Water condensate morphologies on a cantilevered microfiber

Water collection via fiber-based coalescers shows promise in mitigating increasing water scarcity, and most studies usually focus on the water collection by accumulating water through successive coalescences of fog in the absence of condensation. Here, we report on non-uniform condensate morphologie...

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Veröffentlicht in:Journal of applied physics 2020-06, Vol.127 (24)
Hauptverfasser: Zhu, Fangqi, Fang, Wen-Zhen, Zhang, Hui, Zhu, Zhibing, New, Tze How, Zhao, Yugang, Yang, Chun
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container_issue 24
container_start_page
container_title Journal of applied physics
container_volume 127
creator Zhu, Fangqi
Fang, Wen-Zhen
Zhang, Hui
Zhu, Zhibing
New, Tze How
Zhao, Yugang
Yang, Chun
description Water collection via fiber-based coalescers shows promise in mitigating increasing water scarcity, and most studies usually focus on the water collection by accumulating water through successive coalescences of fog in the absence of condensation. Here, we report on non-uniform condensate morphologies observed during air–vapor mixture condensation on a cantilevered microfiber. Due to the competition between thermal conduction resistance within the fiber and condensation heat transfer resistance on the fiber surface, the vapor diffusive flux along the fiber varies accordingly, engendering three representative condensate morphologies. We systematically examine the effects of fiber length, diameter, and material (constantan, 316L steel, and alumel) on these condensate morphologies. Scaling analyses are also provided to reveal the underlying physics. Our experimental investigations and theoretical analyses reported in this work shed more light on air–vapor mixture condensation mechanisms that could pave the way to future condensation-associated applications.
doi_str_mv 10.1063/5.0007474
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subjects Applied physics
Austenitic stainless steels
Collection
Condensates
Constantan
Microfibers
Morphology
Thermal resistance
Vapors
title Water condensate morphologies on a cantilevered microfiber
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