Abstract
Thermal models are presented for the typical methods of passive cooling of roof in the arid region of Rajasthan, India. The periodic analysis for hourly variation of roof cooling are presented for bare roof, insulation beneath the roof, evaporative cooling above the roof and roof pond with movable insulation system. Calculations were carried out for a typical summer day of May for Jodhpur (India). The models have been tested with the published experimental data of roof temperature. The predicted values of roof temperature obtained from the proposed models exhibited good agreement with the coefficient of correlation ranging from 0.94 to 0.96 and standard error 1.76 - 2.80 . The 0.05 m of water depth of roof pond with movable insulation is appropriate for better comfort condition in arid region.
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