주거용 건물의 창면적 변화에 따른 창의 열관류율 및 에너지요구량 분석

The window insulation is determined by the performance and the weighted area of glass, frame and spacer. Nevertheless, the possibility that the window performance is changes by the window area has been ignored in previous studies. This study analyzed the U-factor according to the change of window area mainly used for the residential building. We also analyzed the change level of energy demand according to the energy performance level at buildings.