태양광 추적형 채광기의 광 특성 분석 및 설계에 관한 연구

Abstract

We studied on not only the design of a solar tracking sunlight concentrator comprised of a compound parabolic and a solar cell but the analysis of its optical properties. Recently, A lighting system with a variety of daylighting devices has attracted a lot of attention to energy conservation as sunlight is one of the eco-friendly energy source. Our study designed one of the daylighting devices which named CPC(Compound Parabolic Concentrator) as well as simulated solar tracking with two types of tracker under the same condition in order to check out which type of the concentrators has more efficiency. Based on the theory related to sunlight concentrator we found out the properties of CPC such as an attendance angle that is the maximum angle at which incoming sunlight can be captured by a solar concentrator. after that, we designed the appropriate shape of CPC and simulated solar tracking with both 1-axis and 2-axis tracker. For 2-axis, we shouldn't need any condition but seasonal variations in zenith angles. For 1-axis, we tracked sunlight with East-West axis tracker to collect more sunlight since Sun moves from East to West. also, we set each North-South Tilt which has the same angle as seasonal zenith angles using the equation of the sun position to compare the amount of sunlight passing through concentrator. Consequently, you can see the study conclusion in the third chapter which shows efficiency comparison between 1-axis trace and 2-axis trace in figures and tables as well as analysis of the optical properties of the solar tracking sunlight concentrator that we designed.