# Numerically-based parametric study of a compact fin-tube heat exchanger

 dc.contributor.author Cobian-Iniguez, J. dc.contributor.author Dugast, F. dc.contributor.author Pacheco-Vega, A. dc.date.accessioned 2015-04-23T06:44:37Z dc.date.available 2015-04-23T06:44:37Z dc.date.issued 2014 dc.description.abstract Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014. en_ZA dc.description.abstract This study presents a comprehensive numerical analysis of the convective heat transfer on the external side of a compact fintube heat exchanger. The aim is to study the influence of key geometric parameters on both fluid flow and heat transfer processes in order to design more compact devices. The parameters are: fin spacing, tube diameter and tube alignment; i.e., inline or staggered, for a set of typical operating conditions. The parametric analysis is established on a six-tube baseline heat exchanger model, where air flows over the tubes and water flows at high speed inside the tubes. The mathematical model of the convection process is comprised of the continuity, momentum and energy equations, in Cartesian coordinates, which is solved under specific flow and temperature values using the finite element method. From computed velocity, pressure and temperature fields, the values of heat rate and pressure drop are then calculated for a range of flow rates in the laminar regime. Results from this investigation indicate that tube diameter and fin spacing play a role in the amount of heat being exchanged and that, for a given device, the length needed to exchange 90% of the energy that could be achieved by the baseline model, is confined to less than 1/2 its actual size, and to exchange 98% of the associated thermal energy, less than 2/3 of its size is necessary. en_ZA dc.description.librarian cf2015 en_ZA dc.format.medium PDF en_ZA dc.identifier.citation Cobian-Iniguez, J, Dugast, F, Pacheco-Vega, A 2014, 'Numerically-based parametric study of a compact fin-tube heat exchanger', Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014. en_ZA dc.identifier.isbn 97817759206873 dc.identifier.uri http://hdl.handle.net/2263/44483 dc.publisher International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics en_ZA dc.rights © 2014 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. en_ZA dc.subject Heat exchanger en_ZA dc.subject Fin-tube en_ZA dc.subject Numerical analysis en_ZA dc.subject Convective heat transfer en_ZA dc.subject Fluid flow en_ZA dc.subject Finite element method. en_ZA dc.subject Thermal energy en_ZA dc.title Numerically-based parametric study of a compact fin-tube heat exchanger en_ZA dc.type Presentation en_ZA
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