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Sustainability 2014, 6(12), 9231-9243; doi:10.3390/su6129231

Empirical Evaluation of the Effect of Heat Gain from Fiber Optic Daylighting System on Tropical Building Interiors

School of Housing, Building and Planning, Universiti Sains Malaysia, 11800 Penang, Malaysia
These authors contributed equally to this work.
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Received: 20 October 2014 / Revised: 28 November 2014 / Accepted: 5 December 2014 / Published: 12 December 2014
(This article belongs to the Section Energy Sustainability)
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Abstract

A fiber optic daylighting system is an evolving technology for transporting illumination from sunlight into building interiors. This system is a solution developed by daylighting designers to reduce operational costs and enhance comfort. As an innovative technology, fiber optic daylighting systems can illuminate building interiors efficiently compared with other daylighting strategies. However, as a transmission medium in daylighting systems, optical fibers require uniform light distribution in sunlight concentration, which could generate heat. Therefore, this study aims to investigate the effect of heat buildup produced by end-emitting fiber optic daylighting systems in tropical buildings. The applied method adopts a new fiber optic daylighting system technology from Sweden called Parans SP3, with a 10 m cable to be tested in an actual room size under the Malaysian climatic environment, particularly within the vicinity of the main campus of the Universiti Sains Malaysia. Results show that the system generated a temperature of 1.3 °C under average conditions through fiber optic diffusers and increases indoor temperature by 0.8 °C in a 60 m3 room. According to the results, applying fiber optic daylighting systems, as renewable energy sources, generates extra heat gain in building interiors in the tropics. View Full-Text
Keywords: heat gain; fiber optic system; daylighting; tropical indoor environment heat gain; fiber optic system; daylighting; tropical indoor environment
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Munaaim, M.A.C.; Al-Obaidi, K.M.; Ismail, M.R.; Rahman, A.M.A. Empirical Evaluation of the Effect of Heat Gain from Fiber Optic Daylighting System on Tropical Building Interiors. Sustainability 2014, 6, 9231-9243.

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