부하계산을 위한 창호의 열관류율 설정 ( Determination of overall heat transfer coefficient of windows. )

Current problems in investigating thermal performance of windows in relation to building energy conservation are (1) using k value of glass itself for determination of thermal performance of a window (2) even if effects of thermal performance of the frame are considered, simple calibration by those general performance is done. So, in this study, heat flow density and others through windows were measured by using the Double Climatic Test Chamber and other equipments to determine recommended values of overall heat transfer coefficient of windows. As a result, it was revealed that not only thermal performance of glass but also that of frame in calculating thermal load by windows should be considered.