Analysis of Three-Fluid, Crossflow Heat Exchangers

[+] Author and Article Information
N. C. Willis

NASA Manned Spacecraft Center, Houston, Texas

A. J. Chapman

Rice University, Houston, Texas

J. Heat Transfer 90(3), 333-338 (Aug 01, 1968) (6 pages) doi:10.1115/1.3597512 History: Received August 02, 1967; Online August 25, 2011


In this study, the performance of three-fluid, crossflow heat exchangers is determined and presented graphically in terms of the temperature effectiveness of two of the fluids. The effectiveness is determined as a function of heat exchanger size for sets of fixed operating conditions. The introduction of nondimensional operating variables reduces the volume of data required to represent a practical range of operating conditions. The number of boundary conditions for the temperatures is reduced from three to one by the introduction of a nondimensional inlet temperature parameter. Effectiveness factors are determined for a wide range of operating parameters for single-pass, three-fluid heat exchangers. Performance of multipass three-fluid heat exchangers for both cocurrent and countercurrent flow is studied for selected operating conditions.

Copyright © 1968 by ASME
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