Hybrid concentrated radiative cooling and solar heating in a single system
Type
ArticleAuthors
Zhou, Lyu
Song, Haomin
Zhang, Nan
Rada, Jacob
Singer, Matthew
Zhang, Huafan

Ooi, Boon S.

Yu, Zongfu

Gan, Qiaoqiang

KAUST Department
Electrical Engineering ProgramElectrical Engineering
Physical Science and Engineering (PSE) Division
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Date
2021-02Submitted Date
2020-06-29Permanent link to this record
http://hdl.handle.net/10754/667372
Metadata
Show full item recordAbstract
Radiative cooling is an emerging sustainable technology that does not require electricity to function. However, to realize sub-ambient cooling, the effects of the undesired incident solar energy must be minimized. Considering an ideal blackbody radiator at 300 K, the maximum cooling power density is 160 W/m2. Here, we report an architecture capable of overcoming this challenge by using two spectrally selective mirrors to simultaneously absorb the incident sunlight and re-direct the thermal emission from a vertically aligned emitter. With this configuration, both sides of the vertical emitter can be used together to realize a measured local cooling power density of over 270 W/m2 in a controlled laboratory environment. Under standard atmospheric pressure, we realized cooling that was 14C below the ambient temperature in the laboratory environment and a more than 12C temperature reduction in outdoor testing.Citation
Zhou, L., Song, H., Zhang, N., Rada, J., Singer, M., Zhang, H., … Gan, Q. (2021). Hybrid concentrated radiative cooling and solar heating in a single system. Cell Reports Physical Science, 100338. doi:10.1016/j.xcrp.2021.100338Sponsors
This work was supported by the National Science Foundation (CBET-1932968 and 1932843).Publisher
Elsevier BVJournal
Cell Reports Physical ScienceAdditional Links
https://linkinghub.elsevier.com/retrieve/pii/S2666386421000230ae974a485f413a2113503eed53cd6c53
10.1016/j.xcrp.2021.100338
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Except where otherwise noted, this item's license is described as This is an open access article under the CC BY-NC-ND license.