Optical and thermal characterization of advanced windows with low-e coatings

Arne Roos; Bjorn Karlsson

doi:10.1117/12.161948

22 October 1993 Optical and thermal characterization of advanced windows with low-e coatings

Arne Roos, Bjorn Karlsson

Proceedings Volume 2017, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XII; (1993) https://doi.org/10.1117/12.161948
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

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.

Citation Download Citation

Arne Roos and Bjorn Karlsson "Optical and thermal characterization of advanced windows with low-e coatings", Proc. SPIE 2017, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XII, (22 October 1993); https://doi.org/10.1117/12.161948

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