Particle precipitation efficiency in an electrostatic precipitator

In this paper, results of the measurements of the size distribution of seed particles after their precipitation in a wire-plate-type ESP with seven wire electrodes are presented. The cigarette smoke was used as a source of seed particles. The particles of sizes from 0.5 to 8 μm were counted in the 0.5 μm-wide ranges at the ESP outlet using a particle size-meter of the laser light reflection type. The particle precipitation efficiency for each size fraction was determined for various primary flow velocities at positive and negative voltage polarity. Due to the size-meter measuring range limited to the particles larger than 0.5 μm, the present measurements do not show the precipitation of the particles of sizes smaller than 0.5 μm.