Elastomers and Composites

Recent Progress in Passive Radiative Cooling for Sustainable Energy Source

Choyeon Park^*^,^**, Chanil Park^**, Jae-Hak Choi^*, Youngjae Yoo^***^,^†

^*Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-Gu, Daejeon 34134, Republic of Korea ^**Advanced Materials Division, Korea Research Institute of Chemical Technology, 141, Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea ^***Department of Advanced Materials Engineering, Chung-Ang University, 4726 Seodong-daero, Daedeok-Myeon, Anseong 17546, Republic of Korea

Elastomers Compos. 2022;57(2):62-72 https://doi.org/10.7473/EC.2022.57.2.62

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Abstract

Passive daytime radiative cooling (PDRC) is attracting increasing attention as an eco-friendly technology that can save cooling energy by not requiring an external power supply. An ideal PDRC structure should improve solar reflectance and emissivity within the atmospheric spectral window. Early designs of photonic crystal materials demonstrated the benefits of PDRC. Since then, functional arrangements of polymer-based radiative cooling materials have played an important role and are rapidly expanding. This review summarizes the known inorganic, organic, and hybrid materials for PDRC. The review also provides a complete understanding of PDRC and highlights its practical applications.

Keywords: passive radiative cooling;atmospheric window;composites;porous polymer;thermal emitter

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Recent Progress in Passive Radiative Cooling for Sustainable Energy Source

Choyeon Park*,**, Chanil Park**, Jae-Hak Choi*, Youngjae Yoo***,†

Abstract

Choyeon Park^^,^, Chanil Park^, Jae-Hak Choi^, Youngjae Yoo^***^,^†