Development and Testing of a Modular Sunlight Transport System Employing Free-Form Mirrors

Allen Jong-Woei Whang, Yi-Yung Chen, Min-Yih Leu, Wei-Chieh Tseng, Yu-Zheng Lin, Hao-Wen Chang, Chih-Hsien Tsai, Yu-Cheng Liang, Xin Zhang, Cheng-Tse Lin, Tzu-Chun Huang, Cheng-Ming Chang and Hsi-Chi Chen
Additional contact information
Allen Jong-Woei Whang: Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
Yi-Yung Chen: Graduate Institute of Color and Illumination Technology, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
Min-Yih Leu: Graduate Institute of Color and Illumination Technology, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
Wei-Chieh Tseng: Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
Yu-Zheng Lin: Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
Hao-Wen Chang: Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
Chih-Hsien Tsai: Graduate Institute of Electro-Optical Engineering, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
Yu-Cheng Liang: Graduate Institute of Electro-Optical Engineering, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
Xin Zhang: Graduate Institute of Electro-Optical Engineering, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
Cheng-Tse Lin: Graduate Institute of Electro-Optical Engineering, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
Tzu-Chun Huang: Graduate Institute of Electro-Optical Engineering, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
Cheng-Ming Chang: Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan
Hsi-Chi Chen: Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan

Energies, 2022, vol. 15, issue 2, 1-19

Abstract: The energy consumption of artificial lighting and its impacts on health have stimulated research into natural lighting systems. However, natural lighting system designs are mainly custom, making them costly and difficult to replicate. This study took an office space as a testing field in order to develop a highly adaptable and adjustable modular natural light illumination system. We divided the system into multiple module designs, demonstrated the use of simple development and fabrication processes and integrated a freeform reflector into the system. In creating a freeform mirror, the optical simulation results of the tested field were regressed (through polynomial regression) to achieve a uniformly illuminated plane, and a high-efficiency light-emitting system was produced. Finally, an active heliostat was used to collect sunlight, combined with actual manufacturing verification and measurement results, in order to create an excellent indoor lighting system. As a result, we presented a low-cost and easy-to-design natural light illumination system for the assisted lighting of office areas.

Keywords: freeform reflector; field test; modularization design; illumination system; daylighting; indoor lighting design (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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