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Daylighting and lighting energy saving in south-oriented open-plan office with light shelf in the tropics

This paper examined the performance of a light shelf (LS) as a delighting device for reducing electric light usage in a south-oriented open-plan office (OPO) under the sky in the tropic using Integrated Environmental Solution Virtual Environment (IES VE). Results showed that the LS improved daylight...

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Main Authors: Abimaje, Joshua, Lim, Yaik Wah
Format: Article
Published: Ubiquity Press 2020
Subjects:
TX955-985 Building management
Online Access:http://eprints.utm.my/id/eprint/91903/
https://ejmcm.com/article_1554.html
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spelling my.utm.919032021-08-09T08:45:52Z http://eprints.utm.my/id/eprint/91903/ Daylighting and lighting energy saving in south-oriented open-plan office with light shelf in the tropics Abimaje, Joshua Lim, Yaik Wah TX955-985 Building management This paper examined the performance of a light shelf (LS) as a delighting device for reducing electric light usage in a south-oriented open-plan office (OPO) under the sky in the tropic using Integrated Environmental Solution Virtual Environment (IES VE). Results showed that the LS improved daylight quantity of the one-sided light office by reducing the excessive illumination at the area close to the window opening but increased it at the back where the illuminance is low. The improvement at the rear was from 1.55 % (LS 3 at noon on 21st March) to 2.99 % (LS 2 on 22nd June at noon). The LS also improved illuminance uniformity for visual comfort in the room with the best three test cases ranging from 74.07 % (LS 2 and 7) to 76.67 % (L3) compared to the case without LS. The selected test cases showed higher illuminance distribution between adjacent points or possible sitting position in the room than the base case (BC). The reduction in electric light usage ranged from 11.78 % (LS 3) to 15.97 % (LS 2). Hence, the paper concludes that LS improved daylight and electric energy efficiency. Therefore, the LS 2 is recommended for the south-oriented OPO with one-sided lighting in the tropical climate. Ubiquity Press 2020 Article PeerReviewed Abimaje, Joshua and Lim, Yaik Wah (2020) Daylighting and lighting energy saving in south-oriented open-plan office with light shelf in the tropics. European Journal of Molecular & Clinical Medicine, 7 (3). pp. 723-744. ISSN 2515-8260 https://ejmcm.com/article_1554.html
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TX955-985 Building management
spellingShingle TX955-985 Building management
Abimaje, Joshua
Lim, Yaik Wah
Daylighting and lighting energy saving in south-oriented open-plan office with light shelf in the tropics
description This paper examined the performance of a light shelf (LS) as a delighting device for reducing electric light usage in a south-oriented open-plan office (OPO) under the sky in the tropic using Integrated Environmental Solution Virtual Environment (IES VE). Results showed that the LS improved daylight quantity of the one-sided light office by reducing the excessive illumination at the area close to the window opening but increased it at the back where the illuminance is low. The improvement at the rear was from 1.55 % (LS 3 at noon on 21st March) to 2.99 % (LS 2 on 22nd June at noon). The LS also improved illuminance uniformity for visual comfort in the room with the best three test cases ranging from 74.07 % (LS 2 and 7) to 76.67 % (L3) compared to the case without LS. The selected test cases showed higher illuminance distribution between adjacent points or possible sitting position in the room than the base case (BC). The reduction in electric light usage ranged from 11.78 % (LS 3) to 15.97 % (LS 2). Hence, the paper concludes that LS improved daylight and electric energy efficiency. Therefore, the LS 2 is recommended for the south-oriented OPO with one-sided lighting in the tropical climate.
format Article
author Abimaje, Joshua
Lim, Yaik Wah
author_facet Abimaje, Joshua
Lim, Yaik Wah
author_sort Abimaje, Joshua
title Daylighting and lighting energy saving in south-oriented open-plan office with light shelf in the tropics
title_short Daylighting and lighting energy saving in south-oriented open-plan office with light shelf in the tropics
title_full Daylighting and lighting energy saving in south-oriented open-plan office with light shelf in the tropics
title_fullStr Daylighting and lighting energy saving in south-oriented open-plan office with light shelf in the tropics
title_full_unstemmed Daylighting and lighting energy saving in south-oriented open-plan office with light shelf in the tropics
title_sort daylighting and lighting energy saving in south-oriented open-plan office with light shelf in the tropics
publisher Ubiquity Press
publishDate 2020
url http://eprints.utm.my/id/eprint/91903/
https://ejmcm.com/article_1554.html
_version_ 1707765872931635200
score 13.211869

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