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18 March 2021 Effects of the environmental unilateral shield on radiative cooling performance
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Radiative cooling as a spontaneous cooling phenomenon without any energy input has great research value and broad application prospects. However, environmental shields around the thermal emitter have a negative impact on the radiative cooling power of thermal emitters. A PTFE-Al was used as the radiative cooling thermal emitter, and the radiative cooling performances with different unilateral shielding angle were measured. The temperature difference of 7.4°C was achieved in an open and unobstructed environment, while the temperature difference of 2.8°C at the unilateral shielding angle of 90 deg. Furthermore, using the energy conservation model, we theoretically calculated the radiative cooling powers and the temperature differences of the thermal emitter under different shielding conditions, which were in good agreement with the experimental results.

© 2021 Society of Photo-Optical Instrumentation Engineers (SPIE) 1947-7988/2021/$28.00 © 2021 SPIE
Kai Gao, Youwen Liu, and Honglie Shen "Effects of the environmental unilateral shield on radiative cooling performance," Journal of Photonics for Energy 11(2), 022102 (18 March 2021).
Received: 25 August 2020; Accepted: 2 March 2021; Published: 18 March 2021

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