Radiative cooling surface coatings
AssigneeSkycool Pty Ltd.
InventorsNone recorded
Life of this patent
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Abstract
A surface coating composition which exhibits low solar absorption and preferential emission at wavelengths corresponding to atmospheric windows in the infra-red regions is provided by the addition of microspheres to a composition containing a solar reflective pigment.
Claims25
A surface coating composition for providing a surface coating having radiative cooling properties, the composition including a solar reflective pigment and a quantity of microspheres, said coating having a high reflectance of solar radiation, wherein said quantity of microspheres is effective to enhance the emittance of said coating such that said coating has a high radiative emittance in a wavelength range of 8 to 13 μm to emit thermal energy in said wavelength range.
A method of reducing temperature within a building relative to ambient temperature, said method including the step of applying a surface coating to the building, said coating including a solar reflective pigment and a quantity of microspheres, said coating having a high reflectance of solar radiation, wherein said quantity of microspheres is effective to enhance the emittance of said coating such that said coating has a high radiative emittance in a wavelength range of 8 to 13 μm to emit thermal energy in said wavelength range.
Dependencies are inferred from the claim text.