A simulation model was a detached house. The plan and elevation views are shown in Fig. 6, the building material specifications in Fig.7, and the schedules of various items in Fig.8. The areas for the analysis were Sapporo(43°4’N, 141°21’E), a cold weather region, Tokyo(35°39’N, 139°41’E) and Osaka(34°41’N, 135°30’E), mild weather regions, and Naha(26°12’N, 127°41’E), a hot weather region. The Standard year of expanded AMeDAS weather data 1981-2000 for each area were used.

Natural room temperature and thermal load when the roof is assumed to be autonomous perspiration (autonomous perspiration mode) were compared with those of non-perspiration mode in summer (Sapporo: from July to August, Tokyo and Osaka: June — September, Naha: May — October). The specific sense temperature of the autonomous perspiration mode was set to five kinds (20, 25, 30, 35 and 40 °С). The air-conditioning case (living & dining room, master room and children room are air — conditioned) shown in Fig.8 and un-air-conditioning case (all rooms un-air-conditioned, i. e., natural room temperature calculation case) were both investigated, and in the former case, the room set temperature and humidity were 27°C, 60% during the cooling period. The areal supply water temperature, changed monthly, was assumed to be equal to the monthly average outdoor air temperature in each area.