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On-Demand Tunnel Lighting System Utilizing Daylight: A Case Study

Author

Listed:
  • Lingna Shi

    (Traffic Engineering and Energy-Saving Department, China Merchants Chongqing Communications Research & Design Institute Co., Ltd., Chongqing 400067, China)

  • Yun Tu

    (Traffic Engineering and Energy-Saving Department, China Merchants Chongqing Communications Research & Design Institute Co., Ltd., Chongqing 400067, China)

  • Xiaoyu Wang

    (State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, China)

  • Shiyong He

    (State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, China
    Chongqing Expressway Group Co., Ltd., Chongqing 401316, China)

  • Pramod Bhusal

    (Department of Electrical Engineering and Automation, Lighting Unit, School of Electrical Engineering, Aalto University, 02360 Espoo, Finland)

  • Zeyu Hou

    (State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, China)

  • Chaoyu Zhang

    (State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, China)

Abstract

Owing to the special tubular structural characteristics of highway tunnels, drivers typically experience a significant change in visual luminance when entering tunnels, which seriously impacts driving safety. This paper proposes a lighting scheme based on optical fiber technology to introduce natural light into the tunnel portal section. First, an on-demand lighting scheme based on the use of daylight is designed by developing an optical fiber lighting system, lighting demand algorithm, and an on-demand lighting control scheme. Furthermore, the scheme is applied to a physical tunnel, and the safety and energy-saving potential of the scheme are analyzed based on the obtained data. The results indicate that the average luminance and luminance uniformity in the tunnel portal section appear to improve with the application of the proposed scheme; the luminance uniformity is particularly increased by 0.18. The correlative color temperature (CCT) of the environment inside the cave changes in real time with the CCT value of the phase pair outside the cave. Compared with the explicit use of electrical lighting, the lighting energy consumption during daytime can be reduced by 34.7% with the application of the proposed scheme, and the highest reduction of 79.8% can be achieved at 13:00.

Suggested Citation

  • Lingna Shi & Yun Tu & Xiaoyu Wang & Shiyong He & Pramod Bhusal & Zeyu Hou & Chaoyu Zhang, 2023. "On-Demand Tunnel Lighting System Utilizing Daylight: A Case Study," Sustainability, MDPI, vol. 15(3), pages 1-14, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:3:p:2013-:d:1042777
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    References listed on IDEAS

    as
    1. Li Qin & Li-Li Dong & Wen-Hai Xu & Li-Dong Zhang & Arturo S. Leon, 2017. "An Intelligent Luminance Control Method for Tunnel Lighting Based on Traffic Volume," Sustainability, MDPI, vol. 9(12), pages 1-12, November.
    2. Giuseppe Cantisani & Paola Di Mascio & Laura Moretti, 2018. "Comparative Life Cycle Assessment of Lighting Systems and Road Pavements in an Italian Twin-Tube Road Tunnel," Sustainability, MDPI, vol. 10(11), pages 1-18, November.
    Full references (including those not matched with items on IDEAS)

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