DESIGNWORKS Vol.23

20/36

In this religious building, which requires long life, it was essential to have a scheme that does not rely on air conditioning plant as much as possible. Taking into consideration the local characteristics of Ota City in Gumma Prefecture with its cold strong winds in winter and hot summers due to foehn winds, in summer the underside of the large roof is ventilated to insulate the building from radiative heat, and in winter an “absorptive large roof” is designed using solar heat as residual heat for room heating. (Satoko Miyamoto)市街地への開放性及び威圧感のないボリュームを実現する大屋根14Environmental Scheme Using a Large Roof大屋根を活用した環境計画長寿命を要求される宗教建築では、可能な限り空気調和設備に頼らない仕組みが必須であった。冬はからっ風、夏はフェーン現象による猛暑となる群馬県太田市の地域性を考慮して、夏は大屋根裏を換気して輻射熱を遮断し、冬は太陽熱を暖房の余熱とする「呼吸する大屋根」を実現している。(宮本 聡子)Works18