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Analysis of transient laminar mass transfer in a parallel-plate dialyser

✍ Scribed by Spas D. Kolev; Willem E. van der Linden

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 919 KB
Volume: 257
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(92)85186-a

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✦ Synopsis

Mass transfer under lammar flow condltlons IS discussed on the basis of the Navler-Stokes equations and the axially dispersed plug-flow model By fittmg the results obtamed with these two approaches, relatronshlps can be derrved for predlctmg the mass-transfer coefficient and the Peclet number m a parallel-plate lammar flow system with one unpermeable wall and an opposite wall at which the concentration LS uniform Thus smgle-stream relatlonshlp can be utlhzed for calculatmg the mass-transfer coefficients m both channels of a co-current parallel-plate &alyser It IS shown that the Peclet number m the axlally dispersed plug-flow model derNed for a parallel-plate flow where both sIdea are Impermeable gves better results when apphed to the co-current dralyser than the smgle-stream relationship The results obtamed allow the mathematical modelhng of process and analytlcal flow-through mamfolds incorporating a dialysis module

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