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    Heat transfer coefficients for Freon-12 condensing within a horizontal tube

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    Author
    Deans, Harry A
    Date
    1957
    Advisor
    Akers, W. W.
    Degree
    Master of Science
    Abstract
    The purpose of this investigation was to continue the study begun by Crosser (5) of heat transfer coefficients for condensing vapors in a horizontal tube. Condensing heat transfer coefficients for Freon-12 were measured over a wide range of vapor velocities, fluid properties, and temperature differences. Using an analogy to one-phase flow, the following equation was derived for the region where the film of condensed liquid is annular and turbulent: [formula handwritten] It was found that the data could be correlated over the entire range of vapor velocity if the group [handwritten text] were plotted versus the Reynolds. number, [handwritten text]. The slope of the line through the data varied from approximately .2 at low Reynolds number to the .8 value at Reynolds numbers above 2 x 104. The excellent agreement of data from different pressures and temperature differences indicate that the density ratios [handwritten text] adequately expresses the effect of liquid loading.
    Citation
    Deans, Harry A. "Heat transfer coefficients for Freon-12 condensing within a horizontal tube." (1957) Master’s Thesis, Rice University. http://hdl.handle.net/1911/89345.
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    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892