Radiation refrigeration curtain

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...

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

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