DC Field | Value | Language |
---|---|---|
dc.contributor.author | Byon, Chan | ko |
dc.contributor.author | Kim, Sung-Jin | ko |
dc.date.accessioned | 2013-03-12T15:58:19Z | - |
dc.date.available | 2013-03-12T15:58:19Z | - |
dc.date.created | 2012-07-04 | - |
dc.date.created | 2012-07-04 | - |
dc.date.issued | 2012-07 | - |
dc.identifier.citation | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, v.55, no.15-16, pp.4096 - 4103 | - |
dc.identifier.issn | 0017-9310 | - |
dc.identifier.uri | http://hdl.handle.net/10203/102798 | - |
dc.description.abstract | The capillary performance (K/R-eff) of the wick is a key design parameter for the thermal performance of heat pipes. In this study, the capillary performance of a bi-porous wick is investigated experimentally and analytically. The effects of particle size (40 <= d <= 600 mu m) and cluster size (250 <= D <= 1440 mu m) on the capillary performance are investigated. The capillary flows in the wicks are visualized using sintered glass powder wicks and a high speed camera. From the experiments, it is shown that the capillary performances of bi-porous wicks are significantly higher than those of mono-porous wicks. The capillary performance of 125/675 mu m bi-porous wick is 11 times larger than that of a 125 mu m mono-porous wick. In the bi-porous wick, three distinct capillary flow regimes are observed, depending on the ratio between particle and cluster sizes (d/D). A semi-analytic model for predicting the capillary performance of bi-porous wicks is developed for each regime. The model prediction shows excellent agreement with experimental results and indicates that the cluster size should be 4-6 times larger than the particle size for an optimal capillary performance. The effect of the contact angle on the capillary performance of bi-porous wicks is shown to be negligible. (C) 2012 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | BIPOROUS WICKS | - |
dc.subject | HEAT PIPES | - |
dc.subject | PERMEABILITY | - |
dc.subject | EVAPORATION | - |
dc.subject | FLOW | - |
dc.title | Capillary performance of bi-porous sintered metal wicks | - |
dc.type | Article | - |
dc.identifier.wosid | 000305367500021 | - |
dc.identifier.scopusid | 2-s2.0-84861531930 | - |
dc.type.rims | ART | - |
dc.citation.volume | 55 | - |
dc.citation.issue | 15-16 | - |
dc.citation.beginningpage | 4096 | - |
dc.citation.endingpage | 4103 | - |
dc.citation.publicationname | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | - |
dc.identifier.doi | 10.1016/j.ijheatmasstransfer.2012.03.051 | - |
dc.contributor.localauthor | Kim, Sung-Jin | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Bi-porous wick | - |
dc.subject.keywordAuthor | Capillary performance | - |
dc.subject.keywordPlus | BIPOROUS WICKS | - |
dc.subject.keywordPlus | HEAT PIPES | - |
dc.subject.keywordPlus | PERMEABILITY | - |
dc.subject.keywordPlus | EVAPORATION | - |
dc.subject.keywordPlus | FLOW | - |
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