โ Scribed by T.K. Ross; A.A. Wragg
No coin nor oath required. For personal study only.
Rates of mass transfer in conditions of transport control and in the mass transfer entry region have been determined by measuring limiting currents for the deposition of copper from acidified solutions of copper sulphate on to copper cathodes of different lengths. The cathodes formed part of the inner wall of an annular flow cell and conditions were such that in both streamline and turbulent flow the hydrodynamic conditions were fully developed at the mass-transfer section. The variation of the mass transfer coefficient with electrode length has been clearly demonstrated, and results for streamline flow have been compared with a form of the L&&que equation suitably modified to account for the annular geometry. The data have been successfully correlated by the equation? Sh = 1.76(Re. SC d IL))"" Im turbulenten Gebiet mit einem Radienverhlltnis von 0,s lassen sich die Ergebnisse durch die Gleichung darstellen. St = 0,276 Sc-*18Re-o,4~(d L)l/* %Y
๐ SIMILAR VOLUMES
Convective diffusion theory has been utilized to describe mass transfer in an annulus under conditions of laminar flow. Rates of dissolution of benzoic acid in water were experimentally measured for values of annular core to diameter ratio, k >04. The rates were consistent with theoretical predictio