Building surfaces and their effect on the urban thermal environment

Priyadarsini, R. and Wong, N.H. 2005, Building surfaces and their effect on the urban thermal environment, Architectural science review, vol. 48, no. 4, pp. 345-356.

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Title Building surfaces and their effect on the urban thermal environment
Author(s) Priyadarsini, R.
Wong, N.H.
Journal name Architectural science review
Volume number 48
Issue number 4
Start page 345
End page 356
Publisher Earthscan Ltd.
Place of publication London, England
Publication date 2005-12
ISSN 0003-8628
Keyword(s) building materials
CBD area
CFD sumulations
surface temperature
urban heat island
Summary Use of high reflectance surfaces reduces the amount of solar radiation absorbed through building envelopes and urban structures and thus keeping their surfaces cooler. The cooling energy savings by using high reflectance surfaces have been well documented. Higher surface temperatures add to increasing the ambient temperature as convection intensity is higher. Such temperature increase has significant impacts on the air conditioning energy utilization in hot climates. This study makes use of numerical simulations to analyze the effect of commonly used building materials on the air temperature. A part of the existing CBD (Central Business District) area of Singapore was selected for the study. A series of Computational Fluid Dynamics (CFD) simulations have been carried out using the software CFX-5.6. It was found that at low wind speeds, the effect of materials on the air temperature was significant and the temperature at the middle of a narrow canyon increased up to 2.5[degrees]C with the facade material having lower reflectance.
Language eng
Field of Research 120202 Building Science and Techniques
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2005, Taylor & Francis
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