Passive design approach in enhancing natural ventilation performance of two storeys residential buildings in tropical climate

Air movement is one of the main factors contributing to thermal comfort. In achieving the comfort while maintaining low energy consumption, natural ventilation is the best source of air movement to relied on. However, inconsistency of surrounding air movement in urban areas may not provide sufficien...

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Main Author:	Abd Wahab, Izudinshah
Format:	Thesis
Language:	English English
Published:	2018
Subjects:	TH7005-7699 Heating and ventilation Air conditioning
Online Access:	http://eprints.uthm.edu.my/196/1/24p%20IZUDINSHAH%20ABD%20WAHAB.pdf http://eprints.uthm.edu.my/196/2/IZUDINSHAH%20ABD%20WAHAB%20WATERMARK.pdf
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id	my-uthm-ep.196
record_format	uketd_dc
spelling	my-uthm-ep.1962021-07-06T07:59:11Z Passive design approach in enhancing natural ventilation performance of two storeys residential buildings in tropical climate 2018-01 Abd Wahab, Izudinshah TH7005-7699 Heating and ventilation. Air conditioning Air movement is one of the main factors contributing to thermal comfort. In achieving the comfort while maintaining low energy consumption, natural ventilation is the best source of air movement to relied on. However, inconsistency of surrounding air movement in urban areas may not provide sufficient air flow for building in the area. Based on previous research, there are building design elements that show potential in contributing good indoor natural ventilation within the surrounding. Throughout case studies, this research identifies the elements which further specified as natural ventilation attributes. Result shows, wind catcher attribute turn to be the most significant followed by wide openings and indoor layout. Whereas louvered openings show possibilities in enhancing the incoming air velocity by-passing them. Using a full-scale single unit double storey house prototype, this research applies the potential attributes to the design before being analyzed on the building indoor air movement effect. The ratio of the overall indoor air movement upon outdoor air movement at particular hours was used to indicate the space indoor natural ventiation performance for the building. The result shows significant high incoming air velocity through the aerofoil louvered wind catcher applied as the high opening for the building atrium. The high air velocity was maintained at the upper area inside the atrium before rapidly reduced along its way down. The low positioning of the neutral pressure plane (NPP) level in the building kept the process flows. Wide openings provided at uper level, even are not directly attached to the atrium may cause air short cut flowing out along the way down. However, wide openings at lower level, significantly contribute good air flow despite slower crossing ventilation flowing at the level. In a situation when the surrounding air is almost stagnant, the design was found still capable to keep the air movement flow via stack effect ventilation. The research also found that while it is important for the building to to enhance the incoming air flow, it is also important to provide a properly planned layout design to manage the indoor air flow. 2018-01 Thesis http://eprints.uthm.edu.my/196/ http://eprints.uthm.edu.my/196/1/24p%20IZUDINSHAH%20ABD%20WAHAB.pdf text en public http://eprints.uthm.edu.my/196/2/IZUDINSHAH%20ABD%20WAHAB%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
topic	TH7005-7699 Heating and ventilation Air conditioning
spellingShingle	TH7005-7699 Heating and ventilation Air conditioning Abd Wahab, Izudinshah Passive design approach in enhancing natural ventilation performance of two storeys residential buildings in tropical climate
description	Air movement is one of the main factors contributing to thermal comfort. In achieving the comfort while maintaining low energy consumption, natural ventilation is the best source of air movement to relied on. However, inconsistency of surrounding air movement in urban areas may not provide sufficient air flow for building in the area. Based on previous research, there are building design elements that show potential in contributing good indoor natural ventilation within the surrounding. Throughout case studies, this research identifies the elements which further specified as natural ventilation attributes. Result shows, wind catcher attribute turn to be the most significant followed by wide openings and indoor layout. Whereas louvered openings show possibilities in enhancing the incoming air velocity by-passing them. Using a full-scale single unit double storey house prototype, this research applies the potential attributes to the design before being analyzed on the building indoor air movement effect. The ratio of the overall indoor air movement upon outdoor air movement at particular hours was used to indicate the space indoor natural ventiation performance for the building. The result shows significant high incoming air velocity through the aerofoil louvered wind catcher applied as the high opening for the building atrium. The high air velocity was maintained at the upper area inside the atrium before rapidly reduced along its way down. The low positioning of the neutral pressure plane (NPP) level in the building kept the process flows. Wide openings provided at uper level, even are not directly attached to the atrium may cause air short cut flowing out along the way down. However, wide openings at lower level, significantly contribute good air flow despite slower crossing ventilation flowing at the level. In a situation when the surrounding air is almost stagnant, the design was found still capable to keep the air movement flow via stack effect ventilation. The research also found that while it is important for the building to to enhance the incoming air flow, it is also important to provide a properly planned layout design to manage the indoor air flow.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Abd Wahab, Izudinshah
author_facet	Abd Wahab, Izudinshah
author_sort	Abd Wahab, Izudinshah
title	Passive design approach in enhancing natural ventilation performance of two storeys residential buildings in tropical climate
title_short	Passive design approach in enhancing natural ventilation performance of two storeys residential buildings in tropical climate
title_full	Passive design approach in enhancing natural ventilation performance of two storeys residential buildings in tropical climate
title_fullStr	Passive design approach in enhancing natural ventilation performance of two storeys residential buildings in tropical climate
title_full_unstemmed	Passive design approach in enhancing natural ventilation performance of two storeys residential buildings in tropical climate
title_sort	passive design approach in enhancing natural ventilation performance of two storeys residential buildings in tropical climate
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Awam dan Alam Bina
publishDate	2018
url	http://eprints.uthm.edu.my/196/1/24p%20IZUDINSHAH%20ABD%20WAHAB.pdf http://eprints.uthm.edu.my/196/2/IZUDINSHAH%20ABD%20WAHAB%20WATERMARK.pdf
_version_	1747830551323082752

Passive design approach in enhancing natural ventilation performance of two storeys residential buildings in tropical climate

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