On the role of confinement plate wettability on pool boiling heat transfer

Sarode, Ajinkya; Raj, Rishi; Bhargav, Atul

doi:10.1016/j.ijheatmasstransfer.2020.119723

Cited by 13 publications

(1 citation statement)

References 45 publications

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“…Recently, the self-propelled motion of condensate drops on some SHSs has attracted increasing attention due to its potential applications in delaying frost growth ( Hao et al, 2014 ; Jiang et al, 2020 ; Mohammadian et al, 2020 ), enhancing condensation heat transfer ( Hao et al, 2018 ; Sarode et al, 2020 ), stronger self-cleaning ( Geyer et al, 2020 ), and breathable anti-condensation coating on buildings ( Wu et al, 2021 ). Wang et al (2021) demonstrated that the vapor molecules can be intercepted by oblique nanowires and preferentially nucleate at near-surface locations, avoiding the penetration of vapor into the microscale gaps.…”

Section: Introductionmentioning

confidence: 99%

“Anti-Condensation” Aluminum Superhydrophobic Surface by Smaller Nanostructures

Zhao

Yang

et al. 2022

Front. Bioeng. Biotechnol.

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According to classical heterogeneous nucleation theory, the free energy barrier (ΔGc) of heterogeneous nucleation of vapor condensation ascends dramatically as the substrate nanostructure diameter (Rs) decreases. Based on this idea, we fabricated two types of superhydrophobic surfaces (SHSs) on an aluminum substrate by different roughening processes and the same fluorization treatment. Water vapor condensation trials by optical microscope and ESEM confirmed that on SHSs with submicron rectangle structures, a typical self-propelled motion of condensates or jumping condensation occurred. However, on SHS with coral-like micro/nano-structures, vapor nucleation occurred tardily, randomly, and sparsely, and the subsequent condensation preferentially occurred on the nuclei formed earlier, e.g., the condensation on such SHS typically followed the Matthew effect. Higher vapor-liquid nucleation energy barrier caused by smaller fluorinated nanostructures should be responsible for such a unique “anti-condensation” property. This study would be helpful in designing new SHSs and moving their application in anti-icing, anti-fogging, air humidity control, and so on.

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