The enhanced aerosol deposition by bipolar corona discharge arrays

Jiacheng LI (李嘉诚); Zhongzheng HUANG (黄钟政); Dawei LIU (刘大伟); Kuanlei ZHENG (郑宽磊)

doi:10.1088/2058-6272/abf6ad

Plasma Science and Technology > 2021 > 23(6): 64010-064010. > DOI: 10.1088/2058-6272/abf6ad

Jiacheng LI (李嘉诚), Zhongzheng HUANG (黄钟政), Dawei LIU (刘大伟), Kuanlei ZHENG (郑宽磊). The enhanced aerosol deposition by bipolar corona discharge arrays[J]. Plasma Science and Technology, 2021, 23(6): 64010-064010. DOI: 10.1088/2058-6272/abf6ad

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The enhanced aerosol deposition by bipolar corona discharge arrays

¹ State Key Lab of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
² School of Electrical and Information Engineering, Wuhan Institute of Technology, Wuhan 430205, People's Republic of China

Funds: This study is supported by National Key Research and Development Plan of China (No. 2016YFC0401001).

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Received Date: December 14, 2020
Revised Date: April 06, 2021
Accepted Date: April 08, 2021

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Abstract

Abstract

The corona discharges provide an efficient way to induce precipitation or eliminate fog by increasing ion density in the open air. In this paper, one bipolar corona discharge array (positive and negative high voltage coupled simultaneously) which can generate high densities of positive and negative ions is developed. The comparison between bipolar corona discharge array and unipolar corona discharge array (positive or negative coupled only) indicates that bipolar corona discharge array can generate ~3 times higher ion density than unipolar corona discharge array. More charged aerosols are produced through collisions between ions and aerosols. The collision rate between aerosols is increased substantially by the attractive forces between positively and negatively charged aerosols. The deposition of aerosols induced by bipolar discharges is 25.7% higher than that of unipolar discharges at the humidity super-saturation condition. Therefore, the bipolar corona discharge system is a new option for the large scale ion sources used for artificial weather modification.
- corona discharges,
- charged aerosols,
- bipolar discharges

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References (41)

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