Transient thermodynamic behavior of cryogenic mixed fluid thermosiphon and its cool-down time estimation

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dc.contributor.authorLee, Ji-Sungko
dc.contributor.authorKim, Young-Kwonko
dc.contributor.authorJeong, Sang-Kwonko
dc.date.accessioned2013-03-11T19:59:51Z-
dc.date.available2013-03-11T19:59:51Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2010-05-
dc.identifier.citationCRYOGENICS, v.50, pp.352 - 358-
dc.identifier.issn0011-2275-
dc.identifier.urihttp://hdl.handle.net/10203/100117-
dc.description.abstractThermosiphon is an efficient heat transfer device by utilizing latent heat of fluid at liquid vapor phase change. One of the disadvantages of thermosiphon, however, is that the operational temperature range is fundamentally limited from the critical point to the triple point of the working fluid to maintain two phase state Nitrogen (N(2)) and tetrafluoromethane (CF(4)) were selected as the mixed working fluid to widen their original operational temperature range. Thermodynamic behavior of mixture and its effect on the cool-down time were investigated A simple calculation model was proposed to estimate the cool-down time of the thermosiphon evaporator prior to experiments The calculated results agreed well with the experimental results within 5% error The cool-down time reduction was not achieved by mixing two components at once due to the separation of mixture. One idea to avoid this problem was suggested in this paper where the estimated cool-down time was reduced 17 8% compared to pure N(2) Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.-
dc.languageEnglish-
dc.publisherELSEVIER SCI LTD-
dc.titleTransient thermodynamic behavior of cryogenic mixed fluid thermosiphon and its cool-down time estimation-
dc.typeArticle-
dc.identifier.wosid000277954300009-
dc.identifier.scopusid2-s2.0-77950627910-
dc.type.rimsART-
dc.citation.volume50-
dc.citation.beginningpage352-
dc.citation.endingpage358-
dc.citation.publicationnameCRYOGENICS-
dc.identifier.doi10.1016/j.cryogenics.2010.02.001-
dc.contributor.localauthorJeong, Sang-Kwon-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorGas mixture-
dc.subject.keywordAuthorNitrogen-
dc.subject.keywordAuthorHeat transfer-
dc.subject.keywordAuthorPhase transitions-
dc.subject.keywordAuthorThermodynamics-
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