Abstract
In this report, the temperature of basement structure containing heat storage tank was analyzed for the condition of a cold district(Sapporo) and was compared with that of a mild district(Tokyo). In a cold district, the annual average temperature of water of heat storage tank is higher than soil temperature. Therefore the rising of temperature of soil sorrounding the building during a long period of time is expected. Unsteady static heat conduction analysis was carried out for 50 years. In the analysis the parameters were heat insulating board thickness(D=O, 50mm) and thermal diffusivity of soil(a=0.0007, 0.0013, 0.0023m^2/h). As a result of the analysis, in a cold district the difference of temperature between outer wall and footing beam is larger than that of a mild district. Therefore the thermal stress of outer wall in a cold district is greater than that of a mild district. In a cold district the temperture of basement structure rises a little during a period of 50 years, but in a mild district it remains almost constant.
