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Radiation refrigeration curtain

A technology of radiant cooling and curtains, applied in roof covering, climate change adaptation, horticulture, etc., can solve the problems of affecting the normal growth of animals and plants, limited cooling effect, and inconspicuous effect, and achieves diverse installation methods and resistance to bending good sex effect

Pending Publication Date: 2019-06-21
NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, some methods reduce the indoor temperature of the greenhouse by adding a sunshade system to the greenhouse, but the cooling effect of this method is limited, and when the light is blocked too much, it will also affect the normal growth of animals and plants
There are also some that increase the ventilation system on the greenhouse to reduce the indoor temperature of the greenhouse, but if the outdoor temperature itself is relatively high, the cooling effect of ventilation is not obvious

Method used

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  • Radiation refrigeration curtain
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0036] In the first embodiment, a plurality of film strips 2 are light-transmitting film strips 201, such as figure 1 , 2 As shown, the light-transmitting film strip 201 includes a radiation cooling layer 211 , and the visible light transmittance of the light-transmitting film strip 201 is greater than 50%. The radiant cooling screen of this embodiment allows visible light to pass through, and when it is applied to a greenhouse, it can not only reduce the temperature, but also ensure that animals and plants get a certain amount of light.

[0037] The thickness of the radiation cooling layer 211 is 10 μm˜1000 μm.

[0038] In the second embodiment, a plurality of film strips 2 are reflective film strips 202, such as image 3 As shown, the reflective film strip 202 includes a radiative cooling layer 211 and a reflective layer 212, and the reflective rate of the reflective layer 212 is 20%-100% in the wavelength range of 300nm-2500nm. The radiation cooling screen of this embodi...

Embodiment 1

[0061] A radiant cooling curtain includes a woven frame 1 and a plurality of film strips 2 arranged side by side on the woven frame 1, and the plurality of film strips 2 are respectively alternately arranged light-transmitting film strips 201 and reflective film strips 202, such as Figure 4 shown.

[0062] The light-transmitting film strip 201 includes a resin and a radiation cooling body dispersed in the resin, and the radiation cooling body is SiO with a particle size of 10 microns. 2 , the mass ratio of the radiant cooling body to the resin is 2:99, and the thickness of the light-transmitting film strip 201 is 100 microns.

[0063] The reflective film strip 202 includes a radiative cooling layer 211 and a reflective layer 212 formed on the radiative cooling layer 211 . Radiation cooling layer 211 includes resin and radiation cooling body dispersed in the resin, the radiation cooling body is SiO with a particle size of 10 microns 2 , the mass ratio of the radiation coolin...

Embodiment 2

[0066] A radiant cooling screen includes a woven frame 1 and a plurality of film strips 2 arranged side by side on the woven frame 1 , and the plurality of film strips 2 are all light-transmitting film strips 201 .

[0067] The light-transmitting film strip 201 includes a resin and a radiation cooling body dispersed in the resin, and the radiation cooling body is SiO with a particle size of 10 microns. 2 , the mass ratio of the radiant cooling body to the resin is 2:99, and the thickness of the light-transmitting film strip 201 is 100 microns.

[0068] Perkin Elmer, Lambda 950 UV / Vis / NIR Spectrometer was used to test the visible light transmittance of the light-transmitting film strip 201, and to test the heat absorptivity of the radiation cooling curtain in the wavelength range of 300nm to 2500nm. A SOC-100 Hemispherical Directional Reflectometer is used to test the emissivity of the light-transmitting film strip 201 at a wavelength of 7-14 μm. The test results are: the emis...

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Abstract

The invention discloses a radiation refrigeration curtain which comprises a woven frame and a plurality of membrane strips arranged on the woven frame. At least part of the membrane strips comprises aradiation refrigeration layer, the radiation refrigeration layer comprises resin and a radiation refrigeration body dispersed in the resin, and the emissivity of the radiation refrigeration layer is70-100% in the wavelength range of 7-14 microns. The radiation refrigeration curtain has the advantages of being light in weight, good in bending resistance and diversified in installation modes, is paved outside an object or space to be cooled when cooling is needed, the radiation refrigeration layer is enabled to face the outer side and discharges its heat energy to the outside space with the temperature close to absolute zero degree in the form of 7-14 microns of electromagnetic waves through an atmosphere window, so that the temperature of the radiation refrigeration layer is reduced; dueto the existence of the temperature difference, the heat in the object or space to be cooled is continuously transferred to the radiation refrigeration layer with lower temperature, and the cooling ofthe object or space is finally achieved. When cooling is not needed, the radiation refrigeration curtain is put away.

Description

technical field [0001] The invention relates to a radiation cooling screen. Background technique [0002] At present, greenhouses are widely used in fields such as fruits and vegetables, flowers, and breeding. The greenhouse can keep warm when the weather is cold, and avoid frostbite of the animals and plants in the greenhouse. However, in the hot summer, the temperature in the greenhouse is too high, which will also cause damage to the animals and plants in the greenhouse. When the external temperature is high, how to ensure a suitable temperature in the greenhouse is a problem that needs to be solved at present. [0003] In the prior art, some methods reduce the indoor temperature of the greenhouse by adding a shading system to the greenhouse, but the cooling effect of this method is limited, and when the light is blocked too much, it will also affect the normal growth of animals and plants. There are also some that increase the ventilation system on the greenhouse to re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G9/22A01G9/24B32B9/00B32B9/04B32B3/14B32B27/20B32B7/12B32B33/00E04D5/10
CPCY02A40/25
Inventor 徐绍禹丁海林其他发明人请求不公开姓名
Owner NINGBO RADI COOL ADVANCED ENERGY TECH CO LTD
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