Self-propelled sweeping removal of dropwise condensate
نویسندگان
چکیده
Xiaopeng Qu, Jonathan B. Boreyko, Fangjie Liu, Rebecca L. Agapov, Nickolay V. Lavrik, Scott T. Retterer, James J. Feng, C. Patrick Collier, and Chuan-Hua Chen Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA Bredesen Center for Interdisciplinary Research, University of Tennessee, Knoxville, Tennessee 37996, USA Department of Mathematics, University of British Columbia, Vancouver, British Columbia V6T 1Z2, Canada Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
منابع مشابه
Self-propelled dropwise condensate on superhydrophobic surfaces.
In conventional dropwise condensation on a hydrophobic surface, the condensate drops must be removed by external forces for continuous operation. This Letter reports continuous dropwise condensation spontaneously occurring on a superhydrophobic surface without any external forces. The spontaneous drop removal results from the surface energy released upon drop coalescence, which leads to a surpr...
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Self-propelled jumping drops are continuously removed from a condensing superhydrophobic surface to enable a micrometric steady-state drop size. Here, we report that subcooled condensate on a chilled superhydrophobic surface are able to repeatedly jump off the surface before heterogeneous ice nucleation occurs. Frost still forms on the superhydrophobic surface due to ice nucleation at neighbori...
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The self-cleaning function of superhydrophobic surfaces is conventionally attributed to the removal of contaminating particles by impacting or rolling water droplets, which implies the action of external forces such as gravity. Here, we demonstrate a unique self-cleaning mechanism whereby the contaminated superhydrophobic surface is exposed to condensing water vapor, and the contaminants are au...
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Dropwise condensation processes, where condensation occurs through small droplets on a solid surface, has been demonstrated to significantly improve heat transfer rates in comparison to film-wise condensation (where a whole surface is covered by a thin film of liquid). Dropwise condensation usually takes place on superhydrophobic surfaces, and one of the main engineering and scientific challeng...
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