DOI: 10.1016/j.scib.2021.06.006
论文题名: Few-layer graphene on nickel enabled sustainable dropwise condensation
作者: Chang W. ; Peng B. ; Egab K. ; Zhang Y. ; Cheng Y. ; Li X. ; Ma X. ; Li C.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
语种: 英语
中文关键词: Durable dropwise condensation
; Graphene
; Heat transfer
; Heterogeneous wettability
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 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170204
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Chang W.,Peng B.,Egab K.,et al. Few-layer graphene on nickel enabled sustainable dropwise condensation[J]. Science Bulletin,2021-01-01