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A Large Scale Daylighting System Based on a Stepped Thickness Waveguide

Author

Listed:
  • Ngoc Hai Vu

    (Department of Information and Communication Engineering, Myongji University, San 38-2 Nam-dong, Yongin 449728, Korea)

  • Seoyong Shin

    (Department of Information and Communication Engineering, Myongji University, San 38-2 Nam-dong, Yongin 449728, Korea)

Abstract

This paper presents a study on the use of optical fiber and a solar concentrator for a building daylighting system. Daylighting is essential for improving indoor environments and reducing electric lighting power consumption in office buildings. Traditionally, optical fiber daylighting systems were implemented only on a small scale. More complicated technologies are required for more amounts of daylight over further distance via a smaller light guider. The proposed solar lighting system with optical fiber is composed of an array of linear Fresnel lenses and a stepped thickness waveguide. The linear Fresnel lenses collect light into the stepped thickness waveguide. The stepped-thickness waveguide is an optical component which redirects focused sunlight from the vertical direction to the horizontal direction, and it guides light to the attached optical fiber. Simulation models were developed using commercial optical simulation tools (LightTools™). The optical efficiency and angular tolerance of the system are analyzed. The overall system cost is also estimated. Some considerations on the economic expansion of the system in terms of efficiency and estimated annual average energy saving are discussed. The results show that the presented optical fiber daylighting system is a strong candidate for low-price and highly efficient solution for solar energy application to building energy savings.

Suggested Citation

  • Ngoc Hai Vu & Seoyong Shin, 2016. "A Large Scale Daylighting System Based on a Stepped Thickness Waveguide," Energies, MDPI, vol. 9(2), pages 1-15, January.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:2:p:71-:d:62894
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    Citations

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    Cited by:

    1. Hoang Vu & Tran Quoc Tien & Jongbin Park & Meeryoung Cho & Ngoc Hai Vu & Seoyong Shin, 2022. "Waveguide Concentrator Photovoltaic with Spectral Splitting for Dual Land Use," Energies, MDPI, vol. 15(6), pages 1-14, March.
    2. Barbón, A. & Sánchez-Rodríguez, J.A. & Bayón, L. & Barbón, N., 2018. "Development of a fiber daylighting system based on a small scale linear Fresnel reflector: Theoretical elements," Applied Energy, Elsevier, vol. 212(C), pages 733-745.
    3. Ngoc Hai Vu & Thanh Tuan Pham & Seoyong Shin, 2020. "Large Scale Spectral Splitting Concentrator Photovoltaic System Based on Double Flat Waveguides," Energies, MDPI, vol. 13(9), pages 1-16, May.
    4. Ngoc Hai Vu & Seoyong Shin, 2017. "Flat Optical Fiber Daylighting System with Lateral Displacement Sun-Tracking Mechanism for Indoor Lighting," Energies, MDPI, vol. 10(10), pages 1-13, October.
    5. Ngoc Hai Vu & Seoyong Shin, 2018. "Flat Concentrator Photovoltaic System with Lateral Displacement Tracking for Residential Rooftops," Energies, MDPI, vol. 11(1), pages 1-12, January.
    6. Kumar, Krishana Ballabh & Gupta, Mayank & Mehta, Dalip Singh, 2023. "Efficient sunlight harvesting with combined system of large Fresnel lens segmented mirror reflectors and compound parabolic concentrator without tracking sun for indoor daylight illumination," Renewable Energy, Elsevier, vol. 202(C), pages 1198-1214.
    7. 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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