The following equation determines the velocity of a charged particle suspended in a gas and under the influence of an electric field by equating the electric and Stokes drag forces on the particle:
Here, Vp is the particle migration velocity toward the collector electrode, and E is the collector electric field. The value for n depends on whether field or diffusion charging is predominant. Particles charged by field charging reach a steady-state migration velocity, whereas the migration velocity for small particles charged by diffusion charging continues to increase throughout the time that the dust is retained in the precipitator.
Was this article helpful?