Uniformly Illuminated Efficient Daylighting System

Irfan Ullah, Seoyong Shin

Department of Information and Communication Engineering, Myongji University, Yongin 449-728, South Korea..

DOI: 10.4236/sgre.2013.42020                

Abstract

Different approaches have been introduced for the daylighting system to reduce energy consumption, but they were not populated due to complex, high cost, and insufficient designs. There has been a recent problem in achieving uniform distribution of sunlight at a destination deep inside the building. Therefore, we propose a system to achieve high illumination by illuminating the surface of the absorber (optical fibers) uniformly. To capture sunlight, parabolic reflector and Fresnel lens are used. Different reflectors and lenses are considered, compared, and investigated to direct uniform light, which solves the heat problem, into the optical fibers. In addition, this study includes comparison between fiber-based daylighting systems. The proposed system has been verified through simulation and experimental results.

Keywords

Uniform Illumination; Daylighting System; Optical Fiber; Solar Concentrator

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	A. Dunne, “Some Effects of the Quality of Light on Health,” Journal of Orthomolecular Medicine, Vol. 4, No. 4, 1989, pp. 229-232.
[2]	I. Ullah and S. Shin, “Development of Optical Fiber Based Daylighting System with Uniform Illumination,” Journal of the Optical Society of Korea, Vol. 16, No. 3, 2012, pp. 247-255. doi:10.3807/JOSK.2012.16.3.247
[3]	I. Ullah and S. Shin, “Development of Optical Fiber Based Daylighting System with Collimated Illumination,” Proceedings of the 2012 17th Opto-Electronics and Communications Conference (OECC), Busan, 2-6 July 2012, pp. 596-597.
[4]	V. E. Gilmore, “Sun Flower over Tokyo,” Popular Science, Bonnier Corporation, New York, 1988.
[5]	C. Tsuei, W. Sun and C. Kuo, “Hybrid Sunlight/LED Illumination and Renewable Solar Energy Saving Concepts for Indoor Lighting,” Optics Express, Vol. 18, No. S4, 2010, pp. A640-A653. doi:10.1364/OE.18.00A640
[6]	P. Nostell, A. Roos and B. Karlsson, “Ageing of Solar Booster Reflector Materials,” Solar Energy Materials and Solar Cells, Vol. 54, No. 1-4, 1998, pp. 235-246. doi:10.1016/S0927-0248(98)00075-0
[7]	H. Abdul-Rahman and C. Wang, “Limitations in Current Day Lighting Related Solar Concentration Devices: A Critical Review,” International Journal of the Physical Sciences, Vol. 5, No. 18, 2010, pp. 2730-2756.