干旱区生态环境知识资源中心(Arid): Numerical simulation of the enhancing effect of micro-nano protrusions on electrostatic fog harvesting

Arid

DOI	10.1088/1361-6463/acdaa6
	Numerical simulation of the enhancing effect of micro-nano protrusions on electrostatic fog harvesting
	Zhang, Ming; Xiao, Menghan; Li, Chuan; Li, Dingchen; Li, Jiawei; Yu, Kexun; Pan, Yuan
通讯作者	Li, C
来源期刊	JOURNAL OF PHYSICS D-APPLIED PHYSICS
ISSN	0022-3727
EISSN	1361-6463
出版年	2023
卷号	56 期号:38
英文摘要	Fog harvesting is one potential approach to provide supplementary water resources in arid areas. Considerable research has been devoted to electrostatic fog harvesting technology, but there are still some problems, such as high voltage, complex structures and expensive cost. Decorating micro-nano protrusions on the electrode is an effective method to lower the operating voltage and improve fog harvesting efficiency, and the enhancement effect of protrusions has already been experimentally demonstrated. However, the enhancement mechanism at the microscopic level is less reported. This manuscript tries to explain why micro-nano protrusions can enhance the discharge and electrostatic fog harvesting, via numerical simulation. Three key processes of corona discharge, fog droplet migration and fog harvesting efficiency are discussed in detail, especially the influence of droplet size, the tip radius of the protrusion, the protrusion-protrusion angle and so on. The numerical simulation results show that the inception voltage of the barbed electrode decreases from 7 kV to 3 kV (a decrease of 57%), and the current increases significantly (e.g. by 68% at 15 kV). At 15 kV, the fog harvesting efficiency of the barbed electrode is higher (29.8%) than that of the smooth wire (25.7%), even with a less-effective collection area. The collection efficiency increases with the droplet size, and there is an optimized ratio (similar to 1 parts per thousand) of the protrusion tip radius and wire radius to gain high collection efficiency. These research results are beneficial for understanding the microscopic mechanism of protrusions that enhance electrostatic fog harvesting, and provide guidance for further fog harvesting equipment improvement.
英文关键词	corona discharge micro-nano protrusion electrostatic fog harvesting barbed electrode
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001011462600001
WOS关键词	CORONA DISCHARGE ; SPACE-CHARGE ; COLLECTION ; FIELD ; WIRE
WOS类目	Physics, Applied
WOS研究方向	Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397503
推荐引用方式 GB/T 7714	Zhang, Ming,Xiao, Menghan,Li, Chuan,et al. Numerical simulation of the enhancing effect of micro-nano protrusions on electrostatic fog harvesting[J],2023,56(38).
APA	Zhang, Ming.,Xiao, Menghan.,Li, Chuan.,Li, Dingchen.,Li, Jiawei.,...&Pan, Yuan.(2023).Numerical simulation of the enhancing effect of micro-nano protrusions on electrostatic fog harvesting.JOURNAL OF PHYSICS D-APPLIED PHYSICS,56(38).
MLA	Zhang, Ming,et al."Numerical simulation of the enhancing effect of micro-nano protrusions on electrostatic fog harvesting".JOURNAL OF PHYSICS D-APPLIED PHYSICS 56.38(2023).