A sectional model to predict performance of a plate-wire electrostatic precipitator for collecting polydisperse particles

A sectional model for simultaneous flow convection and electrostatic force is presented to predict performance of a plate-wire electrostatic precipitator (ESP). The electric field distribution was gained by solving Poisson’s equation and the current continuity equation, the particle charge was obtained by Cochet’s equation, and the sectional approach was employed for simulating the evolution of particle-size distribution along the ESP. The mass efficiencies predicted by the present model are in good agreement with experimental data of Salcedo and Munz (1978, Proc. 3rd Int. Conf. on Electrostatic Precipitation, Italy, pp. 343–359) at high applied voltages ( 30 kV). Under the same operating conditions the present model along with Deustch-Anderson, Feldman, Southern Research Institute (SoRI), and moment-lognormal models are tested to determine their relative abilities in predicting the Salcedo and Munz experimental data. The present model was also applied to provide insight into the evolution of particle-size distribution along a plate-wire ESP and its effects on the ESP performance.