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RESEARCH PAPERS

Some Fundamental Relationships for Tubular Heat Exchanger Thermal Performance

[+] Author and Article Information
Krishna P. Singh

Engineering, Joseph Oat Corporation, Camden, N.J. 08104

J. Heat Transfer 103(3), 573-578 (Aug 01, 1981) (6 pages) doi:10.1115/1.3244504 History: Received October 23, 1980; Online October 20, 2009

Abstract

Some basic relationships to characterize tubular heat exchanger thermal performance are derived in terms of the well-known state variables. It is shown that the knowledge of η (NTU), R (heat capacity rate ratio), and partial derivatives of the temperature efficiency P with respect to η and R enables complete characterization of the exchanger performance around an operating point. Thus, the exchanger performance can be readily predicted for the so-called “subdesign” conditions. Likewise, additional criteria to compare various exchanger styles for a given range of operating conditions can be developed. Two such criteria are developed in this paper.

Copyright © 1981 by ASME
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