Small diameter fibres as new wick material for capillary-driven heat pipes

dc.contributor.authorDe Schampheleire, S.
dc.contributor.authorDe Kerpel, K.
dc.contributor.authorDeruyter, T.
dc.contributor.authorDe Paepe, M.
dc.date.accessioned2016-07-18T10:51:34Z
dc.date.available2016-07-18T10:51:34Z
dc.date.issued2015
dc.description.abstractPapers presented to the 11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 20-23 July 2015.en_ZA
dc.description.abstractHeat pipes with a wick material consisting of small diameter metal fibres of 12 μm are investigated. The container material is copper and the working fluid is water. The fibre mesh heat pipe is compared with two other wick structures: a screen mesh (145 meshes per inch) and a sintered powder wick. All three heat pipes have an outer diameter of 6 mm, a length of 200 mm. The heat pipes are tested in a vertical orientation, both gravity-opposed and gravity-assisted. In the gravity-opposed orientation the heat pipes are tested for a heat input up to 50 W and an operating temperature of 70°C. In the gravity-assisted orientation the heat pipes are tested up to 160 W and 120°C. The thermal resistance and the temperature difference between evaporator and condenser are used as performance indicators. For the gravity-assisted orientation, the screen mesh wick clearly outperforms the fibre and sintered powder wick, due to its higher permeability and better ability to distribute the working fluid over the circumference of the wick. For the gravity-opposed orientation, the fibre and screen mesh heat pipe perform equally well. Both have a lower thermal resistance than the sintered powder heat pipe, as the small diameter fibres and fine mesh create more and very small capillary channels in comparison with the sintered powder wick.en_ZA
dc.description.librarianam2016en_ZA
dc.format.mediumPDFen_ZA
dc.identifier.citationDe Schampheleire, S, De Kerpel, K, Deruyter, T & De Paepe, M 2015, 'Small diameter fibres as new wick material for capillary-driven heat pipes', Paper presented to the 11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 20-23 July 2015.en_ZA
dc.identifier.isbn97817759206873
dc.identifier.urihttp://hdl.handle.net/2263/55888
dc.language.isoenen_ZA
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_ZA
dc.rights© 2015 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.subjectHeat pipesen_ZA
dc.subjectWick materialen_ZA
dc.subjectDiameteren_ZA
dc.subjectTemperatureen_ZA
dc.titleSmall diameter fibres as new wick material for capillary-driven heat pipesen_ZA
dc.typePresentationen_ZA

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