气候变化领域集成服务门户(CCPortal): Few-layer graphene on nickel enabled sustainable dropwise condensation

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DOI	10.1016/j.scib.2021.06.006
	Few-layer graphene on nickel enabled sustainable dropwise condensation
	Chang W.; Peng B.; Egab K.; Zhang Y.; Cheng Y.; Li X.; Ma X.; Li C.
发表日期	2021
ISSN	20959273
英文摘要	Condensation is critical for a wide range of applications such as electrical power generation, distillation, natural gas processing, dehumidification and water harvest, and thermal management. Compared with “filmwise” mode of condensation (FWC) prevailing in industrial-scale systems, dropwise condensation (DWC) can provide an order of magnitude higher heat transfer rate owing to drastically reduced thermal resistance from the formation of discrete and mobile droplets. In the past, promoting DWC by controlling surface wetting has attracted wide attention, but DWC highly relies on non-wetting surfaces and only lasts days under practical conditions due to the poor reliability of coatings. Here, we developed nanostructured graphene coatings on nickel (Ni) substrates that we can control and enhance the nucleation of water droplets on graphene grain boundaries. Surprisingly, this enables DWC even under normal “wetting” conditions. This is contradictory to the widely accepted DWC mechanism. Moreover, the Ni-graphene surface enables exceptional long-term condensation from days to more than 3 years under practical or even more aggressive testing environments. © 2021 Science China Press
关键词	Durable dropwise condensation Graphene Heat transfer Heterogeneous wettability
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207356
作者单位	Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208, United States; Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, VA 22904, United States; State Key Laboratory of Fine Chemicals, Liaoning Provincial Key Laboratory of Clean Utilization of Chemical Resources, Institute of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China; Naval Architecture and Ocean Engineering College, Dalian Maritime University, Dalian, 116026, China
推荐引用方式 GB/T 7714	Chang W.,Peng B.,Egab K.,et al. Few-layer graphene on nickel enabled sustainable dropwise condensation[J],2021.
APA	Chang W..,Peng B..,Egab K..,Zhang Y..,Cheng Y..,...&Li C..(2021).Few-layer graphene on nickel enabled sustainable dropwise condensation.Science Bulletin.
MLA	Chang W.,et al."Few-layer graphene on nickel enabled sustainable dropwise condensation".Science Bulletin (2021).