Heat Transfer Characterization of a Finned-Tube Heat Exchanger (With and Without Condensation)

[+] Author and Article Information
S. A. Idem

Tennessee Technological University, Mechanical Engineering Department, Cookeville, TN 38505

A. M. Jacobi

The Johns Hopkins University, Department of Mechanical Engineering, Baltimore, MD 21218

V. W. Goldschmidt

Purdue University, School of Mechanical Engineering, W. Lafayette, IN 47907

J. Heat Transfer 112(1), 64-70 (Feb 01, 1990) (7 pages) doi:10.1115/1.2910366 History: Received January 26, 1988; Revised July 27, 1988; Online May 23, 2008


The effects upon the performance of an air-to-water copper finned-tube crossflow heat exchanger due to condensation on the outer surface are considered. A four-tube, two-pass heat exchanger was tested over a Reynolds number range (based on hydraulic diameter) from 400 to 1500. The coil was operated both in overall parallel and overall counterflow configurations. Convective heat and mass transfer coefficients are presented as plots of Colburn j-factor versus Reynolds number. Pressure losses are, similarly, presented as plots of the friction factor versus Reynolds number. Enhancement of sensible heat transfer due to the presence of a condensate film is also considered.

Copyright © 1990 by The American Society of Mechanical Engineers
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