Solar Optical Properties of Windows

TitleSolar Optical Properties of Windows
Publication TypeJournal Article
Year of Publication1982
AuthorsMichael D Rubin
JournalInternational Journal of Energy Research
Volume6
Pagination123-133
Call NumberLBL-12246
Abstract

To properly calculate dynamic solar gain in buildings, one must know the optical properties of the window in detail. In this paper, we develop a complete set of calculation procedures for determining the solar transmittance, reflectance, and absorptance of a window composed of an arbitrary number of partially transparent layers. Any layer may have a thin-film multilayer coating, such as an anti-reflection coating for increasing solar transmittance, a solar control film for reducing solar heat gain, or a transparent heat-reflecting mirror for improving thermal resistance. The results of sample calculations are given over the range of incidence angles for conventional and advanced energy conserving window designs.

LBNL Report Number

LBL-12246