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RESEARCH PAPERS

Differences Between Second Law Analysis and Pinch Technology

[+] Author and Article Information
D. A. Sama

University of Massachusetts Lowell, Lowell, MA 01854

J. Energy Resour. Technol 117(3), 186-191 (Sep 01, 1995) (6 pages) doi:10.1115/1.2835339 History: Received April 26, 1994; Revised March 25, 1995; Online January 22, 2008

Abstract

The use of second law analysis to design a heat exchanger network is compared with the pinch technology approach. Differences between the two methods are identified and discussed in the light of claims made by practitioners of pinch technology. Second law insights are used to easily identify and correct design errors in a heat exchanger network, and to design maximum energy recovery networks. More importantly, it is found that use of the second law provides an understanding of the process which is totally absent in the pinch technology approach. The claims that pinch technology can find global optimum solutions, that only pinch technology can find maximum energy recovery heat exchanger networks, and that pinch technology is a form of second law analysis, are considered, discussed, and shown to be invalid.

Copyright © 1995 by The American Society of Mechanical Engineers
Topics: Pinch effect
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