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Application of heliostat in interior sunlight illumination for large buildings

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  • Song, Jifeng
  • Luo, Geng
  • Li, Lei
  • Tong, Kai
  • Yang, Yongping
  • Zhao, Jin

Abstract

Heliostat daylighting systems, used to transmit sunlight deep into rooms where natural light cannot reach, are increasingly applied in buildings. A roof-mounted heliostat with an area of 22.95 m2 was developed in this work to verify the feasibility of high flux and long distance daylighting in large building interior. The developed heliostat system consists of a heliostat, a secondary reflector, and glass windows forming the light path within the building. The problem of gravitational deformation of the steel beams base of the heliostat was solved by a rectification algorithm embedded into the computer program, to realize vertical daylighting. The spectrum and chromaticity of the heliostat daylighting system developed was measured, and the results verify the good visual quality of the interior illumination. The light transmission distance is more than 70 m, and the system can provide a level of 20–80 klux daylighting illuminance in the daytime. An economic analysis was carried out, and data indicates a good cost-effectiveness of the heliostat daylighting system developed. It is hoped that this research will be of some reference value to the design of heliostat daylighting systems in large buildings.

Suggested Citation

  • Song, Jifeng & Luo, Geng & Li, Lei & Tong, Kai & Yang, Yongping & Zhao, Jin, 2018. "Application of heliostat in interior sunlight illumination for large buildings," Renewable Energy, Elsevier, vol. 121(C), pages 19-27.
    • Handle: RePEc:eee:renene:v:121:y:2018:i:c:p:19-27
    DOI: 10.1016/j.renene.2018.01.011
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    References listed on IDEAS

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    1. Close, Josie, 1996. "Optimising daylighting in high-rise commercial developments in SE Asia and the use of computer programmes as a design tool," Renewable Energy, Elsevier, vol. 8(1), pages 206-209.
    2. Kandilli, Canan & Külahlı, Gürhan, 2017. "Performance analysis of a concentrated solar energy for lighting-power generation combined system based on spectral beam splitting," Renewable Energy, Elsevier, vol. 101(C), pages 713-727.
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    Cited by:

    1. Song, Jifeng & Wu, Zhaoxuan & Wang, Juntao & Zhang, Kexin & Wang, Kai & Liu, Kunhao & Duan, Liqiang & Hou, Hongjuan, 2021. "Application of highly concentrated sunlight transmission and daylighting indoor via plastic optical fibers with comprehensive cooling approaches," Renewable Energy, Elsevier, vol. 180(C), pages 1391-1404.
    2. Antonio Peña-García & Ferdinando Salata & Iacopo Golasi, 2019. "Decrease of the Maximum Speed in Highway Tunnels as a Measure to Foster Energy Savings and Sustainability," Energies, MDPI, vol. 12(4), pages 1-11, February.
    3. Jifeng Song & Bizuayehu Bogale Dessie & Longyu Gao, 2023. "Analysis and Comparison of Daylighting Technologies: Light Pipe, Optical Fiber, and Heliostat," Sustainability, MDPI, vol. 15(14), pages 1-30, July.
    4. Gao, Shaohua & Xu, Xiping & Yin, Peng, 2020. "Design of a planar solar illumination system to bring natural light into the building core," Renewable Energy, Elsevier, vol. 150(C), pages 1178-1186.
    5. Kunhao Liu & Lianglin Zou & Yuanlong Li & Kai Wang & Haiyu Wang & Jifeng Song, 2023. "Measurement and Analysis of Light Leakage in Plastic Optical Fiber Daylighting System," Sustainability, MDPI, vol. 15(4), pages 1-14, February.
    6. Allen Jong-Woei Whang & Tsai-Hsien Yang & Zhong-Hao Deng & Yi-Yung Chen & Wei-Chieh Tseng & Chun-Han Chou, 2019. "A Review of Daylighting System: For Prototype Systems Performance and Development," Energies, MDPI, vol. 12(15), pages 1-34, July.

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