| 요약2 |
On early fall, blackout hit Korea nationwide. Unseasonal heat wave had caused the situation. That is the case showing the urgency of the Global warming and necessity of the energy saving. In 2010, it was reported that the power use amount of the building reached 47% of the total amount of power use. The purpose of this study is to propose a optimal design of overhangs in building. For this study, PHPP 2007 is used for simulation analysis which has variables, such aas lengths of a overhang's projection, its gap between a window and the overhang. And weather data of Chungju is used. As a result, in the fixed gap between a window and the overhang, it was found that it was most affected by the projection's length and incident angle of the sun. And it was found that input condition to optimize the result was not annual maximum incident angle but incident angle of the end of August. The optimal angle was 60.4∼64.4 degrees and minimum energy demand was 2005∼2006kWh/a. |