| Efficient condensation on spiked surfaces with superhydrophobic and superhydrophilic coatings | |
Hu, KaiXin1,2 ; Chen, YinJiang1,2; Wu, Dan1,2; Tang, BinWei1,2; Tao YQ(陶跃群)4; Chen QS(陈启生)3,4
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| Corresponding Author | Hu, Kai-Xin(hukaixin@nbu.edu.cn) |
| Source Publication | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
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| 2025-08-15 | |
| Volume | 246Pages:15 |
| ISSN | 0017-9310 |
| Abstract | Steam condensation on the surface of a solid is a widely observed mode of energy transfer in nature and various industrial applications. The condensation efficiency is closely related to the material properties and geometric morphology of the solid surface, as well as the method of liquid removal. Despite many surface modification strategies having been employed to enhance condensation, most experiments use gravity to remove condensate, thereby limiting the application scenarios. Here, we report a method without relying on gravity that uses superhydrophilic and superhydrophobic coatings as well as spiked surfaces to achieve efficient steam condensation and rapid removal of the liquid. We reveal that hydrophobic spiked surfaces facilitate the dropwise condensation, while hydrophilic bottom grooves promote liquid spreading, and the suction in capillary gaps can promptly remove the condensate liquid. Thus, a high heat flux density of 920.7 kW/m2 and a high condensation efficiency 94% are obtained in an open environment. Additionally, we demonstrate that the pipe with a spiked inner surface has a significantly higher condensation efficiency compared to the smooth pipe. This finding provides a new approach for efficient steam condensation technology in phase-change heat transfer applications. |
| Keyword | Condensation spiked surfaces Superhydrophobic superhydrophilic |
| DOI | 10.1016/j.ijheatmasstransfer.2025.127055 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001469960500001 |
| WOS Keyword | DROPWISE CONDENSATION ; HEAT-TRANSFER ; DYNAMICS ; REMOVAL ; GROWTH |
| WOS Research Area | Thermodynamics ; Engineering ; Mechanics |
| WOS Subject | Thermodynamics ; Engineering, Mechanical ; Mechanics |
| Funding Project | National Natural Science Foundation of China[12372247] ; Zhejiang Provincial Natural Science Foundation[LZ25A020009] ; Ningbo Municipality Key Research and Development Program[2022Z213] ; China Manned Space Engineering Application Program-China Space Station Experiment Project[TGMTYY1401S] |
| Funding Organization | National Natural Science Foundation of China ; Zhejiang Provincial Natural Science Foundation ; Ningbo Municipality Key Research and Development Program ; China Manned Space Engineering Application Program-China Space Station Experiment Project |
| Classification | 一类 |
| Ranking | 3+ |
| Contributor | Hu, Kai-Xin |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/101053 |
| Collection | 微重力重点实验室 |
| Affiliation | 1.Ningbo Univ, Zhejiang Prov Engn Res Ctr Safety Pressure Vessel, Ningbo 315211, Zhejiang, Peoples R China; 2.Ningbo Univ, Key Lab Impact & Safety Engn, Minist Educ, Ningbo 315211, Zhejiang, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100190, Peoples R China; 4.Chinese Acad Sci, Key Lab Micrograv, Inst Mech, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Hu, KaiXin,Chen, YinJiang,Wu, Dan,et al. Efficient condensation on spiked surfaces with superhydrophobic and superhydrophilic coatings[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2025,246:15. |
| APA | Hu, KaiXin,Chen, YinJiang,Wu, Dan,Tang, BinWei,陶跃群,&陈启生.(2025).Efficient condensation on spiked surfaces with superhydrophobic and superhydrophilic coatings.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,246,15. |
| MLA | Hu, KaiXin,et al."Efficient condensation on spiked surfaces with superhydrophobic and superhydrophilic coatings".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 246(2025):15. |
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