Accelerating vapor condensation with daytime radiative cooling

Ming Zhou, Haomin Song, Xingyu Xu, Alireza Shahsafi, Zhenyang Xia, Zhenqiang Ma, Mikhail A. Kats, Jia Zhu, Boon S. Ooi, Qiaoqiang Gan, Zongfu Yu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

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.
Original languageEnglish (US)
Title of host publicationNew Concepts in Solar and Thermal Radiation Conversion II
PublisherSPIE
ISBN (Print)9781510629356
DOIs
StatePublished - Sep 9 2019

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