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Graphical Methodology to Study the Corona Onset Voltage for Electrostatic Precipitation of Nanoparticles

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Abstract

The corona onset voltage is an important operating parameter in the electrostatic precipitation of nanoparticulate, however, its experimental determination depends on the accuracy of the measuring equipment. In this study, a theoretical approach based on the Townsend law was developed to determine the onset voltages and to further investigate the characteristics of an electrostatic precipitator (ESP). The experiments to obtain preliminary data were performed at low air velocities (1.03–4.08 cm/s), varying the number of discharge electrodes from 1 to 4. The theoretical onset voltages agreed with the experimental data and increased with the addition of wires. The ESP could achieve 99% particle charging despite the shielding effect observed in some configurations.

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Funding

This study was financed by Conselho Nacional de Desenvolvimento Científico e Tecnológico

(CNPq, Finance Code 141299/2019-3, 132829/2018-5) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES, Finance Code 001).

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Authors and Affiliations

  1. Department of Chemical Engineering, Federal University of São Carlos, CEP 13560-970, São Carlos, SP, Brazil

    R. G. S. A. Andrade, A. E. de Oliveira & V. G. Guerra

Authors
  1. R. G. S. A. Andrade
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  2. A. E. de Oliveira
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  3. V. G. Guerra
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Correspondence to R. G. S. A. Andrade.

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Andrade, R.G., de Oliveira, A.E. & Guerra, V.G. Graphical Methodology to Study the Corona Onset Voltage for Electrostatic Precipitation of Nanoparticles. Theor Found Chem Eng 56, 504–512 (2022). https://doi.org/10.1134/S0040579522040212

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  • DOI: https://doi.org/10.1134/S0040579522040212

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