Experimental determination of some micro-structural and hydrous properties of a terra cotta and modelisation of hygrothermal transfers - Université de Limoges Accéder directement au contenu
Article Dans Une Revue Journal of Applied Sciences Année : 2009

Experimental determination of some micro-structural and hydrous properties of a terra cotta and modelisation of hygrothermal transfers

Résumé

This 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 lube 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.

Domaines

Matériaux
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Dates et versions

hal-00630706 , version 1 (10-10-2011)

Identifiants

Citer

S. Kam, Joseph Bathiébo, L. Zerbo, Julien Soro, K. Traoré, et al.. Experimental determination of some micro-structural and hydrous properties of a terra cotta and modelisation of hygrothermal transfers. Journal of Applied Sciences, 2009, 9 (19), pp.3424-3432. ⟨10.3923/jas.2009.3424.3432⟩. ⟨hal-00630706⟩
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