Optical fiber light scattering outdoor tests for interior daylighting

In building construction, most traditional building materials block the passage of natural light through the building envelope into its interior space. Therefore, there is an energy demand for artificial lighting of interior spaces during daytime hours in almost all building types. Currently, some i...

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Bibliographic Details
Published in:Energy and buildings 2019-09, Vol.198, p.138-148
Main Author: Casquero-Modrego, N.
Format: Article
Language:English
Subjects:
Anidolic light
Building design
Building envelopes
Building materials
Buildings
Channeling
Concentrators
Construction
Construction materials
Data transmission
Daylight
Daylighting
Energy demand
Energy efficiency
Energy savings
Light scattering
Natural lighting
Optical fibers
Shading
Solar concentrators
Sunlight
Viability
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Summary:In building construction, most traditional building materials block the passage of natural light through the building envelope into its interior space. Therefore, there is an energy demand for artificial lighting of interior spaces during daytime hours in almost all building types. Currently, some interior spaces in a building may have excessive sunlight exposure and as a result, external shading elements for daylight control are required. Optical fibers (OFs) are mainly used for data transmission, but previous studies have demonstrated their capability for capturing and channeling sunlight into interior spaces in an anidolic manner. The present research introduces different OF tip shapes aligned together with solar concentrators of different geometries. The objective of the study is to assess and improve the basic properties of sunlight capturing, channeling and scattering using OFs. The results demonstrate the viability of using OFs as a passive daylight system and as an advancement in the energy efficient building envelopes design.
ISSN:0378-7788
1872-6178
DOI:10.1016/j.enbuild.2019.06.009