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Proceedings Paper

Analysis of daylight performance of solar light pipes influenced by size and shape of sunlight captures
Author(s): Yanpeng Wu; Rendong Jin; Wenming Zhang; Li Liu
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Paper Abstract

Experimental investigations on three different sunlight captures with diameter 150mm, 212mm, 300mm were carried out under different conditions such as sunny conditions, cloudy conditions and overcast conditions and the two different size solar light pipes with diameter 360mm and 160mm under sunny conditions. The illuminance in the middle of the sunlight capture have relationship with its size, but not linear. To improve the efficiency of the solar light pipes, the structure and the performance of the sunlight capture must be enhanced. For example, University of Science and Technology Beijing Gymnasium, Beijing 2008 Olympic events of Judo and Taekwondo, 148 solar light pipes were installed with the diameter 530mm for each light pipe. Two sunlight captures with different shape were installed and tested. From the measuring results of the illuminance on the work plane of the gymnasium, the improvement sunlight captures have better effects with the size of augmenting and the machining of the internal surface at the same time, so that the refraction increased and the efficiency of solar light pipes improved. The better effects of supplementary lighting for the gymnasium have been achieved.

Paper Details

Date Published: 23 November 2009
PDF: 7 pages
Proc. SPIE 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 75081C (23 November 2009); doi: 10.1117/12.838140
Show Author Affiliations
Yanpeng Wu, Univ. of Science and Technology Beijing (China)
Rendong Jin, Univ. of Science and Technology Beijing (China)
Wenming Zhang, Univ. of Science and Technology Beijing (China)
Li Liu, Univ. of Science and Technology Beijing (China)


Published in SPIE Proceedings Vol. 7508:
2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications
YanBiao Liao; Anbo Wang; Tingyun Wang; Yukihiro Ishii, Editor(s)

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