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Nanoarray-Embedded Hierarchical Hydrophobic Surfaces for Enhancing Durable Dropwise Condensation
Yue Hu1, Lu-Wen Zhang1,*
1 Department of Engineering Mechanics, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong
University, Shanghai, 200240, China
* Corresponding Author: Lu-Wen Zhang. Email:
The International Conference on Computational & Experimental Engineering and Sciences 2023, 26(1), 1-1. https://doi.org/10.32604/icces.2023.010595
Abstract
Liquid accretion control plays a key role across a wide range of industrial applications, such as anti-icing,
power generation, sewage treatment, water desalination, and energy harvesting. In condensation system,
durable dropwise condensation of saturated vapor for heat transfer and energy saving in extensive
industrial applications. While numerous superhydrophobic surfaces can promote steam condensation,
maintaining discrete microdroplets on surfaces without the formation of a flooded filmwise condensation
at high subcooling remains challenging. Here, we report the development of carbon nanotube arrayembedded hierarchical composite surfaces that enable ultra-durable dropwise condensation under a wide
range of subcooling temperatures (∆
Tsub = 8 K–38 K), which outperforms existing nanowire surfaces. This
performance stems from the combined strategies of the hydrophobic nanostructures that allow efficient
surface renewal and the patterned hydrophilic micro frames that protect the nanostructures and also
accelerate droplet nucleation. The synergistic effects of the composite design ensure sustained Cassie
wetting mode and capillarity-governed droplet mobility (Bond number < 0.055) as well as the large specific
volume of condensed droplets, which contributes to the enhanced condensation heat transfer. Our design
provides a feasible alternative for efficiently transferring heat in a vapor environment with relatively high
temperatures through the tunable multiscale morphology.
Cite This Article
APA Style
Hu, Y., Zhang, L. (2023). Nanoarray-embedded hierarchical hydrophobic surfaces for enhancing durable dropwise condensation. The International Conference on Computational & Experimental Engineering and Sciences, 26(1), 1-1. https://doi.org/10.32604/icces.2023.010595
Vancouver Style
Hu Y, Zhang L. Nanoarray-embedded hierarchical hydrophobic surfaces for enhancing durable dropwise condensation. Int Conf Comput Exp Eng Sciences . 2023;26(1):1-1 https://doi.org/10.32604/icces.2023.010595
IEEE Style
Y. Hu and L. Zhang, "Nanoarray-Embedded Hierarchical Hydrophobic Surfaces for Enhancing Durable Dropwise Condensation," Int. Conf. Comput. Exp. Eng. Sciences , vol. 26, no. 1, pp. 1-1. 2023. https://doi.org/10.32604/icces.2023.010595