Hydrophobic copper nanowires for enhancing condensation heat transfer

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	Hydrophobic copper nanowires for enhancing condensation heat transfer
	Zhao, Dongliang; Wen, Rongfu; Li, Qian; Wu, Jiafeng; Wu, Gensheng; Wang, Wei; Chen, Yunfei; Ma, Xuehu; Yang, Ronggui
刊名	NANO ENERGY
	2017
卷号	33 页码:177-183
ISSN号	2211-2855
英文摘要	Rapid droplet removal by regulating surface topology and wettability has been exploited in nature and it is of great importance for a broad range of technological applications including water desalination and harvesting, power generation, environmental control, and thermal management. Recently there have been tremendous efforts in developing nanostructured surfaces for wettability control and enhancing phase-change heat transfer. However, the tendency of condensed droplets to form as pinned state rather than mobile mode on the nanostructured surfaces is likely to limit the applicability of such functionalized surfaces for condensation heat transfer enhancement. Here, we demonstrate enhanced condensation heat transfer on a nanowired hydrophobic copper surface where molecular permeation of water vapor into the separations between nanowires is greatly decreased, rendering spatial control on droplet nucleation and wetting dynamics. We show experimentally and theoretically that this novel strategy allows to achieve a 100% higher overall heat flux over a broadened surface subcooling range, up to 24 K, due to highly efficient droplet jumping compared to the state-of-the-art hydrophobic surfaces. These findings reveal that the droplet behaviors and condensation modes can be regulated by spatially controlling the droplet nucleation events on the nanowired surfaces, which paves the way for the design of nanostructured surfaces for enhanced phase-change heat transfer.
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/13949]
专题	2017专题
推荐引用方式 GB/T 7714	Zhao, Dongliang,Wen, Rongfu,Li, Qian,et al. Hydrophobic copper nanowires for enhancing condensation heat transfer[J]. NANO ENERGY,2017,33:177-183.
APA	Zhao, Dongliang.,Wen, Rongfu.,Li, Qian.,Wu, Jiafeng.,Wu, Gensheng.,...&Yang, Ronggui.(2017).Hydrophobic copper nanowires for enhancing condensation heat transfer.NANO ENERGY,33,177-183.
MLA	Zhao, Dongliang,et al."Hydrophobic copper nanowires for enhancing condensation heat transfer".NANO ENERGY 33(2017):177-183.