Spectral selectivity or nonimaging optics: Which to use for radiative cooling?

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The need to cool people in a warming world has led to renewed interest in radiative cooling in recent years. Most recent research has focused on the development of spectrum-selective materials designed to radiate in the atmospheric window while suppressing absorption of radiation outside of this window. However the alternative approach of using angular selectivity, via the inclusion of nonimaging optical components to restrict the cooling element's field of view, has been neglected. Here we argue for the value of nonimaging optics in the design of practical radiative cooling systems.

Original languageBritish English
Title of host publicationNonimaging Optics
Subtitle of host publicationEfficient Design for Illumination and Solar Concentration XV
EditorsEli Yablonovitch, Roland Winston
PublisherSPIE
ISBN (Electronic)9781510620872
DOIs
StatePublished - 2018
EventNonimaging Optics: Efficient Design for Illumination and Solar Concentration XV 2018 - San Diego, United States
Duration: 19 Aug 201820 Aug 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10758
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNonimaging Optics: Efficient Design for Illumination and Solar Concentration XV 2018
Country/TerritoryUnited States
CitySan Diego
Period19/08/1820/08/18

Keywords

  • Compound parabolic concentrator
  • Heat transfer
  • Nonimaging optics
  • Radiative cooling

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