Effect of Canyon Geometry on Outdoor Thermal Comfort: A case-study of high-density, warm-humid climate
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Journal Title
PLEA2013 - 29th International Conference Proceedings: Sustainable Architecture for a Renewable Future
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PLEA2013 - 29th International Conference Proceedings: Sustainable Architecture for a Renewable Future
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Sharmin, T., & Steemers, K. Effect of Canyon Geometry on Outdoor Thermal Comfort: A case-study of high-density, warm-humid climate. PLEA2013 - 29th International Conference Proceedings: Sustainable Architecture for a Renewable Future https://doi.org/10.17863/CAM.35210
Abstract
A successful urban planning and design solution ought to present a comfortable setting for its
pedestrians inside urban canyons, because it is fundamental to encourage a good quality urban life and promote
health and wellbeing of humans. Recent findings have demonstrated that microclimate inside urban canyons has
substantial influence upon the outdoor thermal comfort at the street level .This study, therefore, intends to devise early
stage building and urban design strategies to improve outdoor thermal comfort. For this study, a number of existing
urban canyons in Dhaka city have been chosen with a range of geometries combined with a variety of street
orientations. The microclimatic characteristics of the canyons are analysed through a high resolution CFD
microclimatic model: ENVI-met Version 4. Thermal comfort was evaluated with the PET index with the aid of
RayMan1.2. Important findings include that deeper street canyons result in reduced air temperature but increased
Tmrt thus presenting apparently conflicting design options to achieve outdoor comfort. However, such apparently
conflicting findings offer the potential for designers to find a variety of canyon geometries appropriate for a tropical
city context.
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External DOI: https://doi.org/10.17863/CAM.35210
This record's URL: https://www.repository.cam.ac.uk/handle/1810/287897
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