프리즘 태양광 채광장치의 설계 및 성능분석 연구

Abstract

We designed prism solar daylighting system being noticed for its energy-saving effect and as an eco-friendly energy source and analyzed its performance in this study. Our study was to design a dome-shaped prism solar daylighting system for omnidirectional lighting, to find out the optimum angle of the prism with the maximum efficiency and to compare its energy efficiencies. To design prism solar daylighting systems, a lighting design program which is capable of both designing a lighting system and performing its optical analysis was used. In addition, to measure and analyze the solar daylighting systems, Solar Tracking Utility which provides the specific daylight at a certain place or a certain time range was used. In the experiments, daylights' positions varied with seasons, and the seasonal variation of the amounts of light flows into the daylighting system. As you can see in this study, the efficiency test using Solar Tracking enables efficiency test and optical analysis of solar daylighting systems without actual prototypes. Consequently, we could realize the optimum prism angle with minimum light loss, analyze the optical characteristics of prism solar daylighting systems, and design a dome type Fresnel lens with maximum efficiency.