The testing plans, procedures, and results of an experiment are revealed concerning the thermal performance and variable factors of unvented double windows, their heat transmission and inner surface temperature. Data are given to help improve the design and development of standards for the thermal performance of windows. Building humidity, window…

Solar heat gains (radiation) and its effects on the building environment are discussed, in conjunction with the proper and improper use of large glass areas in the exterior walls of buildings in North America. The difficulties of solar heat gain and of controlling natural light and glare are outlined and said to influence building comfort and air…