The Effect of Water on Out Door Paved Surfaces; A Strategy to Mitigate Urban Heat Island

Didel, Mabilong Juliet and Ossen, Dilshan Remaz (2011) The Effect of Water on Out Door Paved Surfaces; A Strategy to Mitigate Urban Heat Island. In: 5th South East Asian Technical University Consortium Symposium, 24th – 25th February 2011, Hanoi.

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Abstract

Urban Cities can be several degrees warmer than surrounding regions due to the Built Environment and concentration of human activities, a phenomenon known as Urban Heat Island. Pavements have become an important contributor to this effect by altering natural land cover over significant portions of the urban area. This paper presents an experimental study aimed at evaluating the effect of water on outdoor paved surfaces as a strategy to mitigate the rise in temperatures and improve the comfort index for the inhabitants of the outdoor space. The experiment attempts to quantify the thermal Performance of four commonly used pavement materials within the premises of Universiti Tecknologi Malaysia, this involved evaluating the performance of the materials before and after water was applied with respect to their surface-Air temperature, Radiant heat measured manually using the Infrared Thermometer, Weather Tracker and Globe thermometer. The data collected was extensively analyzed using Statistical techniques. Comparative studies were performed to evaluate the thermal performance of the pavement samples and the degree of temperature mitigated when water was applied on the pavement material. Results show that The Surface Temperature, Air Temperature and Radiant Heat were significantly higher for Asphalt compared to the Concrete Interlocking tiles, terracotta blocks and clay bricks, and the temperature of all pavement materials was most elevated at mid- day as a result of direct exposure to solar radiation as well as the Average temperature of 2-30C reduced on the pavement surface after water was applied. With respect to this an improvement on the outdoor air temperature will be observed with the presence of water on outdoor paved surfaces.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Urban Heat Island, Pavements, Thermal Performance, Water
Divisions: Faculty of Built Environment > Landscape Architecture
Depositing User: FAB IR Admin
Date Deposited: 24 Jun 2013 05:45
Last Modified: 24 Jun 2013 05:45
URI: http://epublication.fab.utm.my/id/eprint/100

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