Fabrication and experimental evaluation of a polymer-based flexible pulsating heat pipe

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dc.contributor.authorLim, Jonghyunko
dc.contributor.authorKim, Sung-Jinko
dc.date.accessioned2018-01-30T02:39:36Z-
dc.date.available2018-01-30T02:39:36Z-
dc.date.created2017-12-29-
dc.date.created2017-12-29-
dc.date.issued2018-01-
dc.identifier.citationENERGY CONVERSION AND MANAGEMENT, v.156, no.15, pp.358 - 364-
dc.identifier.issn0196-8904-
dc.identifier.urihttp://hdl.handle.net/10203/238155-
dc.description.abstractA polymer-based flexible pulsating heat pipe (FPHP) as a flexible heat spreader was developed, and a series of experiments were conducted to evaluate the thermal performance and the long-term reliability of the FPHP. The FPHP consisted of a multilayer laminated film and a low-density polyethylene (LDPE) sheet. HFE-7000 was used as the working fluid, and the width, length, and thickness of the FPHP were 53.4 mm, 85.5 mm, and 1 mm, respectively. To minimize the permeation of non-condensable gases (NCGs) in a lateral direction, the heat-sealed flanges were covered with the indium coating. Owing to the indium-coated flanges, the long-term reliability of the FPHP drastically increased. The lifetime of the FPHP was defined to evaluate the long-term reliability. The FPHP had a lifetime of 18.2 days in the acceleration test environment, which was equivalent to 306 days in a standard atmosphere and 17 times longer than the previous polymer-based PHP. The FPHP had the thermal resistance of 2.41 K/W, which is 37% lower than that of the copper reference sample in a vertical orientation. Under bending conditions as well as in a horizontal orientation, the FPHP still operated well as a PHP, but the thermal resistance increased slightly. The fabrication method of the FPHP is effective in minimizing the permeation of NCGs in a lateral direction and can pave the way for fabricating a thin flexible heat spreader that has high flexibility, high thermal performance, and long-term reliability.-
dc.languageEnglish-
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD-
dc.subjectNON-CONDENSABLE GAS-
dc.subjectPERFORMANCE-
dc.subjectPART-
dc.subjectOSCILLATION-
dc.subjectDESIGN-
dc.titleFabrication and experimental evaluation of a polymer-based flexible pulsating heat pipe-
dc.typeArticle-
dc.identifier.wosid000424310100030-
dc.identifier.scopusid2-s2.0-85034024198-
dc.type.rimsART-
dc.citation.volume156-
dc.citation.issue15-
dc.citation.beginningpage358-
dc.citation.endingpage364-
dc.citation.publicationnameENERGY CONVERSION AND MANAGEMENT-
dc.identifier.doi10.1016/j.enconman.2017.11.022-
dc.contributor.localauthorKim, Sung-Jin-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorPulsating heat pipe-
dc.subject.keywordAuthorPolymer-
dc.subject.keywordAuthorFlexible heat spreader-
dc.subject.keywordAuthorLong-term reliability-
dc.subject.keywordPlusNON-CONDENSABLE GAS-
dc.subject.keywordPlusPERFORMANCE-
dc.subject.keywordPlusPART-
dc.subject.keywordPlusOSCILLATION-
dc.subject.keywordPlusDESIGN-
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