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A comparison of the tube-side performance of enhanced heat transfer tubing for naval condensers

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Author
Alexander, Ronald Keith
Date
1982-12
Advisor
Marto, P.J.
Second Reader
Kelleher, Matthew
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Abstract
The data of several investigators conducting research in the area of enhanced heat transfer in internally ribbed and spirally corrugated tubes is compiled and examined to determine the effects of the geometric characteristics of enhanced tubing on flow resistance and heat transfer. The data are compared to determine if there are any relations, either new or previously published, which can be of use to the designer to predict the friction factor and heat transfer coefficient for a specified enhanced tube. Empirical relations are recommended for friction factor and heat transfer coefficient for single-start and multiplestart spirally corrugated tubes based on the lav/ of the wall similarity analysis and a heat transfer similarity analysis. The empirical relations are compared to experimental data for single-start and multiple-start corrugated tubes with pitch-to-groove ratios greater than 10 and dimensionless groove depths less than 0.05. The recommended relations correlate with the experimental data for heat transfer coefficient within ±15% for 94% of the specified tubes.
URI
http://hdl.handle.net/10945/20101
NPS Report Number
NPS69-82-008
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  • 1. Thesis and Dissertation Collection, all items

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Showing items related by title, author, creator and subject.

  • Thumbnail

    An experimental comparison of enhanced heat transfer condenser tubing. 

    Fenner, James Henry (Monterey, California. Naval Postgraduate School, 1978-09);
    Ten 15.9 mm (5/8 in.) nominal outside diameter geometrically enhanced tubes of different metals were tested to determine their heat transfer and hydrodynamic performance. Results were compared to smooth copper-nickel tubes. ...
  • Thumbnail

    Nucleate pool-boiling of R-114 refrigerant and oil mixtures from water-heated enhanced surfaces 

    McManus, Stephen M. (1986-06);
    Heat- transfer measurements were made for a single, water-heated tube in a pool of R-114 to simulate operating conditions of a water chiller. Data were obtained for a smooth copper tube, and for two commercially ...
  • Thumbnail

    An experimental study of filmwise condensation on horizontal enhanced condenser tubing 

    Ciftci, Huseyin (Monterey, California : Naval Postgraduate School, 1979); NPS-69-79-014
    Heat transfer and hydrodynamic performance of eight different geometrically enhanced tubes of different metals was determined. Results were compared to a 25.4 mm (1.0 inch) OD, smooth stainless steel tube. Steam at ...
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