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

›› 2010, Vol. 18 ›› Issue (4): 544-553.

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

Ludovic Montastruc^1,2, Pascal Floquet¹, Volker Mayer³, Iordan Nikov², Serge Domenech¹

1. Universitéde Toulouse, Laboratoire de Génie Chimique, U. M. R.5503 CNRS/INP/UPS, 31432 Toulouse, France;
2. ProBioGEM Laboratory, Polytech'lille, 59665, Villeneuve d'Ascq, France;
3. Laboratoire Paul Painlevé, U. M. R.CNRS 8524, U. F. R. de Mathématiques, 59655 Villeneuve d'Ascq Cedex, France

收稿日期:2009-04-23 修回日期:2010-03-15 出版日期:2010-08-28 发布日期:2010-08-28
通讯作者: Ludovic Montastruc, E-mail:ludovic.montastruc@ensiacet.fr

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

Ludovic Montastruc^1,2, Pascal Floquet¹, Volker Mayer³, Iordan Nikov², Serge Domenech¹

1. Universitéde Toulouse, Laboratoire de Génie Chimique, U. M. R.5503 CNRS/INP/UPS, 31432 Toulouse, France;
2. ProBioGEM Laboratory, Polytech'lille, 59665, Villeneuve d'Ascq, France;
3. Laboratoire Paul Painlevé, U. M. R.CNRS 8524, U. F. R. de Mathématiques, 59655 Villeneuve d'Ascq Cedex, France

Received:2009-04-23 Revised:2010-03-15 Online:2010-08-28 Published:2010-08-28

摘要/Abstract

摘要： 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 as-sumption 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 α (ratio convection/capacity) and β(quantity of energy/capacity) .The proposed problem is solved by a mathematical method in the Laplace domain.When α→∞ (infinitely high heat transfer coefficient) or β→0 (infinitely large heat capacity),the limiting case is isothermal.When the diffusion is rapid (α<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 withαandβas high as possible.

关键词: adsorption, non-isothermal, energy, pellet

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 as-sumption 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 α (ratio convection/capacity) and β(quantity of energy/capacity) .The proposed problem is solved by a mathematical method in the Laplace domain.When α→∞ (infinitely high heat transfer coefficient) or β→0 (infinitely large heat capacity),the limiting case is isothermal.When the diffusion is rapid (α<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 withαandβas high as possible.

Key words: adsorption, non-isothermal, energy, pellet

Ludovic Montastruc, Pascal Floquet, Volker Mayer, Iordan Nikov, Serge Domenech. Kinetic Modeling of Isothermal or Non-isothermal Adsorption in a Pellet:Application to Adsorption Heat Pumps[J]. , 2010, 18(4): 544-553.

参考文献

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

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

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