Experimental Investigation of Dropwise Condensation Shedding by Shearing Airflow in Microgravity Using Different Surface Coatings

doi:10.1021/acs.langmuir.2c01898

IMECH-IR > 微重力重点实验室

	Experimental Investigation of Dropwise Condensation Shedding by Shearing Airflow in Microgravity Using Different Surface Coatings
	Bonab, MiladShakeri ; Minetti, Christoph 1; Iorio, CarloSaverio ; Zhao DD(赵栋栋); Liu QS(刘秋生); Ou, Junfei 3; Kempers, Roger ; Amirfazli, Alidad
发表期刊	LANGMUIR
	2023
ISSN	0743-7463
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.
DOI	10.1021/acs.langmuir.2c01898
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000912720200001
WOS研究方向	Chemistry, Multidisciplinary ; Chemistry, Physical ; Materials Science, Multidisciplinary
WOS类目	Chemistry ; Materials Science
项目资助者	European Space Agency (ESA) under the MAP program ; China Manned Space Agency (CMSA)
论文分区	二类
力学所作者排名	3+
RpAuthor	Amirfazli, M (corresponding author), York Univ, Dept Mech Engn, Toronto, ON M3J 1P3, Canada.
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/91834
专题	微重力重点实验室
作者单位	1.York Univ, Dept Mech Engn, Toronto, ON M3J 1P3, Canada 2.Univ Libre Bruxelles, Serv Chim Phys, B 1050 Brussels, Belgium 3.Chinese Acad Sci, Inst Mech, Beijing 101400, Peoples R China 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).

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