Proceedings of the 2025 7th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2025)

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Relationship Between Light Pipes Efficiency and Length-to-diameter Ratio

Authors
Zihan Xie1, Jingyi Li1, Shihua He1, Jianxiang Xie1, Weihao Chen2, 3, *
1Guangzhou Power Supply Bureau of Guangdong Grid Co., Ltd, Guangzhou, 510062, China
2Guangdong Provincial Academy of Building Research Group Co., Ltd, Guangzhou, 510500, China
3Guangdong Jianke Innovation Technology Research Institute Co., Ltd, Zhongshan, 528403, China
*Corresponding author. Email: wei-hao-chen@foxmail.com
Corresponding Author
Weihao Chen
Available Online 16 December 2025.
DOI
10.2991/978-94-6463-902-5_21How to use a DOI?
Keywords
light pipe; light pipe efficiency; HOLIGILM; CIE standard overcast sky
Abstract

To investigate the functional relationship between the efficiency of light pipes and the length-to-diameter ratio, this study simulated and analyzed the relationship using HOLIGILM software under standard overcast sky conditions, based on the latitude characteristics and light climate conditions of Guangzhou. The simulation results are fitted with an exponential function, and the findings show that the efficiency of light pipes has an exponentially negative correlation with the length-to-diameter ratio. Moreover, their performance depends solely on the material and size of the light pipes themselves, being independent of the outdoor light environment. This research provides a theoretical basis for optimizing parameter selection during the design phase of light pipes and enhancing their application effectiveness in building lighting.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2025 7th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2025)
Series
Advances in Engineering Research
Publication Date
16 December 2025
ISBN
978-94-6463-902-5
ISSN
2352-5401
DOI
10.2991/978-94-6463-902-5_21How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Zihan Xie
AU  - Jingyi Li
AU  - Shihua He
AU  - Jianxiang Xie
AU  - Weihao Chen
PY  - 2025
DA  - 2025/12/16
TI  - Relationship Between Light Pipes Efficiency and Length-to-diameter Ratio
BT  - Proceedings of the 2025 7th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2025)
PB  - Atlantis Press
SP  - 224
EP  - 235
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-902-5_21
DO  - 10.2991/978-94-6463-902-5_21
ID  - Xie2025
ER  -