TY - JOUR
T1 - Hybrid concentrated radiative cooling and solar heating in a single system
AU - Zhou, Lyu
AU - Song, Haomin
AU - Zhang, Nan
AU - Rada, Jacob
AU - Singer, Matthew
AU - Zhang, Huafan
AU - Ooi, Boon S.
AU - Yu, Zongfu
AU - Gan, Qiaoqiang
N1 - KAUST Repository Item: Exported on 2021-02-15
Acknowledgements: This work was supported by the National Science Foundation (CBET-1932968 and 1932843).
PY - 2021/2
Y1 - 2021/2
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/667372
UR - https://linkinghub.elsevier.com/retrieve/pii/S2666386421000230
U2 - 10.1016/j.xcrp.2021.100338
DO - 10.1016/j.xcrp.2021.100338
M3 - Article
SN - 2666-3864
SP - 100338
JO - Cell Reports Physical Science
JF - Cell Reports Physical Science
ER -