Element for emission of thermal radiation

Abstract

The present disclosure provides an element for emission of thermal radiation. The element comprises particles arranged for receiving thermal energy and emitting at least a portion of the received thermal energy in the form of the thermal radiation. The thermal radiation predominantly has a wavelength or wavelength range within an atmospheric window wavelength range in which the atmosphere of the Earth has a reduced average absorption and emission compared with an average absorption and emission in an adjacent wavelength range whereby absorption by the element of radiation from the atmosphere is reduced.

Description

FIELD OF THE INVENTION[0001]The present invention broadly relates to an element for emission of thermal radiation.BACKGROUND OF THE INVENTION[0002]Various methods are used to cool interior spaces of buildings, refrigerate food, condense water or reduce the temperature of objects. These methods have in common that they require relatively large amounts of energy, which typically are provided in the form of electrical energy. For example, in countries which have a relatively warm climate the electrical energy required for cooling often exceeds the available electrical energy, which may result in a breakdown of a power grid. Further, electrical energy is at this time still at least partially generated using non-renewable energy resources, for example by burning coal, which is of concern for the environment and contributes to global warming. Consequently, it would be advantageous if cooling could be achieved in a manner that uses less energy. There is a need for technological advancement...

AI Technical Summary

Benefits of technology

[0051]The cooling device may also comprise a cover that may be suspended over a body portion of the element or that may be provided in the form of a cover layer that is in direct contact with the body portion. The cover typically is transmissive for the thermal radiation and protects the particles from hot breezes and other external influences that could reduce the cooling efficiency. The cover typically is arranged for reduction of exchange of thermal energy by convection. For example, the cover may comprise a polymeric material such as polyethylene. Further, the cover may comprise an oxide or sulphide material, which typically is arranged to block at least a portion of incident UV radiation.

[0052]In one specific example the oxide or sulphide material is positioned on or over the polyethylene material and also protects the polyethylene. This example combines the relative s

Problems solved by technology

These methods have in common that they require relatively large amounts of energy, which typically are provided in the form of electrical energy.

For example, in countries which have a relatively warm climate the electrical energy required for cooling often exceeds the available ele

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