Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2009.3424.3432KamS.BathieboJ.ZerboL.SoroJ.TraoreK.BlanchartP.KienoF.122009919This experimental study present some micro-structural and thermo-hydrous properties of terra cotta. A tube, built from this porous material, bathes in a tank filled with water. The internal surface of the wall carries a water film which evaporates by forced convection of hot and dry air, allowing the storage of negative kilocalories. The form of the tube used is a factor that allows neglecting the variations of the thermo-physical properties of the air between the entry and the exit of the tube. A computer code (based on the equation of Darcy for fluid crossing saturated porous material, the equation of Laplace on pressures and the equation of heat in polar co-ordinates) was established to describe the thermo-hydrous behavior of the material. The code makes it possible to determine the zones of intrinsic permeability favorable to a continuous evaporation without draining off the water film and it also allows the calculation of the average temperature of bath.]]>Azizi, S., C. Moyne and A. Degiovani,1988Bejan, A.,1995Berman, L.D.,1961Boukadidia, N. and S.B. Nasrallah,2001Conrad, R.I. and J.S. Carey,2007CTTB,1998Gilliland, E.R. and T.K. Sherwood,1934Kondjoyan, A. and J.D. Daudin,1993Nield, D. and A. Bejan,1999Perrin, B.L., G. Wardeh and F. Poeydemenge,2004Prabal, T., R.I. Conrad and J.S. Carey,2008Saccadura, J.F.,1982