Numerical study of wavy collecting electrodes with different shapes of corona electrodes

Abstract

Because of their high collection efficiency, electrostatic precipitators (ESPs) have become one of the most effective tools for removing particulates from flue gases in a variety of industries. However, it is difficult to meet the desired collection efficiency in some industrial applications. In planning the ESP devices, numerical models greatly help predict the performance. Many investigation groups are conducting projects to enhance the existing models considerably. One improvement region is creating a model to calculate the electrode shape’s effect. This study explores the wavy arrangement of collecting plates in combination with three shapes of corona wires that impact the efficiency of a single-stage ESP. Three different discharge electrodes are used (circular wire (CW), square wire (SW), and 45° square wire (45° SW)) in wavy plates (WPs). The comparison is made to flat plates (FPs) as a reference. This study demonstrates how the geometry of corona electrodes by using (WPs) affects the distribution of electric field strength, electric potential, space charge density, current density, fluid flow velocity, and collection efficiency.