抄録
In order to obtain the fundamental data on the thermal performance of semi-underground house, long-term field measurement of heating load was made using the twin-type test house constructed on the campus of Tohoku University in Sendai from January 11, 1988 to November 26, 1989, as well as computer simulation using two-dimensional finite element method. The indoor air temperatures of the test rooms were controled not to be lower than 20℃ by space heating. Main findings are summarized as follows : 1. Heating load through one heating season was about 1. 4 Gcal/season. 2. A horizontal insulation in the earth around the semi-underground room reduced about 10 % of heating load.