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RESEARCH PAPERS

Multipass Plate Heat Exchangers—Effectiveness-NTU Results and Guidelines for Selecting Pass Arrangements

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

Mechanical Engineering Department, Rochester Institute of Technology, Rochester, NY 14623-0887

R. K. Shah

Harrison Radiator Division, General Motors Corporation, Lockport, NY 14094-1896

J. Heat Transfer 111(2), 300-313 (May 01, 1989) (14 pages) doi:10.1115/1.3250678 History: Received July 17, 1987; Online October 20, 2009

Abstract

Plate heat exchangers are classified on the basis of number of passes on each side and the flow arrangement in each channel, taking into account the end plate effects. This results in four configurations each for the 1–1 (1 Pass–1 Pass), 2–1, 2–2, 3–3, 4–1, 4–2, and 4–4 arrangements, and six configurations for the 3–1 arrangement. These arrangements are analyzed using the Gauss–Seidel iterative finite difference method; the plate arrangement that yields the highest effectiveness in each pass configuration is identified. Comprehensive results are presented in tabular form for the temperature effectiveness P1 and log-mean temperature difference correction factor F as functions of the number of transfer units NTU1 , the heat capacity rate ratio R1 , and the total number of thermal plates. On the basis of these results, specific guidelines are outlined for the selection of appropriate plate heat exchanger configurations.

Copyright © 1989 by ASME
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