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22 October 1993 Optical and thermal characterization of advanced windows with low-e coatings
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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.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);

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