抄録
Direct solar heat gain (hereafter DSHG) is expected to decrease heating energy consumption of housings with airtightness and thick insulation in northern region. It is important to calculate precise solar heat gain through window, since the values influence on the strategy whether we should use DSHG or not. In this report, we suggest the method to calculate solar radiation in a site where build a building. Then the relationship between thermal environment and heating energy is analyzed by using the climate data combined with GIS data. The results identify that southern sky factor is able to explain an effect of DSHG.
