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Nanoparticle electrostatic loss within corona needle charger during particle-charging process

Huang, Cheng-Hsiung and Alonso, Manuel (2011) Nanoparticle electrostatic loss within corona needle charger during particle-charging process. Journal of Nanoparticle Research, 13 (1). pp. 175-184.

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Official URL: http://www.springerlink.com/content/a2014102405746...

Abstract

A numerical investigation has been carried out to examine the electrostatic loss of nanoparticles in a corona needle charger. Two-dimensional flow field, electric field, particle charge, and particle trajectory were simulated to obtain the electrostatic deposition loss at different conditions. Simulation of particle trajectories shows that the number of charges per particle during the charging process depends on the particle diameter, radial position from the symmetry axis, applied voltage, Reynolds number, and axial distance along the charger. The numerical results of nanoparticle electrostatic loss agreed fairly well with available experimental data. The results reveal that the electrostatic loss of nanoparticles increases with increasing applied voltage and electrical mobility of particles; and with decreasing particle diameter and Reynolds number. A regression equation closely fitted the obtained numerical results for different conditions. The equation is useful for directly calculating the electrostatic loss of nanoparticles in the corona needle charger during particle-charging process.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:10570
Deposited By:JNCASR
Deposited On:28 Feb 2011 06:34
Last Modified:28 Feb 2011 06:34

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