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Enhancement of mass transfer in flow channels under thermal gradients
Author(s) -
Bendrich Guido,
Shemilt Leslie W.
Publication year - 1998
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450760504
Subject(s) - laminar flow , mass transfer , isothermal process , isothermal flow , turbulence , flow (mathematics) , thermodynamics , mechanics , mass transfer coefficient , mass flow , materials science , laminar flow reactor , mass flow meter , chemistry , volumetric flow rate , open channel flow , physics
Overall mass transfer coefficients, at the solid liquid interface in a rectangular cross‐section flow reactor, were obtained using the limiting current technique. Empirical correlations were developed for single‐phase flow for a full range of surface configurations, for laminar and turbulent flow regimes, and for isothermal and non‐isothermal conditions. Isothermal mass transfer was almost doubled by the selection of the reactor slope and surface configuration. Imposition of up to a 30°C difference at the interface, enhanced mass transfer approximately four times, over the isothermal case. Mathematical simulation for mass transfer in flow reactors, is shown to agree within 15% of experimental values found in the literature and for the experiments reported here.