창호의 형태별 기밀특성에 관한 연구

Building energy conversations is one of the most important issues in recent years. The extremely much rates among the energy loss on the buildings are depend on windows and doors. Therefore windows are required function of heat loss prevention. Among the functions, Air-tightness is very closed connect with thermal performance. accordingly in this study, the fundamental data of proper air-tightness on windows classified by opening type, material and section.