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Entropy 2013, 15(2), 474-489; doi:10.3390/e15020474

A New Simple Method for Estimating Exergy Destruction in Heat Exchangers

Energy and Fluid Mechanics Department (ETSII), Universidad Politécnica de Madrid, José Gutiérrez Abascal 2, 28006 Madrid, Spain
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Received: 3 December 2012 / Revised: 11 January 2013 / Accepted: 22 January 2013 / Published: 28 January 2013
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Abstract

This paper presents an abbreviated method for estimating exergy destruction in a heat exchanger, requiring only black-box data of the exchanger’s inputs and outputs, and eliminating part of the mathematical difficulties associated with the calculations. A well-known model for temperature distributions in an exchanger is adapted for this case, and is used to distinguish between the contributions of the three major causes of the total exergetic loss: heat transfer, fluid friction and energy dissipation to the surroundings. This provides insight into the relative importance of the three, allowing for identification of potential improvements to a given design. View Full-Text
Keywords: irreversibility; second law analysis; heat exchanger; thermodynamics; heat transfer irreversibility; second law analysis; heat exchanger; thermodynamics; heat transfer
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

López Paniagua, I.; Rodríguez Martín, J.; González Fernandez, C.; Jiménez Alvaro, Á.; Nieto Carlier, R. A New Simple Method for Estimating Exergy Destruction in Heat Exchangers. Entropy 2013, 15, 474-489.

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