Sustained Condensation Efficiency on 3D Hybrid Surfaces
Condensation plays a crucial role in various applications. While superhydrophobic surfaces have been employed to enhance condensation, their performance significantly deteriorates with increasing subcooling, limiting their practicality. Hybrid surfaces offer a potential solution for improved condens...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-02-01
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| Series: | Small Structures |
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| Online Access: | https://doi.org/10.1002/sstr.202400406 |
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| author | Ching‐Wen Lo Yu‐Hsiang Chen Ming‐Chang Lu |
| author_facet | Ching‐Wen Lo Yu‐Hsiang Chen Ming‐Chang Lu |
| author_sort | Ching‐Wen Lo |
| collection | DOAJ |
| description | Condensation plays a crucial role in various applications. While superhydrophobic surfaces have been employed to enhance condensation, their performance significantly deteriorates with increasing subcooling, limiting their practicality. Hybrid surfaces offer a potential solution for improved condensation at high subcooling, but current designs fail to sustain effective condensation as subcooling rises. This study presents a three‐dimensional (3D) hybrid surface integrating short hydrophobic silicon nanowire arrays with hydrophilic microchannels. The formation of bridging droplets across multiple channels is observed, but they are efficiently removed from the 3D hybrid surface. The 3D hybrid surface exhibits sustained, simultaneous dropwise and filmwise condensation under medium to high subcooling conditions. Notably, it maintains a stable heat transfer coefficient across these subcooling conditions without experiencing the typical decline due to flooding observed on conventional surfaces at elevated subcooling temperatures. When compared to a plain hydrophilic surface at high subcooling, the 3D hybrid surface achieved remarkable improvements of 198% in condensation heat flux and 216% in heat transfer coefficient. This 3D hybrid surface represents a significant breakthrough for enhancing condensation in practical systems operating under high subcooling conditions. |
| format | Article |
| id | doaj-art-050f7c67c0a04a13bf08e7de53ff96f5 |
| institution | Kabale University |
| issn | 2688-4062 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Small Structures |
| spelling | doaj-art-050f7c67c0a04a13bf08e7de53ff96f52025-02-04T08:10:21ZengWiley-VCHSmall Structures2688-40622025-02-0162n/an/a10.1002/sstr.202400406Sustained Condensation Efficiency on 3D Hybrid SurfacesChing‐Wen Lo0Yu‐Hsiang Chen1Ming‐Chang Lu2Department of Mechanical Engineering National Chung Hsing University Taichung 402202 TaiwanDepartment of Mechanical Engineering National Taiwan University Taipei 106216 TaiwanDepartment of Mechanical Engineering National Taiwan University Taipei 106216 TaiwanCondensation plays a crucial role in various applications. While superhydrophobic surfaces have been employed to enhance condensation, their performance significantly deteriorates with increasing subcooling, limiting their practicality. Hybrid surfaces offer a potential solution for improved condensation at high subcooling, but current designs fail to sustain effective condensation as subcooling rises. This study presents a three‐dimensional (3D) hybrid surface integrating short hydrophobic silicon nanowire arrays with hydrophilic microchannels. The formation of bridging droplets across multiple channels is observed, but they are efficiently removed from the 3D hybrid surface. The 3D hybrid surface exhibits sustained, simultaneous dropwise and filmwise condensation under medium to high subcooling conditions. Notably, it maintains a stable heat transfer coefficient across these subcooling conditions without experiencing the typical decline due to flooding observed on conventional surfaces at elevated subcooling temperatures. When compared to a plain hydrophilic surface at high subcooling, the 3D hybrid surface achieved remarkable improvements of 198% in condensation heat flux and 216% in heat transfer coefficient. This 3D hybrid surface represents a significant breakthrough for enhancing condensation in practical systems operating under high subcooling conditions.https://doi.org/10.1002/sstr.2024004063D hybrid surfacebridging dropletcondensationfloodingheat transfer |
| spellingShingle | Ching‐Wen Lo Yu‐Hsiang Chen Ming‐Chang Lu Sustained Condensation Efficiency on 3D Hybrid Surfaces Small Structures 3D hybrid surface bridging droplet condensation flooding heat transfer |
| title | Sustained Condensation Efficiency on 3D Hybrid Surfaces |
| title_full | Sustained Condensation Efficiency on 3D Hybrid Surfaces |
| title_fullStr | Sustained Condensation Efficiency on 3D Hybrid Surfaces |
| title_full_unstemmed | Sustained Condensation Efficiency on 3D Hybrid Surfaces |
| title_short | Sustained Condensation Efficiency on 3D Hybrid Surfaces |
| title_sort | sustained condensation efficiency on 3d hybrid surfaces |
| topic | 3D hybrid surface bridging droplet condensation flooding heat transfer |
| url | https://doi.org/10.1002/sstr.202400406 |
| work_keys_str_mv | AT chingwenlo sustainedcondensationefficiencyon3dhybridsurfaces AT yuhsiangchen sustainedcondensationefficiencyon3dhybridsurfaces AT mingchanglu sustainedcondensationefficiencyon3dhybridsurfaces |