Zelong Liao1, Yuheng Li1, Xiangsheng Xiao1, Chen Wang1, Shang Cao1, Yong Yang 1,2 1 State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical Engineering and Electronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
2 Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240, China
Received:
August 4, 2017
Revised:
November 14, 2017
Accepted:
December 27, 2017
Download Citation:
||https://doi.org/10.4209/aaqr.2017.08.0261
Cite this article:
Liao, Z., Li, Y., Xiao, X., Wang, C., Cao, S. and Yang, Y. (2018). Electrostatic Precipitation of Submicron Particles with an Enhanced Unipolar Pre-Charger.
Aerosol Air Qual. Res.
18: 1141-1147. https://doi.org/10.4209/aaqr.2017.08.0261
HIGHLIGHTS
ABSTRACT
A two-stage electrostatic precipitator (ESP) has been developed using an enhanced unipolar pre-charger with dielectric coated ground electrodes. The electrical and particle collection performance was evaluated for particles in the submicron range. By varying the voltage applied to the pre-charger, the particle charging characteristics was compared with that calculated by the theoretical model. The experimental results show that with the adoption of the pre-charger, the charging of the particles at submicron range was enhanced. Further results indicate that the collection efficiency can be improved by about 12.1%–15.9%, compared with the results obtained without the pre-charger. Higher particle collection efficiency can be achieved by increasing the voltage applied to the pre-charger. The unipolar pre-charger studied in this paper proves to be a simple and useful device to improve the submicron particle collection efficiency of conventional ESPs.
Keywords:
Unipolar pre-charger; Electrostatic precipitator; Particulate matter; Corona discharge; Submicron particle.
