Tunable daytime passive radiative cooling based on a broadband angle selective low-pass filter

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00004860
URN to cite this document: urn:nbn:de:bvb:703-epub-4860-7

Title data

Pech-May, Nelson W. ; Retsch, Markus:
Tunable daytime passive radiative cooling based on a broadband angle selective low-pass filter.
In: Nanoscale Advances. Vol. 2 (2020) Issue 1 . - pp. 249-255.
ISSN 2516-0230
DOI der Verlagsversion: https://doi.org/10.1039/c9na00557a

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Related URLs

• https://pubs.rsc.org/en/content/articlel...

Abstract

Passive daytime cooling could contribute to the reduction of our global energy consumption. It is capable of cooling materials down to below ambient temperatures without the necessity of any additional input energy. Yet, current devices and concepts all lack the possibility to switch the cooling properties on and off. Here, we introduce dynamic control for passive radiative cooling during daytime. Using an angle- selective solar filter on top of a nocturnal passive radiator allows tuning the surface temperature of the latter in a wide range by just tilting the filter from normal incidence up to around 23°. This angle-selective filter is based on optically engineered, one-dimensional photonic crystal structures. We use numerical simulations to investigate the feasibility of a switchable low-pass filter/emitter device.

Further data

Item Type:	Article in a journal
Keywords:	passive cooling; angle-selective transmission; Bragg stack; Infrared transparent nanophotonics
DDC Subjects:	500 Science > 530 Physics 500 Science > 540 Chemistry
Institutions of the University:	Profile Fields > Advanced Fields > Polymer and Colloid Science Profile Fields > Advanced Fields > Advanced Materials Profile Fields > Emerging Fields > Energy Research and Energy Technology Research Institutions > Central research institutes > Bayreuth Center for Colloids and Interfaces - BZKG Research Institutions > EU Research Projects > VISIRday Profile Fields Profile Fields > Advanced Fields Profile Fields > Emerging Fields Research Institutions Research Institutions > Central research institutes Research Institutions > EU Research Projects
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-4860-7
Date Deposited:	22 May 2020 06:29
Last Modified:	22 May 2020 06:29
URI:	https://epub.uni-bayreuth.de/id/eprint/4860

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