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RESEARCH PAPERS

Thermal Coupling in Laminar Flow Double-Pipe Heat Exchangers

[+] Author and Article Information
G. Pagliarini

Istituto di Fisica Tecnica, Università degli Studi di Bologna, 40136 Bologna, Italy

G. S. Barozzi

Istituto di Fisica Tecnica, Università degli Studi di Trieste, 34127 Trieste, Italy

J. Heat Transfer 113(3), 526-534 (Aug 01, 1991) (9 pages) doi:10.1115/1.2910595 History: Received July 05, 1989; Revised November 09, 1990; Online May 23, 2008

Abstract

Thermal interaction between the streams of laminar flow double-pipe heat exchangers is investigated theoretically by accounting for axial conduction along the wall separating the fluids. In a countercurrent arrangement, thermal coupling is demonstrated to have a definite influence on all the more important heat transfer parameters, such as the wall temperature, the heat flux density, the local entropy production rate, and the Nusselt number distributions. The overall performance of the device is considered under a second law point of view, and a complete parametric study is carried out.

Copyright © 1991 by The American Society of Mechanical Engineers
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