한국태양에너지학회:학술대회논문집
- 한국태양에너지학회 2012년도 춘계학술발표대회 논문집
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- Pages.457-462
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- 2012
조명 소프트웨어를 이용한 추적식 디쉬형 집광기의 배광분포 분석 및 자연채광 성능 예측
Analysis on Candela Distribution Curve of a Tracking Dish Concentrator and Daylighting Prediction using Lighting Programs
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Oh, Seung-Jin
(Dept. of Nuclear and Energy Engineering, Jeju National University) ;
- Han, Hyeon-Ju (Center for Energy Research, University of Nevada) ;
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Sin, Sang-Ung
(Dept. of Nuclear and Energy Engineering, Jeju National University) ;
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Chun, Won-Gee
(Dept. of Nuclear and Energy Engineering, Jeju National University)
- 발행 : 2012.03.29
초록
Daylighting software is an important component to predict the performance of daylighting system in advance of a field demonstration study with installing them in buildings. PHOTOPIA is a powerful software to generate a candela distribution curve(CDC) of an active daylighting system like a tracking dish concentrator. With PHOTOPIA, a set of candela distribution curves was generated under clear sky conditions and different solar altitude angles. The candela distribution curves were then imported to RADIANCE for rendering and analysis on the daylighting performance of a tracking dish concentrator when it installed in a actual class room without windows. As a result, the daylight collection efficiency of the dish concentrator was 68.4% when we assumed that there was no tracking error. It was found that candela(cd) and total lumens(lm) increased with solar altitude rising, whereas the distribution angle was fixed. The illuminance uniformity on the work plane in the class room was relatively low, 0.12, while the illuminance uniformity on the area of
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