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Proceedings Paper

Optical and thermal characterization of advanced windows with low-e coatings
Author(s): Arne Roos; Bjorn Karlsson
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Paper Abstract

Optical characterization of windows with advanced glazing materials is discussed. Measurements at oblique incidence introduce errors, which make it difficult to properly estimate the solar energy performance of a window unit with several panes. The influence of experimental errors of the individual glazing products on the total performance of a window is discussed. A new formula for the evaluation of the annual energy balance of a window is presented. The total heat flow through the window during the heating season, or the total cooling load during the summer can be estimated with this formula. The method is useful for the comparison of different window configurations and for the evaluation of their annual energy performance.

Paper Details

Date Published: 22 October 1993
PDF: 11 pages
Proc. SPIE 2017, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XII, (22 October 1993); doi: 10.1117/12.161948
Show Author Affiliations
Arne Roos, Uppsala Univ. (Sweden)
Bjorn Karlsson, Vattenfall Utveckling AB (Sweden)


Published in SPIE Proceedings Vol. 2017:
Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XII
Carl M. Lampert, Editor(s)

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