Original scientific paper
Forced Convection Solid-Liquid Mass Transfer at a Surface of Tube Bundles under Single Phase Flow
S.A. Nosier
Y.A. Alhamed
A.A. Bakry
I.S. Mansour
Abstract
Solid-liquid mass transfer characteristics of in-line tube bank were investigated by measuring the rate of diffusion-controlled dissolution of copper surface in dichromate solution. Variables studied were the number of rows in the tube bank, physical properties of the solution, and flow rate of the solution. The data were correlated for the conditions: 937 < Sc < 1300, 173 < Re < 385, 1 < N < 5, by the equation Sh = 2.68 Re0.465 Sc0.33 N–0.35 + 35.35.
The addition of Polyox WSR 301 as a drag reducing agent leads to a decrease in the mass transfer coefficient, which ranged from 49 to 83 % depending on the mass fraction of the polymer, number of tube bundles and the liquid flow rates.
Keywords
Solid-liquid mass transfer; mass transfer coefficient; tube bank; drag reducing agent; single-phase flow
Hrčak ID:
16375
URI
Publication date:
1.10.2007.
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