Effect of distance between barb tip and electrode on current density distribution in unipolar barbed plate-plate electrostatic purifier

GUI Li1, HE Yuan2, PAN Ai-qiang1, WANG Can-xing1

(1. School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China;

2. Dongfang Turbine Co., Ltd., Deyang 618000, China)

Abstract: In the unipolar barbed plate-plate electrostatic purifier, purification efficiency of the micro oil fume particles is low. In order to solve the problem of low purification efficiency by optimizing the structure parameters, the numerical simulation was used to analyze the effect of the distance between the barb tip and the electrode on the current density distribution. The electric field equations and the boundary conditions were proposed on the foundation of the wire-plate electrostatic precipitator and the system of equations was solved by the method of finite volume. Then, the numerical simulation results were compared with the experimental data to evaluate the accuracy of the electrical field model. The accurate numerical simulation method were applied to analyze the effect of the distance between the barb tip and the electrode on the current density distribution in the unipolar barbed plate-plate electrostatic purifier. The results indicate that suitable distance between the barb tip and the electrode is from 40mm to 75mm, during which the current density distribution is uniform and the value of the current density is high.