Ultrahigh-performance radiative cooler

    公开(公告)号:US10508838B2

    公开(公告)日:2019-12-17

    申请号:US15651595

    申请日:2017-07-17

    Abstract: A radiative cooler is provided having a thermally insulated vacuum chamber housing that is configured to support a vacuum level of at least 10−5 Torr, an infared-transparent window that is sealably disposed on top of the thermally insulated vacuum chamber and is transparet in the range of 8-13 μm, a selective emitter disposed inside the chamber, a mirror cone on the infared-transparent window, a selective emitter inside the chamber and is configured to passively dissipate heat from the earth into outer space through the infared-transparent window and is thermally decoupled from ambient air and solar irradiation but coupled to outer space, a heat exchanger with inlet and outlet pipes disposed below the selective emitter to cool water flowing through the pipe, a sun shade disposed vertically outside the chamber to minimize direct solar irradiation, and a mirror cone to minimize downward atmospheric radiation.

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