Visualization of Dust Collection in DC-Corona-Driven Electrostatic Precipitator

In electrostatic precipitators (ESPs), dc corona discharge is typically used for collecting dust. Occurrence of a corona discharge in the space between electrodes causes strong disturbances of the externally forced flow. Consequently, the secondary flow of dust particles in the ESP assumes complicated structures. In this paper, the particle flow structures and the patterns of particle deposits on a collecting electrode in a spike-plate-type ESP are presented.