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Kinetic Modeling of Isothermal or Non-isothermal Adsorption in a Pellet: Application to Adsorption Heat Pumps

Montastruc, Ludovic and Floquet, Pascal and Mayer, Volker and Nikov, Iordan and Domenech, Serge Kinetic Modeling of Isothermal or Non-isothermal Adsorption in a Pellet: Application to Adsorption Heat Pumps. (2010) Chinese Journal of Chemical Engineering, vol. 18 (n°4). pp. 544-553. ISSN 1004-9541

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Official URL: http://dx.doi.org/10.1016/S1004-9541(10)60257-1

Abstract

Understanding the interaction between a fluid and a solid phase is of fundamental importance to the design of an adsorption process. Because the heat effects associated with adsorption are comparatively large, the assumption of isothermal behavior is a valid approximation only when uptake rates are relatively slow. In this article, we propose to determine when it is needed to choose the isothermal or non-isothermal assumption according to two physical parameters alpha (ratio convection/capacity) and beta(quantity of energy/capacity). The proposed problem is solved by a mathematical method in the Laplace domain. When alpha-> infinite (infinitely high heat transfer coefficient) or beta->0(infinitely large heat capacity), the limiting case is isothermal. When the diffusion is rapid (alpha<10) the kinetics of sorption is controlled entirely by heat transfer. If the adsorption process is to be used as a heat pump, it shall be represented by an isotherm model with alpha and beta as high as possible.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com . The original PDF of the article can be found at The Chinese Journal of Chemical Engineering website : http://www.elsevier.com/wps/find/journaldescription.cws_home/707628/description#description
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Polytech'Lille (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université Lille 1, Sciences et Technologies - Lille 1 (FRANCE)
Laboratory name:
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Procédés Systèmes Industriels (PSI) - Conception Optimisation Ordonnancement des Procédés (COOP)
Laboratoire Paul Painlevé (Lille, France)
Laboratoire de Procédés Biologiques, Génie Enzymatique et Microbien - ProBioGEM (Villeneuve d'Ascq, France)
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Procédés Systèmes Industriels (PSI) - AnalyseLaboratoire de Procédés Biologiques, Génie Enzymatique et Microbien - ProBioGEM (Ville fonctionnelle des procédés
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Deposited By: Ludovic MONTASTRUC
Deposited On:03 Dec 2010 09:48

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