| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Observation of Nucleate Boiling on a Fine Copper Wire with Superhydrophobic Micropatterns |
| WANG Xin-Wei1, SONG Yong-Xin2, WANG Hao1** |
1Beijing Key Laboratory for Solid Waste Utilization and Management, College of Engineering University, Peking University, Beijing 100871
2Department of Marine Engineering, Dalian Maritime University, Dalian 116026
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| Cite this article: |
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WANG Xin-Wei, SONG Yong-Xin, WANG Hao 2012 Chin. Phys. Lett. 29 114702 |
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Abstract Hydrophobic islands/patterns on a hydrophilic substrate could be employed to enhance boiling heat transfer, however the underlying mechanisms are far from clear. We perform boiling experiments on a copper wire coated with superhydrophobic micropatterns (contact angle >170°). The copper wire is as fine as 150 μm in diameter, greatly facilitating the observation of the bubble dynamic details. With the heat flux increasing, four regimes are characterized based on the bubble behavior. The superhydrophobic micropatterns are found to play critical roles in bubble formation and distribution as well as the interactions.
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Received: 16 July 2012
Published: 28 November 2012
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