The Effect Of Window Design On Daylighting And Thermal Performance Of Classrooms In Penang, Malaysia

The quality of the indoor environment including the lighting conditions is crucial in classrooms as it directly affects students’ performance and productivity. Natural light is the best source of light from visual and aesthetic perspectives and energy efficiency views. The luminous efficacy of dayli...

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Main Author:	Al-Ashwal, Najib Taher Ahmed
Format:	Thesis
Language:	English
Published:	2020
Subjects:	TH2025-3000 Details in building design and construction
Online Access:	http://eprints.usm.my/53446/1/NAJIB%20ALASHWAL.pdf
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id	my-usm-ep.53446
record_format	uketd_dc
spelling	my-usm-ep.534462022-07-19T01:05:41Z The Effect Of Window Design On Daylighting And Thermal Performance Of Classrooms In Penang, Malaysia 2020-04 Al-Ashwal, Najib Taher Ahmed TH2025-3000 Details in building design and construction The quality of the indoor environment including the lighting conditions is crucial in classrooms as it directly affects students’ performance and productivity. Natural light is the best source of light from visual and aesthetic perspectives and energy efficiency views. The luminous efficacy of daylight in Malaysia is excellent and could meet most of the required luminance during the day. However, in Malaysian schools, it was found that all the lights are switched on throughout the day and only be off during break time and at the end of the day. Besides, most of the classrooms in Malaysia, in schools or higher institutions, daylighting is not efficiently utilised. This study investigates the impact of window design elements on the daylighting performance and thermal load in classrooms in national high schools in Penang, Malaysia. The study is divided into two phases. First, the fieldwork phase, which aims at evaluating daylighting performance in high schools’ classrooms in Penang through measuring incident illumination levels inside the examined classrooms. The results revealed that more than enough daylight is provided in most classrooms because of the relatively large classrooms’ windows with clear glass. The average illuminance found from these measurements is between 400 lux more than 1000 lux which is higher than by the standards recommended value. The average daylight factor recorded in the classrooms is between 6.4 and 9.2% in most of the times. These values are relatively high and may result in glare problems. The second phase includes the modelling and simulation using Design-Builder for a typical classroom in the high schools in Penang. 2020-04 Thesis http://eprints.usm.my/53446/ http://eprints.usm.my/53446/1/NAJIB%20ALASHWAL.pdf application/pdf en public phd doctoral Perpustakaan Hamzah Sendut Pusat Pengajian Perumahan, Bangunan & Perancangan
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TH2025-3000 Details in building design and construction
spellingShingle	TH2025-3000 Details in building design and construction Al-Ashwal, Najib Taher Ahmed The Effect Of Window Design On Daylighting And Thermal Performance Of Classrooms In Penang, Malaysia
description	The quality of the indoor environment including the lighting conditions is crucial in classrooms as it directly affects students’ performance and productivity. Natural light is the best source of light from visual and aesthetic perspectives and energy efficiency views. The luminous efficacy of daylight in Malaysia is excellent and could meet most of the required luminance during the day. However, in Malaysian schools, it was found that all the lights are switched on throughout the day and only be off during break time and at the end of the day. Besides, most of the classrooms in Malaysia, in schools or higher institutions, daylighting is not efficiently utilised. This study investigates the impact of window design elements on the daylighting performance and thermal load in classrooms in national high schools in Penang, Malaysia. The study is divided into two phases. First, the fieldwork phase, which aims at evaluating daylighting performance in high schools’ classrooms in Penang through measuring incident illumination levels inside the examined classrooms. The results revealed that more than enough daylight is provided in most classrooms because of the relatively large classrooms’ windows with clear glass. The average illuminance found from these measurements is between 400 lux more than 1000 lux which is higher than by the standards recommended value. The average daylight factor recorded in the classrooms is between 6.4 and 9.2% in most of the times. These values are relatively high and may result in glare problems. The second phase includes the modelling and simulation using Design-Builder for a typical classroom in the high schools in Penang.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Al-Ashwal, Najib Taher Ahmed
author_facet	Al-Ashwal, Najib Taher Ahmed
author_sort	Al-Ashwal, Najib Taher Ahmed
title	The Effect Of Window Design On Daylighting And Thermal Performance Of Classrooms In Penang, Malaysia
title_short	The Effect Of Window Design On Daylighting And Thermal Performance Of Classrooms In Penang, Malaysia
title_full	The Effect Of Window Design On Daylighting And Thermal Performance Of Classrooms In Penang, Malaysia
title_fullStr	The Effect Of Window Design On Daylighting And Thermal Performance Of Classrooms In Penang, Malaysia
title_full_unstemmed	The Effect Of Window Design On Daylighting And Thermal Performance Of Classrooms In Penang, Malaysia
title_sort	effect of window design on daylighting and thermal performance of classrooms in penang, malaysia
granting_institution	Perpustakaan Hamzah Sendut
granting_department	Pusat Pengajian Perumahan, Bangunan & Perancangan
publishDate	2020
url	http://eprints.usm.my/53446/1/NAJIB%20ALASHWAL.pdf
_version_	1747822244204118016

The Effect Of Window Design On Daylighting And Thermal Performance Of Classrooms In Penang, Malaysia

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