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A HEAT-TRANSFER CORRELATION FOR LIQUID-SOLID FLOWS IN HORIZONTAL PIPES
Date
1994-08-01
Author
OZBELGE, TA
SOMER, TG
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Heat transfer from a solid surface to a fluid-solid suspension in vertical or horizontal transport is of importance in the design of heat-exchangers, driers, fluidized beds, and slurry pipeline reactors. There are fewer studies on heat transfer in liquid-solid flows than on gas-solid flows. In this paper, a correlation for heat transfer to dilute liquid-solid flows in a horizontal pipe is presented. Suspension properties were used to derive the following equation: Nu(s) = 0.202Res0.6Prs0.675(D/d(p))0.092(mu(s)/mu(w))-1.95 This correlation can be used to estimate the heat transfer coefficients of liquid-solid two-phase flows for the following ranges of variables: Reynolds number Re(s), 27 000-120 000; Prandtl number Pr(s), 2.1-3.4; the ratio of suspension viscosity to the viscosity of water at the wall temperature mu(s)/mu(w), 1.17-1.83; the ratio of pipe diameter to the particle diameter D/d(p), 182-512; volume fraction of solids in the feed slurry C(f), 0.005-0.03. The accuracy of the correlation is approximately +/-20%.
Subject Keywords
Biochemistry
URI
https://hdl.handle.net/11511/65414
Journal
CHEMICAL ENGINEERING JOURNAL AND THE BIOCHEMICAL ENGINEERING JOURNAL
DOI
https://doi.org/10.1016/0923-0467(94)87004-7
Collections
Department of Chemical Engineering, Article