This study uses the ZEH proposed by Kanto-Gakuin University in the “ENEMANE HOUSE 2015” project by ANRE, METI of Japan. This report provides thermal and light environment measurements, and clarifies how a south-facing buffer space using partitioning and outer skin members influences heat load. The heat load is calculated from the weather data of the 2010s, and the ZEH’s applicability was examined in seven Japanese local regions.
High heat partitioning maintains the heat load unaffected even with glass used for the outer skin members. The ZEH is effective in heating load, in Niigata and Fukuoka, energy-saving reference 5 and 7.