열교부위가 외피의 평균열관류율에 미치는 영향에 관한 연구

In domestic standards for energy saving building design, the thickness of insulation is usually taken into account to calculate average heat transmittance, without the consideration of thermal bridge effects. Hence, this study was carried out to investigate the impact of thermal bridges on the average heat transmittance of building envelope. A typical model of conventional thermal bridge ? the junction between window and wall - was analyzed by a tool for heat transfer analysis. The results show that thermal bridges have more impact on the average heat transmittance as the insulation becomes thicker. This implies that the enhanced thermal insulation can lead to the increased influence of thermal bridges. For this reason, the insulation performance of thermal bridges needs to be considered for average heat transmittance in order to improve thermal insulation of building envelope.