Outdoor thermal comfort index in Malaysian urban areas

Rapid urbanisation and industrialisation have adversely impacted the urban environmental heat stress due to urban heat island phenomenon. These thermal environmental problems can be even more challenging to people living in urban areas with tropical hot and humid climatic conditions throughout the y...

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Main Author:	Hanipah, Mohd Hafizal
Format:	Thesis
Language:	English English English
Published:	2019
Subjects:	TD Environmental technology Sanitary engineering
Online Access:	http://eprints.uthm.edu.my/81/1/24p%20MOHD%20HAFIZAL%20HANIPAH.pdf http://eprints.uthm.edu.my/81/2/MOHD%20HAFIZAL%20HANIPAH%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/81/3/MOHD%20HAFIZAL%20HANIPAH%20WATERMARK.pdf
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id	my-uthm-ep.81
record_format	uketd_dc
spelling	my-uthm-ep.812021-06-22T03:53:02Z Outdoor thermal comfort index in Malaysian urban areas 2019-09 Hanipah, Mohd Hafizal TD Environmental technology. Sanitary engineering Rapid urbanisation and industrialisation have adversely impacted the urban environmental heat stress due to urban heat island phenomenon. These thermal environmental problems can be even more challenging to people living in urban areas with tropical hot and humid climatic conditions throughout the year. Buildings in urban area is one of the major elements that contributes to the heat stress problem. The objectives of the study are threefolds. First, to evaluate outdoor thermal comfort by using Universal Thermal Climate Index (UTCI) associated with regression equation during the hottest daily temperature based on 3 years of hourly climatic data at principal meteorological stations of five selected cities in Malaysia. Second, to simulate the current urban layout of the five cities with different types of area (i.e., residential, commercial and industrial areas) based on the analysed climatic input data of the worst case scenario by using Computational Fluid Dynamic (CFD) modelling to investigate its impact on UTCI. Third, to establish the most influential building arrangement parameter towards the outdoor thermal comfort. It was revealed that the UTCI values at five principal meteorological stations for the worst case scenario of heat stress were in the range of 35 °C to 37 °C. Meanwhile, the predicted UTCI levels due to the impact of buildings within the current urban layouts of the five cities were generally higher in the range of 39 °C to 47 °C. Alor Setar’s residential area was found to have the lowest UTCI while Alor Setar’s industrial area demonstrated the highest UTCI value. The predicted results from the Pearson coefficient correlation analysis revealed that packing density and H/W ratio are the two parameters that show significant impact toward UTCI with the correlation coefficient (R2) of 0.746 and 0.689 respectively. However, the result from MLR analysis showed that packing density is the one and only BAP that has strong positive influence towards UTCI with the correlation coefficient (R2) of 0.557. 2019-09 Thesis http://eprints.uthm.edu.my/81/ http://eprints.uthm.edu.my/81/1/24p%20MOHD%20HAFIZAL%20HANIPAH.pdf text en public http://eprints.uthm.edu.my/81/2/MOHD%20HAFIZAL%20HANIPAH%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/81/3/MOHD%20HAFIZAL%20HANIPAH%20WATERMARK.pdf text en validuser phd doctoral Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Awam dan Alam Bina
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TD Environmental technology Sanitary engineering
spellingShingle	TD Environmental technology Sanitary engineering Hanipah, Mohd Hafizal Outdoor thermal comfort index in Malaysian urban areas
description	Rapid urbanisation and industrialisation have adversely impacted the urban environmental heat stress due to urban heat island phenomenon. These thermal environmental problems can be even more challenging to people living in urban areas with tropical hot and humid climatic conditions throughout the year. Buildings in urban area is one of the major elements that contributes to the heat stress problem. The objectives of the study are threefolds. First, to evaluate outdoor thermal comfort by using Universal Thermal Climate Index (UTCI) associated with regression equation during the hottest daily temperature based on 3 years of hourly climatic data at principal meteorological stations of five selected cities in Malaysia. Second, to simulate the current urban layout of the five cities with different types of area (i.e., residential, commercial and industrial areas) based on the analysed climatic input data of the worst case scenario by using Computational Fluid Dynamic (CFD) modelling to investigate its impact on UTCI. Third, to establish the most influential building arrangement parameter towards the outdoor thermal comfort. It was revealed that the UTCI values at five principal meteorological stations for the worst case scenario of heat stress were in the range of 35 °C to 37 °C. Meanwhile, the predicted UTCI levels due to the impact of buildings within the current urban layouts of the five cities were generally higher in the range of 39 °C to 47 °C. Alor Setar’s residential area was found to have the lowest UTCI while Alor Setar’s industrial area demonstrated the highest UTCI value. The predicted results from the Pearson coefficient correlation analysis revealed that packing density and H/W ratio are the two parameters that show significant impact toward UTCI with the correlation coefficient (R2) of 0.746 and 0.689 respectively. However, the result from MLR analysis showed that packing density is the one and only BAP that has strong positive influence towards UTCI with the correlation coefficient (R2) of 0.557.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Hanipah, Mohd Hafizal
author_facet	Hanipah, Mohd Hafizal
author_sort	Hanipah, Mohd Hafizal
title	Outdoor thermal comfort index in Malaysian urban areas
title_short	Outdoor thermal comfort index in Malaysian urban areas
title_full	Outdoor thermal comfort index in Malaysian urban areas
title_fullStr	Outdoor thermal comfort index in Malaysian urban areas
title_full_unstemmed	Outdoor thermal comfort index in Malaysian urban areas
title_sort	outdoor thermal comfort index in malaysian urban areas
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Awam dan Alam Bina
publishDate	2019
url	http://eprints.uthm.edu.my/81/1/24p%20MOHD%20HAFIZAL%20HANIPAH.pdf http://eprints.uthm.edu.my/81/2/MOHD%20HAFIZAL%20HANIPAH%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/81/3/MOHD%20HAFIZAL%20HANIPAH%20WATERMARK.pdf
_version_	1747830525059399680

Outdoor thermal comfort index in Malaysian urban areas

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