Adhesion Force of Dust Layer in Electric Field

Abstract

Adhesion force of a dust layer in an electric field similar to that in an electrostatic precipitator is theoretically and experimentally studied.
Talc and calcium carbonate are used as the test powder. Electric adhesion force of the dust layer is measured by an improved tensile test device. The electric adhesion force increases almost linearly with increase of applied electric field and also depends significantly on the void ratio of the dust layer, though it increases quadratically with field strength in the case of a homogeneous pure dielectric.
McLean's model of the adhesion force in an electric field is improved by use of the void fraction. The modified model is found to be in good agreement with the experimental results.