태양에너지의 효율적 이용에 관한 연구 :방위각 및 경사각별 일사량 분포도 분석

This research is carried out to provide fundamental data for the design of solar photovoltaic systems. Methodologically, the solar radiation installations from 10 different pyreheliometers are measured, which are set up at 6 and 4 different levels of tilts and azimuth, respectively. Maximum of a yearly accumulated solar radiation is 1,569.8kWh/㎡·year with a tilt angle of 30° and an azimuth angle of 0°(south), 1,558.5 kWh/㎡·year with an azimuth angle of 0°(south) in combination of a tilt angle of 35°. This paper estimates that in designing fixed solar photovoltaic systems with a tilt angle of 12.5°∼50°(south) and a tilt angle of 35° in combination of an azimuth angle of S45°W∼S45°E, a tilt angle and an azimuth angle will cause a maximum 6.8% and 9.9% of efficiency variation respectively, depending on a installed solar module’s angle and direction.