A combination of the first and second laws of thermodynamics has been utilized in analyzing the performance of a double pipe heat exchanger with a porous medium attached over the inner pipe. The goal of this work is to find the best conditions that allow the lowest rate of entropy generation due to fluid friction and heat transfer with respect to the considered parameters. Results show that the minimization of the rate of entropy generation depends on the porous layer thickness, its permeability, the inlet temperature difference between the two fluids, and the effective thermal conductivity of the porous substrate. An increase in the effective thermal conductivity of the porous medium seems to be thermodynamically advantageous. Unexpectedly, the fully porous annular gap yields the best results in terms of the rate of total entropy generation.
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e-mail: salahchikh@yahoo.fr
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January 2006
Technical Papers
Second Law Analysis in a Partly Porous Double Pipe Heat Exchanger
Nadia Allouache,
Nadia Allouache
Universite des Sciences et de la Technologie Houari Boumediene
, B. P. 32, El Alia, Bab Ezzouar 16111, Algeria
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Salah Chikh
e-mail: salahchikh@yahoo.fr
Salah Chikh
Faculte de Genie Mecanique et Genie des Procedes
Universite des Sciences et de la Technologie Houari Boumediene
, B. P. 32, El Alia, Bab Ezzouar 16111, Algeria
Search for other works by this author on:
Nadia Allouache
Universite des Sciences et de la Technologie Houari Boumediene
, B. P. 32, El Alia, Bab Ezzouar 16111, Algeria
Salah Chikh
Faculte de Genie Mecanique et Genie des Procedes
Universite des Sciences et de la Technologie Houari Boumediene
, B. P. 32, El Alia, Bab Ezzouar 16111, Algeriae-mail: salahchikh@yahoo.fr
J. Appl. Mech. Jan 2006, 73(1): 60-65 (6 pages)
Published Online: April 27, 2005
Article history
Received:
June 22, 2004
Revised:
April 27, 2005
Citation
Allouache, N., and Chikh, S. (April 27, 2005). "Second Law Analysis in a Partly Porous Double Pipe Heat Exchanger." ASME. J. Appl. Mech. January 2006; 73(1): 60–65. https://doi.org/10.1115/1.1991865
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