Measurements of EHD flow patterns in ESP with DC+Pulsed voltage hybrid power supply

Abstract

Results of Particle Image Velocimetry (PIV) measurements in an electrostatic precipitator (ESP) supplied with high voltage pulses superimposed on DC voltage are presented in this paper. The ESP had a stainless-steel wire discharge electrode placed between two grounded, stainless-steel plate collecting electrodes. The DC high voltage (0-20 kV) with superimposed voltage pulses (0-30 kV), either positive or negative polarity, was applied to the wire electrode. We found no effect of the applied voltage pulses upon the flow patterns when there was no DC voltage. However, when the high voltage pulses were superimposed on DC high voltage, the flow patterns were affected significantly. © 2008 IOP Publishing Ltd.