Kamsanam, W, Mao, X and Jaworski, AJ (2016) Thermal performance of finned-tube thermoacoustic heat exchangers in oscillatory flow conditions. International Journal of Thermal Sciences, 101. pp. 169-180. ISSN 1290-0729
Abstract
Heat exchangers play a key role in the overall performance of thermoacoustic devices. Due to the complex nature of oscillatory flows, the underlying mechanism of heat transfer in oscillatory flows is still not fully understood. This work investigates the effect of fin length and fin spacing on the thermal performance of finned-tube heat exchangers. The heat transfer rate between two finned-tube heat exchangers arranged side-by-side in an oscillatory flow was measured over a range of testing conditions. The results are presented in terms of heat transfer coefficient and heat transfer effectiveness. Comparisons are made between experimental results of this work and a number of models, such as, the Time-Average Steady-Flow Equivalent (TASFE) model, the Root Mean Square Reynolds Number (RMS-Re) model and the boundary layer conduction model, as well as several empirical correlations in literature. A new empirical correlation is proposed to be used for the prediction of thermal performance for finned-tube heat exchangers in oscillatory flows. The uncertainties associated with the measurement of heat flux are estimated.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Editors: |
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Copyright, Publisher and Additional Information: | © 2015 Elsevier Masson SAS. All rights reserved. This is an author produced version of a paper published in International Journal of Thermal Sciences. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | heat exchanger; oscillatory flow; thermoacoustics; thermal performance; Nusselt number; heat transfer effectiveness |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Energy Research Institute (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 18 Nov 2015 13:38 |
Last Modified: | 08 Dec 2016 02:29 |
Published Version: | http://dx.doi.org/10.1016/j.ijthermalsci.2015.10.0... |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.ijthermalsci.2015.10.032 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:91976 |