A prismatic daylight redirecting fenestration system for southern skies
Funding Number
2799
Funding Sponsor
Science and Technology Development Fund
Author's Department
Electronics & Communications Engineering Department
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https://doi.org/10.1016/j.renene.2017.02.048
Document Type
Research Article
Publication Title
Renewable Energy
Publication Date
1-1-2017
doi
10.1016/j.renene.2017.02.048
Abstract
© 2017 Daylighting had always played a crucial role in reducing the electric energy consumption in balance with preserving a high quality of illumination. Modern architectural design in densely populated areas would result in inadequate illumination. Such conditions raised the urge of using non-traditional solutions to assist light in penetrating deep dark spaces. Many systems have been designed to serve northern skies with low solar altitudes. This paper clarifies the design process of a light harvesting system for southern skies; however, for higher solar altitudes. The system has been developed using optical analytical equations and the bidirectional scattering distribution function (BSDF) for the system was derived, and simulations were carried out using RADIANCE. A small-scale prototype was manufactured to validate the simulation results and prove the concept of prismatic light redirection. The design turned out to improve the daylighting performance in deep dark spaces. Dynamic daylighting measures such as daylight autonomy and continuous daylight autonomy were used in rating and improvements ranging from 25% to 34% were achieved using the system as compared to traditional glazing.
First Page
202
Last Page
212
Recommended Citation
APA Citation
Mashaly, I.
Nassar, K.
El-Henawy, S.
Mohamed, M.
...
(2017). A prismatic daylight redirecting fenestration system for southern skies. Renewable Energy, 109, 202–212.
10.1016/j.renene.2017.02.048
https://fount.aucegypt.edu/faculty_journal_articles/1251
MLA Citation
Mashaly, Islam A., et al.
"A prismatic daylight redirecting fenestration system for southern skies." Renewable Energy, vol. 109, 2017, pp. 202–212.
https://fount.aucegypt.edu/faculty_journal_articles/1251