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ARPN Journal of Science and Technology >> Volume 7, Issue 1, January 2017

ARPN Journal of Science and Technology


Predicting Heat Dissipation in Urban Areas Using Law of Thermodynamics

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Author Abdullah Al Fahad, Kamaruzzaman Kushal
ISSN 2225-7217
On Pages 110-113
Volume No. 5
Issue No. 2
Issue Date March 01, 2015
Publishing Date March 01, 2015
Keywords Regional climate, Prediction, urban area, dissipation of heat, WRF model



Abstract

The heating of the urban surfaces during the daytime sets the initial temperature, and this overheating is dissipated during the night time through radiation and mean convection motion over the urban surface. The energy balance shows that this cooling effect can be quantified in an exponential decay in time. The minimum temperature reached at the end of this cooling period. For explaining the model temperature data of six major cities of Bangladesh, from 21st January to 23rd January of 2014 was used. The energy balance shows that this cooling effect can be quantified in an exponential decay in time. This can make a relation with the Newton’s law of cooling. The temperature decay depends on many natural factors such as wind speed, properties of air in the region, urban length etc. Here in the model it is assumed that the wind speed is constant. Using this model we might be able to predict the temperature at any time at night. This model is not a universal model, but it works well for a specific season. Further this model will be applied under different condition in different regions.


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