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A CORRELATION OF MEAN HEAT-TRANSFER COEFFICIENTS FOR TWO-PHASE TWO-COMPONENT FLOW IN A VERTICAL TUBE

M.M. Vijay
Div. of Mech. Engineering, National Research Council of Canada, Ottawa, Canada, K1A 0R6

M. A. Aggour
Production Research Division, Esso Resources Canada, Calgary, Canada

G. E. Sims
Department of Mechanical and Industrial Engineering, University of Manitoba, Winnipeg, Manitoba, Canada

Abstract

For the situation of two-phase two-component (gas-liquid) forced convective heat transfer in co-current upward flow in a vertical tube, an extensive set of data (glycerine-air, 75% glycerine in water solution-air, water-air, water-helium and water-Freon 12) taken on one apparatus was correlated using the combination of coordinates orginally proposed by Fried for horizontal two-phase two-component flow. The correlation is of the form
ψ2 = (φ2)n
where n depends slightly on the flow pattern, ψ2 is a ratio of heat-transfer coefficients and φ2 is a ratio of frictional pressure drops. A single correlation independent of the flow pattern is possible giving n = 0.451 with an rms deviation of the data of 19.0% for the 367 data points included in the analysis. The range of data was: ReSL 1.8 to 1.3×105; PrL 5.6 to 7000; VSG/VSL 0.013 to 5200; pG/pL 2×10−4 to 0.01.

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