二重窓に適用した外気導入型エアフローウインドウの断熱性能及び表面結露発生有無に関する数値的研究

摘要

本研究では二重窓に適用可能な外気導入型エアフローウィンドウを提案し，金属膜数及び蒸着施工位置による断熱性能，省エネ効果，室内給気温度，結露発生有無などについて数値的検討を行い，その有効性を明らかにした。検討結果から以下の知見が得られ，二重窓の空気層を換気経路として活用する外気導入型エアフローウィンドウの断熱性能向上効果があると考えられる。%It still remains heat loss and h^h risk of moisture condensation occurrence at glass of window because they have relatively poor insulating qualities and usually contribute the greatest heat loss in residential buildings, lb solve these problems, this paper proposed air supply type airflow window system applied to dual double-glazed window combine with a mechanical ventilator and a heat-recovery heat pump system. The aim of this paper is to evaluate the thermal insulation efficiency and probability of moisture condensation in the proposed system using numerical simulation, lb verify its thermal insulation efficiency and probability of moisture condensation, the temperature distribution and the dew-point temperature of the surface of window was calculated. The calculated results show the energy saving efficiency of the proposed system is enhanced approximately 113.10% by airflow effect in comparison with the dual double-pane window. It also shows that it is effective to use low emission film to avoid moisture condensation occurrence.