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dc.contributor.authorLu, Ming-Changen_US
dc.contributor.authorLin, Chien-Changen_US
dc.contributor.authorLo, Ching-Wenen_US
dc.contributor.authorHuang, Cheng-Weien_US
dc.contributor.authorWang, Chi-Chuanen_US
dc.date.accessioned2018-08-21T05:54:13Z-
dc.date.available2018-08-21T05:54:13Z-
dc.date.issued2017-08-01en_US
dc.identifier.issn0017-9310en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.ijheatmasstransfer.2017.04.021en_US
dc.identifier.urihttp://hdl.handle.net/11536/145687-
dc.description.abstractCondensation is an essential process in various industrial systems. Enhancing condensation by employing superhydrophobic (SHB) surfaces had drawn significant attention in recent years because of the emerging technology for surface engineering. However, the efficacy of SHB surfaces in condensation is controversy in the literature. The observed deteriorated heat transfer on SHB in condensation is presumably a result of highly pinned Wenzel droplets or flooding formed on the SHB surfaces. Si nanowire (SiNW) array-coated surface which can simultaneously provide a large number of nucleation sites and prevent condensate from penetrating into the nano-structure is a promising candidate for enhancing condensation. In this work, heat transfer on the SHB SiNW surface was investigated. At low subcooling, jumping of liquid droplets accompanied with a high droplet departure frequency resulted in a large heat transfer coefficient (HTC) of 88 16 kW/m(2) K on the SHB surface. This value is one of the highest reported condensation HTCs in the literature. It was 155% and 87% higher than those on the plain hydrophilic and hydrophobic surfaces, respectively. Heat transfer decreased with the rise of subcooling due to an increased condensate surface coverage ratio. However, condensate can still be rapidly shed away from the SHB SiNW surface at high subcooling, which render the comparatively larger HTC of 18.6 2 kW/m(2) K on the SHB SiNW surface as opposed to plain hydrophobic and hydrophilic surfaces. It was evidenced that SHB surface could have a superior heat and mass transfer performance than hydrophobic surface provided that the liquid droplets on the SHB could be shed away efficiently. (C) 2017 Elsevier Ltd. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectCondensationen_US
dc.subjectHeat transferen_US
dc.subjectSuperhydrophobic surfaceen_US
dc.subjectSilicon nanowiresen_US
dc.titleSuperhydrophobic Si nanowires for enhanced condensation heat transferen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.ijheatmasstransfer.2017.04.021en_US
dc.identifier.journalINTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFERen_US
dc.citation.volume111en_US
dc.citation.spage614en_US
dc.citation.epage623en_US
dc.contributor.department機械工程學系zh_TW
dc.contributor.departmentDepartment of Mechanical Engineeringen_US
dc.identifier.wosnumberWOS:000404092900055en_US
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