کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1551971 | 998158 | 2008 | 19 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Microclimatic modeling of the urban thermal environment of Singapore to mitigate urban heat island Microclimatic modeling of the urban thermal environment of Singapore to mitigate urban heat island](/preview/png/1551971.png)
This study investigates the urban heat island effect in Singapore and examines the key factors causing this effect. The possibilities of improving heat extraction rate by optimizing air flow in selected hot spots were explored. The effect of building geometry, façade materials and the location of air-conditioning condensers on the outdoor air temperature was explored using computational fluid dynamics (CFD) simulations. It was found that at very low wind speeds, the effect of façade materials and their colours was very significant and the temperature at the middle of a narrow canyon increased up to 2.5 °C with the façade 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 0.7 °C.
Journal: Solar Energy - Volume 82, Issue 8, August 2008, Pages 727–745