Natural lighting for enclosed corridor by optical fibers

Pao Yue-kong Library Electronic Theses Database

Natural lighting for enclosed corridor by optical fibers

 

Author: Zhao, Peiwen
Title: Natural lighting for enclosed corridor by optical fibers
Degree: M.Eng.
Year: 2012
Subject: Daylighting.
Optical fibers.
Interior lighting.
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Building Services Engineering
Pages: 84 leaves : ill. (some col.) ; 30 cm.
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2525572
URI: http://theses.lib.polyu.edu.hk/handle/200/6651
Abstract: In order to save energy and create a friendly environment in enclosed areas, some remote solar source lighting systems are developed in recent years. This dissertation presents an optical fiber lighting system which transfers beam sunlight for interior lighting. A corridor of a newly built dormitory is chosen as a lighting target for case study. The efficiency and performance of each part of the system is tested by experiment and software simulation. Some factors affecting the efficiency such as light focusing rate, transmission rate, bent radius, fiber length and incidence angle are taken into consideration. According to the test result, the light model of the fiber lighting system is built in IES format and loaded into the corridor model by DIALUX to evaluate the lighting performance. Therefore, the detailed information such as required number of luminaries, illumination on the floor, light uniformity, color rendering index and glare rating are obtained. The result shows that this newly developed system is suitable for the corridor lighting with its natural light output and has a large potential for energy saving in the sunny day. But the long payback period makes it hard to be widely used at present.

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