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Journal of Porous Media
Facteur d'impact: 1.49 Facteur d'impact sur 5 ans: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN Imprimer: 1091-028X
ISSN En ligne: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v21.i7.10
pages 577-588

CHARACTERIZATION OF THERMOPHYSICAL PROPERTIES OF SILICA GEL

Boutheina Zallama
Université de Monastir, École Nationale d'Ingénieurs de Monastir,Laboratoire LESTE, Avenue Ibn El Jazzar 5019, Monastir, Tunisia
L.Z. Ghedira
Université de Monastir, École Nationale d'Ingénieurs de Monastir, Laboratoire LESTE, Avenue Ibn El Jazzar 5019, Monastir, Tunisia
Sassi Ben Nasrallah
Laboratoire d'Études des Systèmes Thermiques et Énergétiques, Ecole Nationale d'Ingénieurs de Monastir, Monastir 5019 Tunisie

RÉSUMÉ

In this work, an experimental characterization study of a granular porous media, i.e., Rubin silica gel, which is already well known for its hygroscopic properties, is presented. A comparison of both dry and wet conditions is performed. For this purpose, we will rather focus on the determination of the thermophysical properties of this media because there is a lack of studies in this field in the literature. The characterization has been experimentally done by using the method called "box". The thermal conductivity and the thermal diffusivity were measured and analyzed. The specific heat capacity was determined by the measured thermal conductivity, the measured thermal diffusivity, and reported silica gel density for both states. The obtained results lead to a better comprehensive control of the media response regarding the heat flux imposed and will be used later in a simulation investigation of heat and mass transfer in a reactor filled with silica gel.


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