Simplified model for the behaviour of a roof-spray cooling system

P. Gandhidasan

Applied Energy, 1989, vol. 34, issue 1, 69-77

Abstract: Roof-spray cooling systems are used to reduce the heat flux entering through the roof of a building by spraying a fine mist of water on the roof surface. This paper presents a simple periodic thermal model to predict the performance of a roof-spray evaporative cooling system. The governing one-dimensional transient equation of heat conduction is solved along with appropriate periodic boundary conditions, and expressions for the temperatures of the roof surface and ceiling have been obtained. The present study also includes the effect of wind velocity and ambient water-vapour pressure on the system's performance.

Date: 1989
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