| 요약2 |
The photovoltaic system has a difference performance according to the regional location and array tilt angle. In out country, regional insolation has a different characteristic from city to city. Moreover, when installing the photovoltaic system, array angle is one of the important factors which affects the performance of the amount of electric energy produced by the photovoltaic system. Therefore, in this study six cities in our country are selected and 5 array tile angles (15, 30, 45, 60, 90°) are compared to evaluate the economic viability of photovoltaic system in buildings by calculating payback period. |