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Proceedings Paper

Optical Selectivity Of Oxidized Stainless Steel
Author(s): Bjorn Karlsson; Thommy Karlsson; Carl G. Ribbing
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Paper Abstract

The possibility to use oxidized stainless steel as the absorbing surface in solar thermal collectors is evaluated. In this evaluation the influence of the Fe203, Cr203 and a mixed oxide obtained in chemical oxidation as well as the steel base, are studied separately. Conventional optical theory is used for the calculation of the resulting tandem reflectance which aiveg good agreement with related experimental curves. We can understand the high selectivity for the chemical oxide as the combined effect of the moderate reflectance of the ferritic stainless steel, a n-value as small as 1.4 and a sufficiently strong tail in k into the NIR-region for the oxide-layer.

Paper Details

Date Published: 12 April 1982
PDF: 7 pages
Proc. SPIE 0324, Optical Coatings for Energy Efficiency and Solar Applications, (12 April 1982); doi: 10.1117/12.933268
Show Author Affiliations
Bjorn Karlsson, Uppsala University (Sweden)
Thommy Karlsson, Uppsala University (Sweden)
Carl G. Ribbing, Uppsala University (Sweden)

Published in SPIE Proceedings Vol. 0324:
Optical Coatings for Energy Efficiency and Solar Applications
Carl M. Lampert, Editor(s)

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