Journal Article10.1063/1.2731434
Dropwise condensation on superhydrophobic surfaces with two-tier roughness
TL;DR: In this paper, the authors reported continuous dropwise condensation on a superhydrophobic surface with short carbon nanotubes deposited on micromachined posts, a two-tier texture mimicking lotus leaves.
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Abstract: Dropwise condensation can enhance heat transfer by an order of magnitude compared to film condensation. Superhydrophobicity appears ideal to promote continued dropwise condensation which requires rapid removal of condensate drops; however, such promotion has not been reported on engineered surfaces. This letter reports continuous dropwise condensation on a superhydrophobic surface with short carbon nanotubes deposited on micromachined posts, a two-tier texture mimicking lotus leaves. On such micro-/nanostructured surfaces, the condensate drops prefer the Cassie state which is thermodynamically more stable than the Wenzel state. With a hexadecanethiol coating, superhydrophobicity is retained during and after condensation and rapid drop removal is enabled.
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Citations
Influence of different parameters of preparing self-assembled monolayers on copper surfaces in the dropwise condensation heat transfer: an experimental study
TL;DR: In this article, the effects of concentration and immersing time of self-assembled monolayers coatings on dropwise condensation (DWC) were investigated and a proper apparatus for DWC experiments was designed and fabricated.
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•Dissertation
Développement de procédés de nanostructuration sur films de polymères flexibles
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- 09 Oct 2017
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TL;DR: In this paper, the effect of ultrasonic power on condensate distribution characteristics on a vertical metal surface was studied, where the surface was made of aluminum and coated with PVC film.
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Thermal Performance Improvement of a Cylindrical Thermosyphon with Modified Wettability on both Evaporator and Condenser Sections
Chin-Chi Hsu,Da-Chi Yang,Tsung-Wen Su,Long-Sheng Kuo,Ping-Hei Chen +4 more
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Kenneth K. S. Lau,José Bico,Kenneth B. K. Teo,Manish Chhowalla,Gehan A. J. Amaratunga,William I. Milne,Gareth H. McKinley,Karen K. Gleason +7 more
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