Experimental Investigation of Dropwise Condensation Shedding by Shearing Airflow in Microgravity Using Different Surface Coatings
文献类型：期刊论文
| 作者 | Bonab, MiladShakeri; Minetti, Christoph3; Iorio, CarloSaverio; Zhao DD(赵栋栋); Liu QS(刘秋生) ; Ou, Junfei1; Kempers, Roger; Amirfazli, Alidad
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| 刊名 | LANGMUIR
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| 出版日期 | 2023 |
| ISSN号 | 0743-7463 |
| DOI | 10.1021/acs.langmuir.2c01898 |
| 英文摘要 | The shedding kinematics of water droplets in a condensation environment when exposed to aerodynamic forces in microgravity was studied. Understanding the shedding of droplets from a surface is a critical part of the dropwise condensation process for improving heat transfer. Because gravity as a droplet removal technique is not available in space, the use of airflow to shed droplets is considered for condensing heat exchangers in environmental control and life support systems. Surface coatings affect drop adhesion, and here, four different surfaces (PMMA, PS, PTFE, and SHS) and various droplet sizes (80, 60, and 40 mu L) were used to understand the above phenomenon. It was found that the critical velocity to shed a droplet in microgravity was up to 8% lower than that in normal gravity. Also, the effect of the droplet size was investigated for both microgravity and normal gravity; the shedding velocity was lower for microgravity, and it decreased as droplet size increased. Increasing the hydrophobicity of the coating decreased the critical velocity for shedding. Finally, the droplet was found to detach from superhydrophobic surfaces in microgravity. The detachment of droplets from the substrate will hamper the condensation process that can produce a larger fresh area; also, detachment of droplets and entrainment in airflow counter the concept of removing moisture from the air in a dehumidification process. |
| 分类号 | 二类 |
| WOS研究方向 | Chemistry, Multidisciplinary ; Chemistry, Physical ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000912720200001 |
| 资助机构 | European Space Agency (ESA) under the MAP program ; China Manned Space Agency (CMSA) |
| 其他责任者 | Amirfazli, M (corresponding author), York Univ, Dept Mech Engn, Toronto, ON M3J 1P3, Canada. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/91834]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing 101400, Peoples R China 2.Univ Libre Bruxelles, Serv Chim Phys, B 1050 Brussels, Belgium 3.York Univ, Dept Mech Engn, Toronto, ON M3J 1P3, Canada 4.Jiangsu Univ Technol, Sch Mech Engn, Changzhou 213006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bonab, MiladShakeri,Minetti, Christoph,Iorio, CarloSaverio,et al. Experimental Investigation of Dropwise Condensation Shedding by Shearing Airflow in Microgravity Using Different Surface Coatings[J]. LANGMUIR,2023. |
| APA | Bonab, MiladShakeri.,Minetti, Christoph.,Iorio, CarloSaverio.,赵栋栋.,刘秋生.,...&Amirfazli, Alidad.(2023).Experimental Investigation of Dropwise Condensation Shedding by Shearing Airflow in Microgravity Using Different Surface Coatings.LANGMUIR. |
| MLA | Bonab, MiladShakeri,et al."Experimental Investigation of Dropwise Condensation Shedding by Shearing Airflow in Microgravity Using Different Surface Coatings".LANGMUIR (2023). |
入库方式： OAI收割
来源：力学研究所
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