| 논문명 |
광선추적기법을 활용한 곡면형 광선반시스템 설계 및 채광성능 평가 / Evaluation of Daylighting Performance and Design of a Curved-Lightshelf by the Ray Tracing Method |
| 수록사항 |
태양에너지(한국태양에너지학회 논문집), v.31 n.4 (2011-08) |
| 주제어 |
자연채광 ; 곡면형-광선반 ; 시뮬레이션 ; 실내조도 ; 휘도 ; Perez천공모델 ; 균제도 ; Daylight ; Curved-Lightshelf ; Simulation ; Indoor Illunimace ; Luminance ; Perez sky ; Uniform ratio of Illuminance |
| 요약2 |
The lightshelf system reduces intense illumination levels of indoor from direct sun light and reflect to lead diffused light into indoor deeply. This study aims to design a curved-lightshelf by a ray tracing method and evaluate the daylighting performance of window integrated with the curved-lightshelf by computer simulations. For this purpose, evaluation test model was designed for the experiments to validate the simulation model, and the curved-lightshelf was designed by the ray tracing method using Ecotect. After the office model was designed using 3D simulation, the average indoor illuminance, luminance and distribution of illuminance were evaluated by simulation which has a algorithm of Radiosity and Ray-Tracing method under four different cases(case1; no lightshelf, case2; Flat board, case3; tilted at 30ºangle, case4; the curved-lightshelf). As results, it turns out that case1 showed higher average illuminance and case4 was more uniformly distributed than case2 and case3, In addition average luminance of case1 was also lower. indicating that the curved-lightshelf would reduce the possibility of the glare, while maintaining the sufficient daylight level. |
