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浙江大学学报(工学版)
J4  2013, Vol. 47 Issue (12): 2208-2211    DOI: 10.3785/j.issn.1008-973X.2013.12.021
    
Experimental study of ionic wind in an electrostatic precipitator
ZENG Yu-xuan, SHEN Xin-jun, ZHANG Xu-ming, LIU Zhen, YAN Ke-ping
Key Laboratory of Biomass Chemical Engineering of Ministry of Education, University,Hangzhou 310027, China
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Abstract  

With the corona discharge generated near corona inception voltage, the processes of generation and acceleration of ionic wind inside a needle-plate type electrostatic precipitator(ESP) were studied by using a two-dimensional particle image velocimetry (2D-PIV) system. The measurements were carried out without external flows in order to investigate the ionic wind itself. Measuring point focused on the area close to the discharge electrode and cigarette smoke was used as the seeding particle. Experimental results show that: ionic wind can be generated under -3 kV and a typical ionic wind flow map is presented between needle and plate electrodes. The ionic wind is usually accelerated up to its maximum within 5-15 mm distance away from the discharge electrode with the acceleration of electric field, and then the ionic wind velocity begins to decline. The ionic wind velocity is almost linearly proportional to the applied voltage. In addition, the input power is the key factor determining the ionic wind velocity. Distances between needle and plate electrodes influence the performance of the ionic wind, but less effective comparing with the input power.

Published: 01 December 2013
CLC:  X 513  
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Cite this article:

ZENG Yu-xuan, SHEN Xin-jun, ZHANG Xu-ming, LIU Zhen, YAN Ke-ping. Experimental study of ionic wind in an electrostatic precipitator. J4, 2013, 47(12): 2208-2211.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2013.12.021     OR     http://www.zjujournals.com/eng/Y2013/V47/I12/2208


电除尘器中离子风的实验研究

利用二维激光粒子成像测速技术（2D-PIV）,在接近起晕电压的条件下研究了针-板型电除尘器中离子风产生和传播的规律.实验中,在没有外加气流的条件下对离子风进行测试,测试点位于放电电极附近,示踪粒子为香烟.结果表明:离子风能在相对较低的电压（-3 kV）下产生,并在针-板电极间形成典型的离子风流场;离子风在电场的加速下,当其离开放电极为5～15 mm时,可以达到最大值,随后其速度开始下降,且离子风速度与施加于高压电极的电压满足线性关系;输入功率是决定离子风速度的关键因素,输入功率对离子风的加速作用远大于电极间距对离子风速度的影响.

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