Window 4.0: Documentation of Calculation Procedures
WINDOW 4.0 is a publicly available IBM PC compatible computer program developed by the Building Technologies Group at the Lawrence Berkeley Laboratory for calculating the thermal and optical properties necessary for heat transfer analyses of fenestration products. This report explains the calculation methods used in WINDOW 4.0 and is meant as a tool for those interested in understanding the procedures contained in WINDOW 4.0. All the calculations are discussed in the International System of units (SI).
Year of Publication
Building Technologies Department, Building Technology and Urban Systems Division, Windows and Envelope Materials
Building Façade Solutions, Measurements and Modeling, Windows and Daylighting, BTUS Windows and Daylighting