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Article Dans Une Revue Chemical Engineering Journal Année : 2001

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

Résumé

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.
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Dates et versions

hal-03604741 , version 1 (10-03-2022)

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Citer

Stéphane Negny, Michel Meyer, Michel Prevost. Enhancement of absorption efficiency for a laminar film flow by hydrodynamic conditions generated by a new type of column wall. Chemical Engineering Journal, 2001, 8 (1), pp.7-13. ⟨10.1016/S1385-8947(00)00189-3⟩. ⟨hal-03604741⟩
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