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Experimental determination of some micro-structural and hydrous properties of a terra cotta and modelisation of hygrothermal transfers
Abstract : 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.
https://hal-unilim.archives-ouvertes.fr/hal-00630706
Contributeur : Claire Douady <>
Soumis le : lundi 10 octobre 2011 - 17:00:54
Dernière modification le : lundi 14 septembre 2020 - 13:30:02
Contributeur : Claire Douady <>
Soumis le : lundi 10 octobre 2011 - 17:00:54
Dernière modification le : lundi 14 septembre 2020 - 13:30:02
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