Heat transfer coefficients in concentric annuli

Meyer, Josua P.; Dirker, Jaco

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dc.contributor.upauthor	Meyer, Josua P.
dc.contributor.upauthor	Dirker, Jaco
dc.date.accessioned	2016-03-11T09:52:46Z
dc.date.available	2016-03-11T09:52:46Z
dc.date.created	2002
dc.date.issued	2002
dc.description.abstract	Paper presented to the 1st International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Kruger Park 8-10 April 2002.	en_ZA
dc.description.abstract	The geometric shape of a passage's cross-section has an effect on its convective heat transfer capabilities. For concentric annuli, as cross section, the diameter ratio of the annular space plays an important role. The purpose of this investigation was to find a correlation that will accurately predict heat transfer coefficients at the inner wall of smooth concentric annuli for the flow of water. Experiments were conducted on water under turbulent flow conditions for a wide range of diameter ratios. The Wilson plot method was used to determine the heat transfer coefficients from which a correlation was developed that could be used to predict the heat transfer coefficients. It was found that the correlation predicted Nusselt numbers accurately within 3% of measured values for diameter ratios between a= 1.7 and a= 5.1 and a Reynolds numbers range of 4 000 to 30 000.	en_ZA
dc.description.librarian	tm2015	en_ZA
dc.format.extent	6 Pages	en_ZA
dc.format.medium	PDF	en_ZA
dc.identifier.citation	Dirker, J & Meyer, JP 2002, 'Heat transfer coefficients in concentric annuli', 1st International Conference on Heat Transfer, Fluid Mechanics, and Thermodynamics 8-10 April 2002, Kruger Park, South Africa	en_ZA
dc.identifier.issn	0-86970-536·9
dc.identifier.uri	http://hdl.handle.net/2263/51802
dc.language.iso	en	en_ZA
dc.publisher	Heat Transfer, Fluid Mechanics and Thermodynamics	en_ZA
dc.rights	© HEFAT 2002 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means: electronic, electrostatic. magnetic tape, mechanical, photocopying or otherwise, without permission in writing of the copyright owner.	en_ZA
dc.subject	Heat transfer	en_ZA
dc.title	Heat transfer coefficients in concentric annuli	en_ZA
dc.type	Article	en_ZA