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Fast mass transport-assisted convective heat transfer through a multi-walled carbon nanotube array

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dc.contributor.authorWonjae Jeon-
dc.contributor.authorTaehun Kim-
dc.contributor.authorSung-Min Kim-
dc.contributor.authorSeunghyun Baik-
dc.date.available2019-05-02T08:10:23Z-
dc.date.created2019-01-24-
dc.date.issued2018-12-
dc.identifier.issn2040-3364-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/5771-
dc.description.abstractThe recently reported fast mass transport through nanochannels provides a unique opportunity to explore nanoscale energy transport. Here we experimentally investigated the convective heat transport of air through vertically aligned multi-walled carbon nanotubes (VAMWNTs). The flow through the unit cell, defined as an interstitial space among four adjacent nanotubes (hydraulic diameter = 84.9 nm), was in the transition (0.62 Knudsen number 0.78) and creeping flow (3.83 x 10(-5) Reynolds number (Re) 1.55 x 10(-4)) regime. The constant heat flux (0.102 or 0.286 W m(-2)) was supplied by a single-mode microwave (2.45 GHz) instantly heating the VAMWNTs. The volume flow rate was two orders of magnitude greater than the Hagen-Poiseuille theory value. The experimentally determined convective heat transfer coefficient (h, 3.70 x 10(-4)-4.01 x 10(-3) W m(-2) K-1) and Nusselt number (Nu, 1.17 x 10(-9)-1.26 x 10(-8)) were small partly due to the small Re. A further increase in Re (2.12 x 10(-3)) with the support of a polytetrafluoroethylene mesh significantly increased h (5.48 x 10(-2) W m(-2) K-1) and Nu (2.37 x 10(-7)). A large number of nanochannels in a given cross-section of heat sinks may enhance the heat dissipation significantly. © The Royal Society of Chemistry 2018-
dc.description.uri1-
dc.language영어-
dc.publisherROYAL SOC CHEMISTRY-
dc.titleFast mass transport-assisted convective heat transfer through a multi-walled carbon nanotube array-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000453248100040-
dc.identifier.scopusid2-s2.0-85058479397-
dc.identifier.rimsid66742-
dc.contributor.affiliatedAuthorSeunghyun Baik-
dc.identifier.doi10.1039/c8nr07529h-
dc.identifier.bibliographicCitationNANOSCALE, v.10, no.48, pp.23103 - 23112-
dc.citation.titleNANOSCALE-
dc.citation.volume10-
dc.citation.number48-
dc.citation.startPage23103-
dc.citation.endPage23112-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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