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1. 发明申请

WO2022024064A1 SPECTRALLY SELECTIVE SOLAR ABSORBER COATING 审中-公开
公开(公告)号：WO2022024064A1
公开(公告)日：2022-02-03
申请号：PCT/IB2021/056974
申请日：2021-07-30
申请人： AGENZIA NAZIONALE PER LE NUOVE TECNOLOGIE, L'ENERGIA E LO SVILUPPO ECONOMICO SOSTENIBILE (ENEA)
发明人： ESPOSITO, Salvatore , D'ANGELO, Antonio , DILETTO, Claudia , GRADITI, Giorgio , GUGLIELMO, Antonio
IPC分类号： F24S70/225
摘要： A spectrally selective solar absorber coating (2) for a receiver of a solar thermal or thermodynamic system and comprising in sequence: • - an infrared reflecting multilayer structure (21, 22); • - an absorbing multilayer cermet structure (23); and • - an anti-reflection multilayer structure (24). The infrared reflecting multilayer structure (21, 22) comprises: • (i) an infrared reflecting base layer (21) with barrier and adhesion layer functions, arranged in contact with a substrate (1) which is part of the receiver and consists of one or more transition metals selected from among Ti, V, Cr, Zr, Nb, Hf, Ta, Mo, W or of a nitride of one or more of said transition metals; and • (ii) a multifunction structure (22), which is placed on the infrared reflecting base layer (21) and comprising at least: • - multiple additional infrared reflecting layers (22a) with the function of increasing the infrared reflectance of the absorber coating (2), each of which consists of a metal selected from among Au, Ag, Cu, Al, Mo and W, and • - multiple stabilizing layers (22b) of the additional infrared reflecting layer (22a), each of which consists of ■ a ceramic material; or ■ a cermet material; or ■ a material consisting of one or more transition metals or of a nitride of one or more transition metals. The multiple additional infrared reflecting layers (22a) and the multiple stabilizing layers (22b) are arranged so that one reflecting layer alternates with one or more stabilizing layers. One of the stabilizing layers (22b) is placed in contact with the absorbing multilayer cermet structure (23).

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