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Accelerating vapor condensation with daytime radiative cooling
Author(s): Ming Zhou; Haomin Song; Xingyu Xu; Alireza Shahsafi; Zhenyang Xia; Zhenqiang Ma; Mikhail A. Kats; Jia Zhu; Boon S. Ooi; Qiaoqiang Gan; Zongfu Yu
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Paper Abstract

Vapor condensation plays a crucial role in solar water-purification technologies. Conventional condensers in solar water-purification systems do not provide sufficient cooling power for vapor condensation, limiting the water production rate to 0.4 L m-2 hour-1. On the other hand, radiative dew condensation, a technique used by existing radiative dew condensers, only works at nighttime and is incompatible with solar water-purification technologies. Here, we develop daytime radiative condensers that reflect almost all solar radiation, and can thus create dew water even in direct sunlight. Compared to stateof- art condensers, our daytime radiative condenser doubles the production of purified water over a 24-hour period.

Paper Details

Date Published: 9 September 2019
PDF: 8 pages
Proc. SPIE 11121, New Concepts in Solar and Thermal Radiation Conversion II, 1112107 (9 September 2019); doi: 10.1117/12.2525125
Show Author Affiliations
Ming Zhou, Univ. of Wisconsin-Madison (United States)
Haomin Song, Univ. at Buffalo (United States)
Xingyu Xu, Tsinghua Univ. (China)
Alireza Shahsafi, Univ. of Wisconsin-Madison (United States)
Zhenyang Xia, Univ. of Wisconsin-Madison (United States)
Zhenqiang Ma, Univ. of Wisconsin-Madison (United States)
Mikhail A. Kats, Univ. of Wisconsin-Madison (United States)
Jia Zhu, Nanjing Univ. (China)
Boon S. Ooi, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Qiaoqiang Gan, Univ. at Buffalo (United States)
Zongfu Yu, Univ. of Wisconsin-Madison (United States)


Published in SPIE Proceedings Vol. 11121:
New Concepts in Solar and Thermal Radiation Conversion II
Jeremy N. Munday; Peter Bermel, Editor(s)

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