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    Nanocapillarity in Graphene Oxide Laminate and Its Effect on Critical Heat Flux

    Source: Journal of Heat Transfer:;2017:;volume( 139 ):;issue: 008::page 82402
    Author:
    Kim, Ji Min
    ,
    Kim, Ji Hoon
    ,
    Kim, Moo Hwan
    ,
    Kaviany, Massoud
    ,
    Ahn, Ho Seon
    DOI: 10.1115/1.4036282
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The nanocapillarity phenomenon involves ultralow frictional flow of water molecules through nanoscale channels, and here we study this using exceptionally large number of nanochannels within graphene oxide (GO) laminates. The nanoconfined water molecules in GO nanochannels form square lattice (as in the ice bilayer), which melts and jumps across the channels, similar to slip flow, with mean speed of the order of 1 m/s. This ease of liquid spreading in GO laminate is used to delay the critical heat flux (CHF) phenomenon in water pool boiling, by preventing formation/growth of dry spots. The water nanocapillarity speed is derived based on the measured water penetration flux, and the CHF enhancement (up to 140%) is demonstrated on a 1-μm-thick GO laminate. The GO laminate offers efficient surface modifications for increased transport efficiency (and safety margin) of pool boiling heat transfer systems.
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      Nanocapillarity in Graphene Oxide Laminate and Its Effect on Critical Heat Flux

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4234303
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    contributor authorKim, Ji Min
    contributor authorKim, Ji Hoon
    contributor authorKim, Moo Hwan
    contributor authorKaviany, Massoud
    contributor authorAhn, Ho Seon
    date accessioned2017-11-25T07:16:56Z
    date available2017-11-25T07:16:56Z
    date copyright2017/25/4
    date issued2017
    identifier issn0022-1481
    identifier otherht_139_08_082402.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4234303
    description abstractThe nanocapillarity phenomenon involves ultralow frictional flow of water molecules through nanoscale channels, and here we study this using exceptionally large number of nanochannels within graphene oxide (GO) laminates. The nanoconfined water molecules in GO nanochannels form square lattice (as in the ice bilayer), which melts and jumps across the channels, similar to slip flow, with mean speed of the order of 1 m/s. This ease of liquid spreading in GO laminate is used to delay the critical heat flux (CHF) phenomenon in water pool boiling, by preventing formation/growth of dry spots. The water nanocapillarity speed is derived based on the measured water penetration flux, and the CHF enhancement (up to 140%) is demonstrated on a 1-μm-thick GO laminate. The GO laminate offers efficient surface modifications for increased transport efficiency (and safety margin) of pool boiling heat transfer systems.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleNanocapillarity in Graphene Oxide Laminate and Its Effect on Critical Heat Flux
    typeJournal Paper
    journal volume139
    journal issue8
    journal titleJournal of Heat Transfer
    identifier doi10.1115/1.4036282
    journal fristpage82402
    journal lastpage082402-9
    treeJournal of Heat Transfer:;2017:;volume( 139 ):;issue: 008
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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