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Journal of Porous Media
Facteur d'impact: 1.49 Facteur d'impact sur 5 ans: 1.159 SJR: 0.504 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.v16.i6.30
pages 515-525

EXPERIMENTAL SORPTION DYNAMIC IN PACKED BED OF SILICA GEL

Joselma A. Amorim
Federal University of Paraiba, Campus Universitário, João Pessoa PB, Brazil
H. M. Vieira
Federal University of Paraiba, Campus Universitário, João Pessoa PB, Brazil
Cicero H. T. Andrade
Department of Mechanical Engineering, Federal University of Paraiba, Joao Pessoa, Paraiba, Brazil
J. M. Medeiros
Federal Institute of Education, Science, and Technology of Paraiba, Joao Pessoa, Paraiba, Brazil
J. C. Santos
Department of Production Engineering, Regional University of Cariri, Juazeiro do Norte, Ceara, Brazil
Jose Mauricio Gurgel
Federal University of Paraiba, Campus Universitário, João Pessoa PB, Brazil

RÉSUMÉ

This paper studies both numerically and experimentally the phenomenon of heat and mass transfer occurring in an adsorptive fixed bed. The experiment consists of a cylindrical column filled with uniform grain silica gel subjected to humid airflow. The computer code developed for this work simulates the influence of some physical and geometrical parameters derived from the adsorptive and regenerative processes that occur in packed beds during dehumidification. It was used as a one-dimensional, transient, and nonisothermal model. The equations were discretized via finite volume method, fully implicit formulation, and colocated arrangement. Linear systems have been solved by the Thomas algorithm. The experimental and numerical results are described as temperature profiles along three different speeds observed during regeneration and under various conditions of relative humidity at the adsorptive bed outlet. These results are consistent with the physical conditions of the desired outlet.


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