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Title: Radiative sky cooling: Fundamental principles, materials, and applications

Abstract

Radiative sky cooling cools an object on the earth by emitting thermal infrared radiation to the cold universe through the atmospheric window (8–13 μm). It consumes no electricity and has great potential to be explored for cooling of buildings, vehicles, solar cells, and even thermal power plants. Radiative sky cooling has been explored in the past few decades but limited to nighttime use only. Very recently, owing to the progress in nanophotonics and metamaterials, daytime radiative sky cooling to achieve subambient temperatures under direct sunlight has been experimentally demonstrated. More excitingly, the manufacturing of the daytime radiative sky cooling material by the roll-to-roll process makes large-scale deployment of the technology possible. This work reviews the fundamental principles of radiative sky cooling as well as the recent advances, from both materials and systems point of view. Potential applications in different scenarios are reviewed with special attention to technology viability and benefits. As the energy situation and environmental issues become more and more severe in the 21st century, we conclude radiative sky cooling can be explored for energy saving in buildings and vehicles, mitigating the urban heat island effect, resolving water and environmental issues, achieving more efficient power generation, and even fightingmore » against the global warming problem.« less

Authors:
ORCiD logo [1];  [2]; ORCiD logo [2];  [3]; ORCiD logo [4];  [2]; ORCiD logo [2]
  1. Univ. of Colorado, Boulder, CO (United States); Southeast Univ., Nanjing (China). School of Energy and Environment
  2. Univ. of Colorado, Boulder, CO (United States)
  3. Ruiling Inst. of Advanced Energy and Environmental Solutions, Ningbo (China)
  4. Univ. of Wyoming, Laramie, WY (United States)
Publication Date:
Research Org.:
Univ. of Colorado, Boulder, CO (United States)
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1613653
Alternate Identifier(s):
OSTI ID: 1507229
Grant/Contract Number:  
AR0000580
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Reviews
Additional Journal Information:
Journal Volume: 6; Journal Issue: 2; Journal ID: ISSN 1931-9401
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 14 SOLAR ENERGY; 54 ENVIRONMENTAL SCIENCES; Physics; Urban heat island; Atmospheric radiation; Passive radiator; Cooling technology; Infrared radiation; Solar energy; Energy efficiency; Metamaterials; Global warming; Building energy analysis

Citation Formats

Zhao, Dongliang, Aili, Ablimit, Zhai, Yao, Xu, Shaoyu, Tan, Gang, Yin, Xiaobo, and Yang, Ronggui. Radiative sky cooling: Fundamental principles, materials, and applications. United States: N. p., 2019. Web. doi:10.1063/1.5087281.
Zhao, Dongliang, Aili, Ablimit, Zhai, Yao, Xu, Shaoyu, Tan, Gang, Yin, Xiaobo, & Yang, Ronggui. Radiative sky cooling: Fundamental principles, materials, and applications. United States. https://doi.org/10.1063/1.5087281
Zhao, Dongliang, Aili, Ablimit, Zhai, Yao, Xu, Shaoyu, Tan, Gang, Yin, Xiaobo, and Yang, Ronggui. Tue . "Radiative sky cooling: Fundamental principles, materials, and applications". United States. https://doi.org/10.1063/1.5087281. https://www.osti.gov/servlets/purl/1613653.
@article{osti_1613653,
title = {Radiative sky cooling: Fundamental principles, materials, and applications},
author = {Zhao, Dongliang and Aili, Ablimit and Zhai, Yao and Xu, Shaoyu and Tan, Gang and Yin, Xiaobo and Yang, Ronggui},
abstractNote = {Radiative sky cooling cools an object on the earth by emitting thermal infrared radiation to the cold universe through the atmospheric window (8–13 μm). It consumes no electricity and has great potential to be explored for cooling of buildings, vehicles, solar cells, and even thermal power plants. Radiative sky cooling has been explored in the past few decades but limited to nighttime use only. Very recently, owing to the progress in nanophotonics and metamaterials, daytime radiative sky cooling to achieve subambient temperatures under direct sunlight has been experimentally demonstrated. More excitingly, the manufacturing of the daytime radiative sky cooling material by the roll-to-roll process makes large-scale deployment of the technology possible. This work reviews the fundamental principles of radiative sky cooling as well as the recent advances, from both materials and systems point of view. Potential applications in different scenarios are reviewed with special attention to technology viability and benefits. As the energy situation and environmental issues become more and more severe in the 21st century, we conclude radiative sky cooling can be explored for energy saving in buildings and vehicles, mitigating the urban heat island effect, resolving water and environmental issues, achieving more efficient power generation, and even fighting against the global warming problem.},
doi = {10.1063/1.5087281},
journal = {Applied Physics Reviews},
number = 2,
volume = 6,
place = {United States},
year = {Tue Apr 16 00:00:00 EDT 2019},
month = {Tue Apr 16 00:00:00 EDT 2019}
}

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Works referencing / citing this record:

Self-adaptive radiative cooling and solar heating based on a compound metasurface
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  • Wang, Wanlin; Zhao, Zhongping; Zou, Qixuan
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A Feasibility Study on the Use of an Atmospheric Water Generator (AWG) for the Harvesting of Fresh Water in a Semi-Arid Region Affected by Mining Pollution
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Consideration of cooling loss process of the emitter for radiative cooling
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A Multilayer Emitter Close to Ideal Solar Reflectance for Efficient Daytime Radiative Cooling
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A Multilayer Emitter Close to Ideal Solar Reflectance for Efficient Daytime Radiative Cooling
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