A Model for Correlating Flow Boiling Heat Transfer in Augmented Tubes and Compact Evaporators

[+] Author and Article Information
S. G. Kandlikar

Mechanical Engineering Department and Plasma Fusion Center, Massachusetts Institute of Technology, Cambridge, MA 02139

J. Heat Transfer 113(4), 966-972 (Nov 01, 1991) (7 pages) doi:10.1115/1.2911229 History: Received July 30, 1990; Revised January 08, 1991; Online May 23, 2008


The additive model for the convective and nucleate boiling components originally suggested by Bergles and Rohsenow (1964) for subcooled and low-quality regions was employed in the Kandlikar correlation (1990a) for flow boiling in smooth tubes. It is now extended to augmented tubes and compact evaporators. Two separate factors are introduced in the convective boiling and the nucleate boiling terms to account for the augmentation effects due to the respective mechanisms. The fin efficiency effects in the compact evaporator geometry are included through a reduction in the nucleate boiling component over the fins due to a lower fin surface temperature. The agreement between the model predictions and the data reported in the literature is within the uncertainty bounds of the experimental measurements.

Copyright © 1991 by The American Society of Mechanical Engineers
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