Thermal-Energy Performance of High-Albedo Roof Tiles and Bulk Rafter Insulation in Residential Roof in the Tropical Climate

Residential roof assemblies in tropical countries, such as Malaysia, are exposed to intense solar radiation throughout the day all-year round due to the high altitude of the sun path as well as the horizontal orientation and high position of the roof in relation to other components of the building e...

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Main Authors: Farhan, S.A., Shafiq, N., Husna, N., Zain-Ahmed, A., Wahab, M.M.A., Razak, S.N.A., Ismail, F.I.
Format: Conference or Workshop Item
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.29570 /
Published: IOP Publishing Ltd 2021
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122427402&doi=10.1088%2f1755-1315%2f945%2f1%2f012067&partnerID=40&md5=0cdd3857226137d4dad4f218cca6af10
http://eprints.utp.edu.my/29570/
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spelling utp-eprints.295702022-03-29T05:10:00Z Thermal-Energy Performance of High-Albedo Roof Tiles and Bulk Rafter Insulation in Residential Roof in the Tropical Climate Farhan, S.A. Shafiq, N. Husna, N. Zain-Ahmed, A. Wahab, M.M.A. Razak, S.N.A. Ismail, F.I. Residential roof assemblies in tropical countries, such as Malaysia, are exposed to intense solar radiation throughout the day all-year round due to the high altitude of the sun path as well as the horizontal orientation and high position of the roof in relation to other components of the building envelope. Residential buildings typically employ a lightweight pitched roof with roof tiles and an attic space above a ceiling board. Diurnal heat transfer into the building through the roof assembly can be minimized by reflecting heat at the roof surface via the application of white paint on high-albedo roof tiles as well as resisting heat via installation of bulk rafter insulation within the roof assembly. However, their adoption will have an influence on the nocturnal heat transfer and, accordingly, the resultant thermal-energy performance. Hence, thermal-energy performances of high-albedo roof tiles and bulk rafter insulation were compared to develop an energy-efficient pitched residential roof assembly that is capable of minimizing diurnal heat transfer into the building with less obstruction of the nocturnal heat transfer in the opposite direction. Evaluation of thermal-energy performance was performed on a Building Information Model, which either adopts, solely, the application of white paint on high-albedo roof tiles, or, in amalgamation with, the installation of bulk rafter insulation within the roof assembly. The simulation projected that the application of white paint on high-albedo roof tiles can generate annual energy savings of 13.14 and, when adopted in amalgamation with the installation of bulk rafter insulation within the roof assembly, 13.91 . © Published under licence by IOP Publishing Ltd. IOP Publishing Ltd 2021 Conference or Workshop Item NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122427402&doi=10.1088%2f1755-1315%2f945%2f1%2f012067&partnerID=40&md5=0cdd3857226137d4dad4f218cca6af10 Farhan, S.A. and Shafiq, N. and Husna, N. and Zain-Ahmed, A. and Wahab, M.M.A. and Razak, S.N.A. and Ismail, F.I. (2021) Thermal-Energy Performance of High-Albedo Roof Tiles and Bulk Rafter Insulation in Residential Roof in the Tropical Climate. In: UNSPECIFIED. http://eprints.utp.edu.my/29570/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Residential roof assemblies in tropical countries, such as Malaysia, are exposed to intense solar radiation throughout the day all-year round due to the high altitude of the sun path as well as the horizontal orientation and high position of the roof in relation to other components of the building envelope. Residential buildings typically employ a lightweight pitched roof with roof tiles and an attic space above a ceiling board. Diurnal heat transfer into the building through the roof assembly can be minimized by reflecting heat at the roof surface via the application of white paint on high-albedo roof tiles as well as resisting heat via installation of bulk rafter insulation within the roof assembly. However, their adoption will have an influence on the nocturnal heat transfer and, accordingly, the resultant thermal-energy performance. Hence, thermal-energy performances of high-albedo roof tiles and bulk rafter insulation were compared to develop an energy-efficient pitched residential roof assembly that is capable of minimizing diurnal heat transfer into the building with less obstruction of the nocturnal heat transfer in the opposite direction. Evaluation of thermal-energy performance was performed on a Building Information Model, which either adopts, solely, the application of white paint on high-albedo roof tiles, or, in amalgamation with, the installation of bulk rafter insulation within the roof assembly. The simulation projected that the application of white paint on high-albedo roof tiles can generate annual energy savings of 13.14 and, when adopted in amalgamation with the installation of bulk rafter insulation within the roof assembly, 13.91 . © Published under licence by IOP Publishing Ltd.
format Conference or Workshop Item
author Farhan, S.A.
Shafiq, N.
Husna, N.
Zain-Ahmed, A.
Wahab, M.M.A.
Razak, S.N.A.
Ismail, F.I.
spellingShingle Farhan, S.A.
Shafiq, N.
Husna, N.
Zain-Ahmed, A.
Wahab, M.M.A.
Razak, S.N.A.
Ismail, F.I.
Thermal-Energy Performance of High-Albedo Roof Tiles and Bulk Rafter Insulation in Residential Roof in the Tropical Climate
author_sort Farhan, S.A.
title Thermal-Energy Performance of High-Albedo Roof Tiles and Bulk Rafter Insulation in Residential Roof in the Tropical Climate
title_short Thermal-Energy Performance of High-Albedo Roof Tiles and Bulk Rafter Insulation in Residential Roof in the Tropical Climate
title_full Thermal-Energy Performance of High-Albedo Roof Tiles and Bulk Rafter Insulation in Residential Roof in the Tropical Climate
title_fullStr Thermal-Energy Performance of High-Albedo Roof Tiles and Bulk Rafter Insulation in Residential Roof in the Tropical Climate
title_full_unstemmed Thermal-Energy Performance of High-Albedo Roof Tiles and Bulk Rafter Insulation in Residential Roof in the Tropical Climate
title_sort thermal-energy performance of high-albedo roof tiles and bulk rafter insulation in residential roof in the tropical climate
publisher IOP Publishing Ltd
publishDate 2021
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122427402&doi=10.1088%2f1755-1315%2f945%2f1%2f012067&partnerID=40&md5=0cdd3857226137d4dad4f218cca6af10
http://eprints.utp.edu.my/29570/
_version_ 1741197263975219200
score 11.62408

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