Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/57709

TitleA design of selective solar absorber for high temperature applications
Author(s)Al-Rjoub, A.
Rebouta, L.
Costa, P.
Barradas, N. P.
Alves, E.
Ferreira, P. J.
Abderrafi, K.
Matilainen, A.
Pischow, K.
KeywordsSolar selective absorber
Optical constants
Dielectric function
Sputtered CrAlSiNx /CrAlSiOyNx
Sputtered CrAlSiN /CrAlSiO N x y x
Issue date2018
PublisherElsevier
JournalSolar Energy
Citationhttps://doi.org/10.1016/j.solener.2018.04.052
Abstract(s)This study presents a design of multilayer solar selective absorber for high temperature applications. The optical stack of this absorber is composed of four layers deposited by magnetron sputtering on stainless steel substrates. The first is a back-reflector tungsten layer, which is followed by two absorption layers based on CrAlSiNx/ CrAlSiOyNx structure for phase interference. The final layer is an antireflection layer of SiAlOx. The design was theoretically modelled with SCOUT software using transmittance and reflectance curves of individual thin layers, which were deposited on glass substrates. The final design shows simultaneously high solar absorbance = 95.2 % and low emissivity ε= 9.8% (at 400 ºC) together with high thermal stability at 400 ºC, in air, and 600 ºC in vacuum for 650 h.
TypeArticle
URIhttp://hdl.handle.net/1822/57709
DOI10.1016/j.solener.2018.04.052
ISSN0038-092X
Publisher versionwww.elsevier.com/locate/solener
Peer-Reviewedyes
AccessOpen access
Appears in Collections:FUNCTIONAL AND SMART MATERIALS AND SURFACES FOR ADVANCED APPLICATIONS (2018 - ...)

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