Wire Radius Collector Radius Wire Roughness Secondary Emission Avalanche Coefficient Ionizing Radiation Corona Generation Resistivity Van Der Waals, Molecular & Mechanical Electric Field In Deposit Particle Retaining Force Gas Velocity Negative Ion Formation Electric Wind Electronegative Gas Gas Velocity Velocity Distribution Collection Area Volume Flow Particle Collection Applied voltage Gas Density Ion Mobility Dust Thickness Sectionalization Collection Area Wire Radius Collector Radius Electric Field Particle Re-entrainment Space Charge Dust Removal Gas & Uncollected Dust Powerpoint recreation courtesy of www.ppcair.com from EPA-650/2-74-132 – July 1972 . Enviornmental Protection Technology Series: An Electrostatic Precipitator Performance Model Collected Dust Particle Size Dielectric Constant Time Temperature Dust Load Gas & dust Ion Velocity Particle Charging Dust Load Plate Design Hopper Design Gas Velocity Gas Distribution Rapping Force Rapping Interval Particle Size Dust Properties Temperature Figure 1.1. Electrostatic Precipitator System Model Source: EPA-650/2-74-132 Recreated via www.ppcair.com