General Information
    • ISSN: 1793-821X (Print)
    • Frequency: Quarterly (2013-2014); Bimonthly (Since 2015)
    • DOI: 10.18178/JOCET
    • Editor-in-Chief: Prof. Haider F. Abdul Amir
    • Executive Editor: Ms. Jennifer Zeng
    • Abstracting/ Indexing: EI (INSPEC, IET), Electronic Journals Library, Chemical Abstracts Services (CAS), Ulrich's Periodicals Directory, Google Scholar, ProQuest.
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School of Science and Technology Universiti Malaysia Sabah, Malaysia.
I would like to express my appreciation to all authors, reviewers and editors.

JOCET 2017 Vol.5(1): 73-76 ISSN: 1793-821X
DOI: 10.18178/JOCET.2017.5.1.347

Performance Testing of Light Pipes in Real Weather Conditions for a Confrontation with Hemera

B. Malet-Damour, H. Boyer, S. Guichard, and F. Miranville
Abstract—Daylight offers many possibilities. Its proper use is a major asset to develop the design, energy and environmental quality of a building but also improve the physiological and psychological conditions of the user. New emerging devices, offer the opportunity to improve visual comfort while, providing energy savings. The light pipes are considered as a part of these innovative devices. Existing semi-empirical models do not adequately transcribe the behavior of light pipes. The scientific objective of this study is to investigate the propagation of light within a real test-cell equipped with this device in real weather conditions. The aim is to better understand the role of each parameter (solar geometry, diffuse illumination, direct illumination, etc.). The results indicated a difference in light distribution within the test cell between the clear and overcast sky. We target new parameters to take into account in modeling the phenomenon.

Index Terms—Light pipe MLP, Hemera, daylighting analysis, experimental measurement.

B. Malet-Damour, H. Boyer, and F. Miranville are with the Physics and Mathematical Engineering Laboratory for Energy and Environment (PIMENT), University of La Reunion, France (e-mail:,,
S. Guichard is with the Research Institute of Science and Innovation Now (IRISE), CESI of La Reunion, France (e-mail:


Cite:B. Malet-Damour, H. Boyer, S. Guichard, and F. Miranville, "Performance Testing of Light Pipes in Real Weather Conditions for a Confrontation with Hemera," Journal of Clean Energy Technologies vol. 5, no. 1, pp. 73-76, 2017.

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