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Original Articles

Factors Affecting the Resistivity of a Particulate Layer in Electrostatic Precipitators

Pages 866-870 | Published online: 13 Mar 2012
 

Abstract

This paper develops an expression for the resistivity of a dust layer which takes into account its particulate nature, dependence of the surface resistivity component on water vapor pressure and temperature, the volume resistivity and the intrinsic properties of the particulate material. A new expression is given for the surface resistivity which, when combined with the equation for volume resistivity, enables the effective resistance of a dust layer to be characterized by five meaningful parameters. These parameters may be determined for a given fly ash sample from a standard set of resistivity curves. Calculated resistivity curves for an industrially produced fly ash are compared with measured curves.

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