C. Munaaim, Muhammad Arkam and Al-Obaidi, Karam M. and Ismail, Mohd Rodzi and Abdul Rahman, Abdul Malek
(2014)
Empirical Evaluation of the Effect of Heat Gain from Fiber
Optic Daylighting System on Tropical Building Interiors.
Sustainability, 6 (12).
pp. 9231-9243.
ISSN 2071-1050
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.
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