Affordable retrofitting methods to achieve thermal comfort for a terrace house in Malaysia with a hot–humid climate

Although various cooling approaches have been proposed to overcome the thermal discomfort in residential buildings, tropical developing countries still lack affordable and effective retrofitting methods. The objective of this study was to evaluate the effectiveness of an affordable retrofitting meth...

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Main Authors: Ng, Wai Tuck, Sheikh Ahmad Zaki, Sheikh Ahmad Zaki, Hagishima, Aya, Rijal, Hom Bahadur, Yakub, Fitri
Format: Article
Published: Elsevier Ltd 2020
Subjects:
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author Ng, Wai Tuck
Sheikh Ahmad Zaki, Sheikh Ahmad Zaki
Hagishima, Aya
Rijal, Hom Bahadur
Yakub, Fitri
author_facet Ng, Wai Tuck
Sheikh Ahmad Zaki, Sheikh Ahmad Zaki
Hagishima, Aya
Rijal, Hom Bahadur
Yakub, Fitri
author_sort Ng, Wai Tuck
collection ePrints
description Although various cooling approaches have been proposed to overcome the thermal discomfort in residential buildings, tropical developing countries still lack affordable and effective retrofitting methods. The objective of this study was to evaluate the effectiveness of an affordable retrofitting method with high-density polyethylene (HDPE) nets as roof covers for shading over the roof, supported by full day free-running ventilation, and heat insulation above the ceiling of residential buildings in hot–humid climate regions to overcome the thermal discomfort. Field measurements were carried out in a corner terrace house in Malaysia, from September to December 2018. The roof cover with HDPE nets maintained a consistent surface temperature at the roof tiles and reduced the convective heat flux by approximately 70–80% in the attic and 88% in the room. Further, it improved the compliance (acceptability: 80%) of the whole-day mean operative temperature in the room (hot–humid climate) by 10%. The roof cover can effectively provide thermal comfort in residential buildings in Malaysia, which has a hot–humid climate. Alongside active cooling with the ceiling fan, required comfortable indoor temperature can be reached under the hot–humid climate, particularly during the night-time. Furthermore, the zero-energy-consuming, low-cost low-technology roof cover method is very suitable for low-cost houses with roof tile in hot–humid climate regions.
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spelling utm.eprints-900282021-03-31T05:04:03Z http://eprints.utm.my/90028/ Affordable retrofitting methods to achieve thermal comfort for a terrace house in Malaysia with a hot–humid climate Ng, Wai Tuck Sheikh Ahmad Zaki, Sheikh Ahmad Zaki Hagishima, Aya Rijal, Hom Bahadur Yakub, Fitri T Technology (General) Although various cooling approaches have been proposed to overcome the thermal discomfort in residential buildings, tropical developing countries still lack affordable and effective retrofitting methods. The objective of this study was to evaluate the effectiveness of an affordable retrofitting method with high-density polyethylene (HDPE) nets as roof covers for shading over the roof, supported by full day free-running ventilation, and heat insulation above the ceiling of residential buildings in hot–humid climate regions to overcome the thermal discomfort. Field measurements were carried out in a corner terrace house in Malaysia, from September to December 2018. The roof cover with HDPE nets maintained a consistent surface temperature at the roof tiles and reduced the convective heat flux by approximately 70–80% in the attic and 88% in the room. Further, it improved the compliance (acceptability: 80%) of the whole-day mean operative temperature in the room (hot–humid climate) by 10%. The roof cover can effectively provide thermal comfort in residential buildings in Malaysia, which has a hot–humid climate. Alongside active cooling with the ceiling fan, required comfortable indoor temperature can be reached under the hot–humid climate, particularly during the night-time. Furthermore, the zero-energy-consuming, low-cost low-technology roof cover method is very suitable for low-cost houses with roof tile in hot–humid climate regions. Elsevier Ltd 2020-04 Article PeerReviewed Ng, Wai Tuck and Sheikh Ahmad Zaki, Sheikh Ahmad Zaki and Hagishima, Aya and Rijal, Hom Bahadur and Yakub, Fitri (2020) Affordable retrofitting methods to achieve thermal comfort for a terrace house in Malaysia with a hot–humid climate. Energy and Buildings, 223 . p. 110072. ISSN 0378-7788 http://dx.doi.org/10.1016/j.enbuild.2020.110072
spellingShingle T Technology (General)
Ng, Wai Tuck
Sheikh Ahmad Zaki, Sheikh Ahmad Zaki
Hagishima, Aya
Rijal, Hom Bahadur
Yakub, Fitri
Affordable retrofitting methods to achieve thermal comfort for a terrace house in Malaysia with a hot–humid climate
title Affordable retrofitting methods to achieve thermal comfort for a terrace house in Malaysia with a hot–humid climate
title_full Affordable retrofitting methods to achieve thermal comfort for a terrace house in Malaysia with a hot–humid climate
title_fullStr Affordable retrofitting methods to achieve thermal comfort for a terrace house in Malaysia with a hot–humid climate
title_full_unstemmed Affordable retrofitting methods to achieve thermal comfort for a terrace house in Malaysia with a hot–humid climate
title_short Affordable retrofitting methods to achieve thermal comfort for a terrace house in Malaysia with a hot–humid climate
title_sort affordable retrofitting methods to achieve thermal comfort for a terrace house in malaysia with a hot humid climate
topic T Technology (General)
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