Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14965
Title: Microclimatic modeling of the urban thermal environment of Singapore to mitigate urban heat island
Authors: PRIYADARSINI RAJAGOPALAN M.T
Keywords: Urban Heat Island, CFD, geometry, façade materials, velocity, temperature.
Issue Date: 6-Oct-2005
Source: PRIYADARSINI RAJAGOPALAN M.T (2005-10-06). Microclimatic modeling of the urban thermal environment of Singapore to mitigate urban heat island. ScholarBank@NUS Repository.
Abstract: This study investigates the key factors causing the Urban Heat Island effect in Singapore and explores the possibilities of improving heat extraction rate by optimizing air flow in selected hot spots. The effect of building geometry, fa??ade materials and the location of air conditioning condensers on the outdoor air temperature was explored using Computational Fluid Dynamics (CFD). It was found that at very low wind speeds, the effect of fa??ade materials and their colours was very significant and the temperature at the middle of a narrow canyon increased up to 2.5A?C with the fa??ade material having lower albedo. It was also found that strategically placing a few high-rise towers will enhance the air flow inside the canyon thereby reducing the air temperature. Adopting an optimum H/W ratio for the canyons increased the velocity by up to 35% and reduced the corresponding temperature by up to 0.7A?C.
URI: http://scholarbank.nus.edu.sg/handle/10635/14965
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