Radiative cooling device and radiative cooling method
AssigneeOsaka Gas Co., Ltd.
InventorsMasahiro Suemitsu, Tadashi Saito
Life of this patent
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Abstract
A radiative cooling device and a radiative cooling method that effectively suppress ultraviolet light absorption. The radiative cooling device includes an ultraviolet reflection layer that reflects ultraviolet light UV, a light reflection layer that reflects visible light and infrared light, and an infrared radiative layer that radiates infrared light IR. Infrared light IR is radiated form a radiative surface. The ultraviolet reflection layer, the infrared radiative layer and the light reflection layer are laminated in this order as viewed from the side of the radiative surface.
Claims13
A radiative cooling device comprising an ultraviolet reflection layer that reflects ultraviolet light, a light reflection layer that reflects visible light and infrared light, and an infrared radiative layer that radiates infrared light, the radiative cooling device having a radiative surface and being configured to radiate the infrared light from the radiative surface;
- wherein the ultraviolet reflection layer, the infrared radiative layer and the light reflection layer are laminated in this order as viewed from a side of the radiative surface;
- wherein the thickness of the infrared radiative layer lies in the range of 20 μm or more to 10000 μm or less;
- and
- wherein the infrared radiative layer is formed of silicon dioxide.
A radiative cooling method, the method comprising the steps of:
- using a radiative cooling device comprising an ultraviolet reflection layer that reflects ultraviolet light, a light reflection layer that reflects visible light and infrared light, and an infrared radiative layer that radiates infrared light, wherein the infrared radiative layer is formed of silicon dioxide, the ultraviolet reflection layer, the infrared radiative layer and the light reflection layer being laminated in this order as viewed from a side of a radiative surface of the radiative cooling device, the thickness of the infrared radiative layer lying in the range of 20 μm or more to 10000 μm or less;
- and
- radiating from the radiative surface on a side opposite a side of the ultraviolet reflection layer contacting the infrared reflection layer.
Dependencies are inferred from the claim text.