Moist air condensation heat transfer enhancement via superhydrophobicity

Wu, Yu-Chin; Zheng, Jiawei; Muneeshwaran, M.; Yang, Kai-Shing; Wang, Chi-Chuan

doi:10.1016/j.ijheatmasstransfer.2021.121973

Cited by 20 publications

(2 citation statements)

References 30 publications

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“…The heat transfer coefficient on these three surfaces is shown in Figure 29 d, and the biggest heat transfer coefficient is accessed on the 3D nanowire networks surface, which is 100% higher than that of on a plain hydrophobic surface. The characteristics of moist air condensation on hydrophilic and superhydrophobic surfaces were experimentally researched by Wu et al [ 128 ]. Condensate droplet departure on hydrophilic surfaces is mainly driven by gravity, whereas on superhydrophobic surfaces, it is principally due to spontaneous droplet jumping off.…”

Section: Condensation Heat Transfer On Superhydrophobic Surfacesmentioning

confidence: 99%

A Review of Recent Advances in Superhydrophobic Surfaces and Their Applications in Drag Reduction and Heat Transfer

Zhang

Yang

et al. 2021

Nanomaterials

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Inspired by the superhydrophobic properties of some plants and animals with special structures, such as self-cleaning, water repellent, and drag reduction, the research on the basic theory and practical applications of superhydrophobic surfaces is increasing. In this paper, the characteristics of superhydrophobic surfaces and the preparation methods of superhydrophobic surfaces are briefly reviewed. The mechanisms of drag reduction on superhydrophobic surfaces and the effects of parameters such as flow rate, fluid viscosity, wettability, and surface morphology on drag reduction are discussed, as well as the applications of superhydrophobic surfaces in boiling heat transfer and condensation heat transfer. Finally, the limitations of adapting superhydrophobic surfaces to industrial applications are discussed. The possibility of applying superhydrophobic surfaces to highly viscous fluids for heat transfer to reduce flow resistance and improve heat transfer efficiency is introduced as a topic for further research in the future.

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Section: Condensation Heat Transfer On Superhydrophobic Surfacesmentioning

confidence: 99%

A Review of Recent Advances in Superhydrophobic Surfaces and Their Applications in Drag Reduction and Heat Transfer

Zhang

Yang

et al. 2021

Nanomaterials

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“…Directional liquid transport is of vital importance in both of scientific researches and practical applications, such as microfluidics, − enhanced heat transfer, , fog/water delivery and collection, − and water/oil separation. − To achieve spontaneous, directional, and long-distance liquid transport, great efforts have been devoted, e.g., magnetic control, , electric field guidance, − and reaction activation . However, most of these methods highly depend on external energy input, which are not favorable in modern society with energy shortage.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Underwater Superoleophilic Two-Dimensional Surface with Asymmetric Oleophobic Barriers for Unidirectional and Long-Distance Oil Transport

Guo

Liu

Guo

et al. 2023

ACS Appl. Mater. Interfaces

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Unidirectional and long-distance liquid transport is critically important to a range of practical applications, e.g., water harvesting, microfluidics, and chemical reactions. Great efforts have been made on liquid manipulation; most of which, however, are limited in the air environment. It is still a great challenge to achieve unidirectional and long-distance oil transport in an aqueous environment. Herein, we have successfully fabricated an underwater superoleophilic two-dimensional surface (USTS) with asymmetric oleophobic barriers to arbitrarily manipulate oil in aqueous medium. The behavior of oil on USTS was carefully investigated, of which the unidirectional spreading capability was originated from the anisotropic spreading resistance resulted from the asymmetric oleophobic barriers. Accordingly, an underwater oil/water separation device has been developed, which can achieve continuous and efficient oil/water separation and further prevent the secondary pollution caused by oil volatilization.

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Freezing processes for a vertically copper, superhydrophobic, and hybrid patterned surface – A visualization study

Zheng

Yang

et al. 2023

Applied Thermal Engineering

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Moist air condensation heat transfer enhancement via superhydrophobicity

Cited by 20 publications

References 30 publications

A Review of Recent Advances in Superhydrophobic Surfaces and Their Applications in Drag Reduction and Heat Transfer

A Review of Recent Advances in Superhydrophobic Surfaces and Their Applications in Drag Reduction and Heat Transfer

Bioinspired Underwater Superoleophilic Two-Dimensional Surface with Asymmetric Oleophobic Barriers for Unidirectional and Long-Distance Oil Transport

Freezing processes for a vertically copper, superhydrophobic, and hybrid patterned surface – A visualization study

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