Evaluate heat loss through windows by using Guarded Hot Box (GHB)

Abstract

Windows are major part of construction design providing light, air and visibility and protect it from dust, it's also provide comfortable environment for occupants. The good design for window according to the heat losses is effect on the energy performance for constructions. Houses losses 15% and gain 50% from the heat through windows. In nowadays design of windows is very important to conserve the energy and to reduce CO2 emission. In this paper we calculate heat loss by using Guarded Hot Box (GHB) for different types of windows. Thermal transmittance has been measured by finding thermal resistance according to the ASTM recommendations by using Guarded Hot Box (GHB). The results of heat loss which have been obtained by using guarded Hot Box (GHB) with different windows were close to the manufacturing results and references.