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Enhancement of absorption efficiency for a laminar film flow by hydrodynamic conditions generated by a new type of column wall

Negny, Stéphane and Meyer, Michel and Prevost, Michel Enhancement of absorption efficiency for a laminar film flow by hydrodynamic conditions generated by a new type of column wall. (2001) Biochemical Engineering Journal, vol. 8 (n° 1). 7-13 . ISSN 1385-8947

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Official URL: http://dx.doi.org/10.1016/S1385-8947(00)00189-3

Abstract

Anumerical model is developed to quantify the effects of hydrodynamics on heat and mass transfer during an absorption, for a laminar film flowing over awavywall column. First of all, the modelling is written for a singlewave of thewall shape. Then, an experimental set up, composed of aCCDvideo camera, validates this model. Finally, the model is extended to an entire column. The results include a comparison with the simulation of a smooth column having the same geometrical and operating conditions. Thewavy column dissipates more heat through the wall (43%) due to the presence of a vortex in the furrows. This leads to an increase of the absorptionrate at the interface (10%). Moreover, the wavy column reaches equilibrium more rapidly in spite of a lower mean film temperature.

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 Chemical Engineering Journal website : http://www.sciencedirect.com/science/journal/13858947
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Réaction, mélange & séparation (RMS)
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Deposited By: Hélène Dubernard

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