Condensation heat transfer of CO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si3.svg"><mml:msub><mml:mrow/><mml:mn>2</mml:mn></mml:msub></mml:math> on Cu based hierarchical and nanostructured surfaces

Snustad, Ingrid; Hollund, Lene; Ervik, Åsmund; Austegard, Anders; Brunsvold, Amy L.; He, Jianying

doi:10.1016/j.ijheatmasstransfer.2021.121367

Cited by 3 publications

(1 citation statement)

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“…It can be seen that most simulation studies add CO2 as a guest molecule and discuss the effect of the degree of CO2 enrichment on the wettability of the original system, or observe the difference in wettability of the mixed system compared to the original system, and do not directly derive the wettability characteristics of pure CO2 droplets. Furthermore, fundamental studies on the wetting and condensation behavior of CO2 on heat transfer surfaces in a gaseous atmosphere are largely limited [19], [20], but this is essential to study the gas-liquid phase change precipitation of CO2 in the PLNG process. Experimental conditions that maintain the stable presence of CO2 droplets while also measuring their contact angle are not easily achieved, and experimental studies on the wettability of pure CO2 droplets have hardly been reported so far.…”

Section: Introductionmentioning

confidence: 99%

Wetting Behavior of CO₂ Droplets on Smooth Solid Surface: Molecular Simulation Perspective

Cao,

Zhao

et al. 2023

J. Phys.: Conf. Ser.

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The wettability of droplets on solid surfaces is important for accurately revealing the microscopic mechanisms of gas condensation nucleation and droplet growth. During the contact condensation of CO2 gas on the heat exchanger surface in the pressurized liquefied natural gas technology, the wettability of CO2 droplets on the heat exchanger surface directly affects the heat transfer thermal resistance of the heat exchanger, which then affects the heat transfer efficiency of methane and ethane in the heat exchanger. Therefore, molecular dynamics simulations were used to study the spreading process and wetting patterns of nanoscale CO2 droplets on different energy surfaces. The results show that as the potential well depth ε of the wall atoms increases, the intensity of the solid-liquid interaction increases and the corresponding surface energy increases accordingly, showing different droplet spreading rates and wetting characteristics. Unlike the interfacial characteristics of macroscopic droplets, there are significant fluctuations at the gas-liquid interface of droplets on the molecular scale, but microdroplets can still form a specific contact angle after spreading on different energy surfaces in a statistical sense, and this contact angle decreases with increasing intensity of solid-liquid interaction. The low-energy surface at potential well depths ε less than 266 J·mol-1 exhibits a CO2-phobicity, and the surface becomes CO2-philic as the potential well depth continues to increase. The trend of the contact angle of CO2 droplets affected by temperature is the same as that of the center-of-mass height, which characterizes the spreading morphology of CO2 droplets. As the temperature increases, the contact angle decreases due to the further spreading and wetting of droplets on different energy surfaces. As the CO2-philicity of the surface gets higher, the contact angle decreases to a greater extent.

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Section: Introductionmentioning

confidence: 99%

Wetting Behavior of CO₂ Droplets on Smooth Solid Surface: Molecular Simulation Perspective

Cao,

Zhao

et al. 2023

J. Phys.: Conf. Ser.

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Exploring the effect of surface wettability on heterogeneous condensation of carbon Dioxide: A molecular dynamics study

Cao

Cai

et al. 2023

Journal of Molecular Liquids

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Matrix Array of Hybrid Micro/Nano Structures for Boosting Boiling Heat Transfer

Xie,

Zhang,

Liu

et al. 2024

Preprint

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Condensation heat transfer of CO2 on Cu based hierarchical and nanostructured surfaces

Cited by 3 publications

References 34 publications

Wetting Behavior of CO₂ Droplets on Smooth Solid Surface: Molecular Simulation Perspective

Wetting Behavior of CO₂ Droplets on Smooth Solid Surface: Molecular Simulation Perspective

Exploring the effect of surface wettability on heterogeneous condensation of carbon Dioxide: A molecular dynamics study

Matrix Array of Hybrid Micro/Nano Structures for Boosting Boiling Heat Transfer

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Condensation heat transfer of CO2 on Cu based hierarchical and nanostructured surfaces

Cited by 3 publications

References 34 publications

Wetting Behavior of CO2 Droplets on Smooth Solid Surface: Molecular Simulation Perspective

Wetting Behavior of CO2 Droplets on Smooth Solid Surface: Molecular Simulation Perspective

Exploring the effect of surface wettability on heterogeneous condensation of carbon Dioxide: A molecular dynamics study

Matrix Array of Hybrid Micro/Nano Structures for Boosting Boiling Heat Transfer

Contact Info

Product

Resources

About

Wetting Behavior of CO₂ Droplets on Smooth Solid Surface: Molecular Simulation Perspective

Wetting Behavior of CO₂ Droplets on Smooth Solid Surface: Molecular Simulation Perspective