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Journal of Enhanced Heat Transfer
Fator do impacto: 0.562 FI de cinco anos: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN Imprimir: 1065-5131
ISSN On-line: 1026-5511

Volumes:
Volume 27, 2020 Volume 26, 2019 Volume 25, 2018 Volume 24, 2017 Volume 23, 2016 Volume 22, 2015 Volume 21, 2014 Volume 20, 2013 Volume 19, 2012 Volume 18, 2011 Volume 17, 2010 Volume 16, 2009 Volume 15, 2008 Volume 14, 2007 Volume 13, 2006 Volume 12, 2005 Volume 11, 2004 Volume 10, 2003 Volume 9, 2002 Volume 8, 2001 Volume 7, 2000 Volume 6, 1999 Volume 5, 1998 Volume 4, 1997 Volume 3, 1996 Volume 2, 1995 Volume 1, 1994

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v8.i6.50
pages 411-420

A Thermal Model for Calculation of Heat Transfer Enhancement by Porous Metal Inserts

Arsalan Razani
Department of Mechanical Engineering, The University of New Mexico, Albuquerque, NM87131, USA
J. W. Paquette
Department of Mechanical Engineering, The University of New Mexico, Albuquerque, New Mexico, USA
B. Montoya
Department of Mechanical Engineering, The University of New Mexico, Albuquerque, New Mexico, USA
K. J. Kim
Department of Mechanical Engineering, University of Nevada/Reno

RESUMO

A thermal model for calculation of heat transfer enhancement by porous metal inserts is developed. In the model, the complexity of porous metal insert is replaced by an equivalent cubic lattice composed of cylindrical ligaments where its length and diameter is obtained from the porosity and specific surface area of the porous insert. The cubic lattice is modeled as a composite fin to calculate the enhancement factor for the porous insert. The effect of contact resistance between the wall and porous insert on heat transfer enhancement is evaluated. The model is used to determine and optimize the rate of heat transfer per unit mass of a porous metal insert heat exchanger. Heat transfer enhancement factor is given in terms of dimensionless parameters convenient for parametric studies and design analysis.


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