567996B1 (en) | Article of the tent or shelter type | |
| Hemming et al. | Greenhouse cooling by NIR-reflection | |
| KR20180120155A (en) | Agricultural house, plant cultivation method using this agricultural house and heat ray reflective film structure | |
| Heo et al. | Heat-shedding with photonic structures: radiative cooling and its potential | |
| WO2015094924A1 (en) | Reflective articles and methods for increasing photosynthesis | |
| Teitel et al. | Greenhouse and screenhouse cover materials: Literature review and industry perspective | |
| JP7265703B2 (en) | Laminated films, greenhouse horticultural films, and woven and knitted fabrics | |
| Hoffmann et al. | Tropical and subtropical greenhouses-A challenge for new plastic films | |
| Gangisetty et al. | A review of nanoparticle material coatings in passive radiative cooling systems including skylights | |
| CN210094176U (en) | Radiation refrigeration curtain | |
| CN205153944U (en) | Energy -conserving shutter plate of transparent | |
| US20220381524A1 (en) | Systems and Methods for Spectrally Selective Thermal Radiators with Partial Exposures to Both the Sky and the Terrestrial Environment | |
| CN210617539U (en) | Radiation cooling material and composite material thereof | |
| CN203374161U (en) | Liquid intelligent temperature and light adjusting glass | |
| CN104542091A (en) | Greenhouse | |
| RU2642555C1 (en) | Sun-protective device | |
| CN2537210Y (en) | Reflection energy saving sun shade curtain | |
| JP2008086284A (en) | Material for natural lighting for agricultural and horticultural hot house, and agricultural and horticultural hot house | |
| Montero et al. | Greenhouse design and covering materials | |
| TW201622988A (en) | Temperature regulation film and manufacture method thereof | |
| CN206851515U (en) | A kind of heat-insulated antifog heliogreenhouse | |
| JPS6158527A (en) | Heat insulating greenhouse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |