Radiative Cooling: Principles, Progress, and Potentials

The recent progress on radiative cooling reveals its potential for applications in highly efficient passive cooling. This approach utilizes the maximized emission of infrared thermal radiation through the atmospheric window for releasing heat and minimized absorption of incoming atmospheric radiatio...

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Main Authors:	Hossain, Md. Muntasir, Gu, Min
Format:	Online
Language:	English
Published:	John Wiley and Sons Inc. 2016
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5067572/

id	pubmed-5067572
recordtype	oai_dc
spelling	pubmed-50675722016-11-01 Radiative Cooling: Principles, Progress, and Potentials Hossain, Md. Muntasir Gu, Min Reviews The recent progress on radiative cooling reveals its potential for applications in highly efficient passive cooling. This approach utilizes the maximized emission of infrared thermal radiation through the atmospheric window for releasing heat and minimized absorption of incoming atmospheric radiation. These simultaneous processes can lead to a device temperature substantially below the ambient temperature. Although the application of radiative cooling for nighttime cooling was demonstrated a few decades ago, significant cooling under direct sunlight has been achieved only recently, indicating its potential as a practical passive cooler during the day. In this article, the basic principles of radiative cooling and its performance characteristics for nonradiative contributions, solar radiation, and atmospheric conditions are discussed. The recent advancements over the traditional approaches and their material and structural characteristics are outlined. The key characteristics of the thermal radiators and solar reflectors of the current state‐of‐the‐art radiative coolers are evaluated and their benchmarks are remarked for the peak cooling ability. The scopes for further improvements on radiative cooling efficiency for optimized device characteristics are also theoretically estimated. John Wiley and Sons Inc. 2016-02-04 /pmc/articles/PMC5067572/ /pubmed/27812478 http://dx.doi.org/10.1002/advs.201500360 Text en © 2016 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Hossain, Md. Muntasir Gu, Min
spellingShingle	Hossain, Md. Muntasir Gu, Min Radiative Cooling: Principles, Progress, and Potentials
author_facet	Hossain, Md. Muntasir Gu, Min
author_sort	Hossain, Md. Muntasir
title	Radiative Cooling: Principles, Progress, and Potentials
title_short	Radiative Cooling: Principles, Progress, and Potentials
title_full	Radiative Cooling: Principles, Progress, and Potentials
title_fullStr	Radiative Cooling: Principles, Progress, and Potentials
title_full_unstemmed	Radiative Cooling: Principles, Progress, and Potentials
title_sort	radiative cooling: principles, progress, and potentials
description	The recent progress on radiative cooling reveals its potential for applications in highly efficient passive cooling. This approach utilizes the maximized emission of infrared thermal radiation through the atmospheric window for releasing heat and minimized absorption of incoming atmospheric radiation. These simultaneous processes can lead to a device temperature substantially below the ambient temperature. Although the application of radiative cooling for nighttime cooling was demonstrated a few decades ago, significant cooling under direct sunlight has been achieved only recently, indicating its potential as a practical passive cooler during the day. In this article, the basic principles of radiative cooling and its performance characteristics for nonradiative contributions, solar radiation, and atmospheric conditions are discussed. The recent advancements over the traditional approaches and their material and structural characteristics are outlined. The key characteristics of the thermal radiators and solar reflectors of the current state‐of‐the‐art radiative coolers are evaluated and their benchmarks are remarked for the peak cooling ability. The scopes for further improvements on radiative cooling efficiency for optimized device characteristics are also theoretically estimated.
publisher	John Wiley and Sons Inc.
publishDate	2016
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5067572/
_version_	1613687165623992320

Radiative Cooling: Principles, Progress, and Potentials

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