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Title: Building surfaces and their effect on the urban thermal environment
Authors: Priyadarsini, R. 
Wong, N.H. 
Keywords: Building materials
CBD area
CFD Simulations
Surface temperature
Urban heat island
Issue Date: 2005
Citation: Priyadarsini, R.,Wong, N.H. (2005). Building surfaces and their effect on the urban thermal environment. Architectural Science Review 48 (4) : 345-356. ScholarBank@NUS Repository.
Abstract: 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°C with the façade material having lower reflectance.
Source Title: Architectural Science Review
ISSN: 00038628
Appears in Collections:Staff Publications

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