프레임 비율 및 유리의 단열 성능이 열관류율 변화에 미치는 영향

The curtain wall system is widely improved in high-rise buildings because of its many advantages. As increasing demands for the improvement of building energy efficiency, the insulation performance of the glass and frame in the curtain wall system has been significantly considered. The heat transmittance of the glass has been improved by using the high-efficiency products but those of the frame is still needed to be improved alternatives. Even though the thermal transmittance of curtain wall system depends on the frame ratios, it is not considered in evaluating heat transmittance. This paper presents the investigation of present condition in the curtain wall frame ratios in the constructed buildings and analyzes the difference of heat transmittance according to the frame ratios.