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.
Double-skinneDSiding (DS) and its buffer zone on thermal environments of both new and old wooden structures found throughout Japan is examined herein. Our simulation shows electricity usage drops 20% during the summer with DS. During the winter, DS helps raise the room temperature by almost 5 C. During the intermediate seasons, the heat in the buffer zone (30W/m 2) is released outside. Through our theoretical and experimental simulations, we verified that DS helps reduce electricity needed to heat and cool buildings in Tokyo, heat buildings in winter in Sapporo, and cool buildings in summer in Naha.
Use of Cross Laminated Timber in comparison to RC in public facilities in seven climatic regions is examined.Room temperature from two CLT buildings were taken, and findings showed changes in room and globe temperatures were gentle, which assured congruency with computer simulations. Though the cooling load was similar, the heating load was significantly less for CLT buildings.By changing CLT thickness, The difference in cooling load is small. However, the heating load decreases as the thickness increases. The thickness of CLT 60 mm or more is more effective than general RC construction.
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