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The authors present an analysis of the performance of a wire-duct electrostatic precipitator influenced by different geometrical parameters. The precipitation efficiency is determined for both the cement and steel industries considering different inlet dust weight values. The effect of both the applied voltage and the gas flow speed on the precipitation efficiency is also studied. The present findings are correlated to the physics of corona discharge.

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Six phase power transmission has many advantages over the conventional three phase techniques. It offers an improvement in space utilization, low noise levels, high reliability and reduction in corona effects. To study and analyze the corona in six phase transmission lines, the field calculations are required as a first step. The authors describe a method to calculate the electric field in the vicinity of HV six phase transmission line conductors. The electric field is calculated at any point in the space surrounding the six phase line. The lateral distribution of the field over the ground surface and underneath the conductors of six phase HV transmission lines is calculated. The effect of different gap parameters is also studied. (10 refs.)

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In this paper, the author suggests two methods for calculating the induced currents and voltages of an isolated object located underneath or near an energized HVDC transmission line with bundle conductors irrespective of the geometry of the object. The lateral distribution of such induced currents and voltages of isolated objects situated underneath or near energized transmission lines with bundle conductors is calculated by using a simple method based on the equivalent area of such an object.

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