TECHNICAL PAPERS: Heat Transfer Enhancement

Heat Transfer and Friction Characteristics of Internal Helical-Rib Roughness

[+] Author and Article Information
R. L. Webb

Department of Mechanical Engineering, Pennsylvania State University, University Park, PA 16802e-mail: rlwebb@psu.edu

R. Narayanamurthy, P. Thors

Wolverine Tube, Decatur, AL 35609

J. Heat Transfer 122(1), 134-142 (Oct 02, 1999) (9 pages) doi:10.1115/1.521444 History: Received February 03, 1999; Revised October 02, 1999
Copyright © 2000 by ASME
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Gee,  D. L., and Webb,  R. L., 1980, “Forced Convection Heat Transfer in Helically Rib-Roughened Tubes,” Int. J. Heat Mass Transf., 23, pp. 1127–1136.
Briggs,  D. E., and Young,  E. H., 1969, “Modified Wilson Plot Techniques for Obtaining Heat Transfer Correlations for Shell and Tube Heat Exchangers,” Chem. Eng. Prog. Symp. Ser., No. 92, 65, pp. 35–45.
Seider,  E. N., and Tate,  G. E., 1936, “Heat Transfer and Pressure Drop of Liquids in Tubes,” Ind. Eng. Chem., 28, p. 1429.
Incropera, F. P., and DeWitt, D. P., 1996, Fundamentals of Heat and Mass Transfer, 4th Ed., John Wiley and Sons, New York.
Webb,  R. L., Eckert,  E. R. G., and Goldstein,  R. J., 1971, “Heat Transfer and Friction in Tubes With Repeated-Rib Roughness,” Int. J. Heat Mass Transf., 14, pp. 601–617.
Ravigururajan,  T. S., and Bergles,  A. E., 1996, “Development and Verification of General Correlations for Heat Transfer and Pressure Drop in Single-Phase Turbulent Flow in Enhanced Tubes,” Exp. Therm. Fluid Sci., 13, pp. 55–70.
Thors, P., Clevinger, N. R., Campbell, B. J., and Tyler, J. T., 1997, “Heat Transfer Tubes and Methods of Fabrication Thereof,” U.S. Patent No. 5,697,430, assigned to Wolverine Tube.


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Error plot showing jpre/jexp for the Ravi and Bergles 8 correlation
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Photos of commercially used helically ribbed tubes; (a) Wolverine Turbo-Chil, (b) Wolverine Turbo-CII, (c) illustration of internally finned tube
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Cross section drawing of fin
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Modified Wilson plot for Tube 2
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Error plot showing fpre/fexp versus Re for the f-factor correlation for tubes in patent
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Error plot showing jpre/jexp versus Re for the j-factor correlation for tubes in patent
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Tubes tested in present work
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Table 1 tube performance characteristics: (a) f versus Re, (b) j versus Re, (c) [j/(f/2)]/[j/(f/2)]p versus Re
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Error plots showing fpre/fexp versus Re for the Eq. (6) friction factor correlation
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Error plot showing versus jpre/jexp Re for the Eq. (7) j-factor correlation



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