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Numerical calculation of particle collection efficiency in an electrostatic precipitator

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Abstract

The present numerical study involves the finding of the collection efficiency of an electrostatic precipitator (ESP) using a finite volume (ANUPRAVAHA) solver for the Navier–Stokes and continuity equations, along with the Poisson’s equation for electric potential and current continuity. The particle movement is simulated using a Lagrangian approach to predict the trajectory of single particles in a fluid as the result of various forces acting on the particle. The ESP model consists of three wires and three collecting plates of combined length of L placed one after another. The calculations are carried out for a wire-to-plate spacing H= 0.175 m, length of ESP L= 2.210 m and wire-to-wire spacing of 0.725 m with radius of wire R wire= 10 mm and inlet air-particle velocity of 1.2 m/s. Different electrical potentials (φ= 15–30 kV) are applied to the three discharge electrodes wires. It is seen that the particle collection efficiency of the ESP increases with increasing particle diameter, electrical potential and plate length for a given inlet velocity.

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Correspondence to NARENDRA GAJBHIYE.

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GAJBHIYE, N., ESWARAN, V., SAHA, A.K. et al. Numerical calculation of particle collection efficiency in an electrostatic precipitator. Sadhana 40, 863–873 (2015). https://doi.org/10.1007/s12046-015-0342-1

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  • DOI: https://doi.org/10.1007/s12046-015-0342-1

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