Numerical study of the cooling of hot dry air by forced convection of a water film deposited on a cylindrical wall

The costs of space cooling using conventional energy sources are prohibitive in Sahelian zones. We present a numerical study of the cooling of hot, dry air by forced convection through a cylindrical tube thermally insulated on its outer wall and bearing on its inner wall a thin absorbent cloth, constantly saturated with water. In hot and dry climate (as in Burkina Faso), we can (and it is useful to) lower the temperature of a water film [1], [2], [3], or a stream of air through evaporation with the use of low-cost systems. We present the results of a study of optimization of the production of cold moist air, according to the dimensions of the tubes.