Preliminary study of radiative cooling in cooling season of the humid coastal area,Solar Energy Materials and Solar Cells

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Preliminary study of radiative cooling in cooling season of the humid coastal area
Solar Energy Materials and Solar Cells ( IF 6.9 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.solmat.2020.110412
Junwei Liu , Debao Zhang , Shifei Jiao , Zhihua Zhou , Zhuofen Zhang , Feng Gao

Abstract Radiative cooling technology without any energy input and any pollutants produced has drown more and more attention. However, most of the studies were conducted in the transition season of arid areas. In this work, the radiative cooling performance was theoretically and experimentally explored in cooling season of the humid coastal area. The results indicated that the average deviation between the cooling and transition season in arid areas was about 18.9%, while for humid areas, it reached up to 53.9%. And for a clear daytime sky, the average temperature drop in the transition season was about 6 °C, while that in cooling season was only 2.7 °C. Additionally, the tilt experiment demonstrated that strategy can improve the radiative cooling performance in cooling season of humid areas, but the improvement was significantly lower than that in transition season. Subsequently, the average radiative cooling potential of China was further explored and the results revealed that radiative cooling technology can meet the cooling demand of 85% areas in China. Feasible solutions to improve the poor cooling performance in humid areas were further discussed. And reducing the solar absorption and non-radiative heat exchange were expected to address the challenge. Our work provides insight into radiative cooling performance in cooling season of humid areas.

更新日期：2020-05-01

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