%0 Journal Article
%A Frederick C Winkelmann
%A Stephen E Selkowitz
%B Energy and Buildings
%D 1985
%G eng
%L LBL-18508
%P 271-286
%T Daylighting Simulation in the DOE-2 Building Energy Analysis Program
%V 8
%1 <p>Windows and Daylighting Group</p>
%2 LBL-18508
%X <p>A daylighting calculation has been intergrated grated into the DOE-2 building energy analysis computer program. Users can, for the first time in a widely-accepted, publicly-available program, determine the impact of daylight utilization on heating and cooling loads, energy use, energy cost, and peak electrical demand. We describe the algorithms which simulate hourly-varying interior illuminance, management of windows for sun and glare control, and the operation of electric lighting control systems. Sample DOE-2 daylighting output reports are presented and results of program validation against scale model illuminance measurements using the Lawrence Berkeley Laboratory sky simulator are discussed.</p>