Average Transmittance Factors for Multiple Glazed Window Systems

Average Transmittance Factors for Multiple Glazed Window Systems

TitleAverage Transmittance Factors for Multiple Glazed Window Systems
Publication TypeConference Paper
Year of Publication1979
AuthorsStephen E Selkowitz, Michael D Rubin, Richard Creswick
Conference Name4th National Passive Solar Conference
Call NumberLBL-9654
Abstract

Multiple glazing is the most common static method of improving the insulating properties of windows. For simplified calculations of solar heat gain a single value for transmittance is chosen, usually the normal transmittance. Whenever such a method is applied, the normal transmittance should be replaced by an averaged value which takes into account the daily and seasonal variations of weather and the angle of incidence.

LBNL Report Number

LBL-9654