An analysis of corona field charging kinetics for polydisperse aerosol particles by considering concentration and mobility

Alisoy, H.Z.; Alagöz, Barış Baykant; Alisoy, G.H.

doi:10.1088/0022-3727/43/36/365205

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…The sharp part of the needle is located in a hole in a grounded copper plate so that the space between the tip of the needle and the edge of the hole forms a volumetric of corona plasma region (see Figure 1). Aerosol nanoparticles passing through the plasma collide with ions and electrons and acquire electrical charges (15,(28)(29)(30)(31)(32)(33). The Qa aerosol flow was supplied through a 6 mm diameter hole in the top of the sheath.…”

Section: Methodsmentioning

confidence: 99%

Efficient Charging of Aerosol Nanoparticles by Corona-needle Charger with Improved Design for Printing of Metallic Microstructures

Efimov,

Patarashvili,

Kornyushin

et al. 2024

IJE

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Aerosol particle charging is widely used in various technical applications. A model of a needle-plate type charger for efficient charging of aerosol nanoparticles in a corona plasma discharge has been developed and investigated. The main difference from similar devices in the modernization of the grounded plate hole's geometry and the number of corona needles exist. This has resulted in a substantial increase in the charger's efficiency by over 25%. The effects of two types of discharge plates, one with cylindrical and the other with conical inner holes, on the extrinsic charging efficiency of aerosol particles were experimentally investigated. Metallic nanoparticles of Ag with sizes ranging from 20 to 160 nm and a number concentration of 10 6 to 10 8 cm -3 were utilized as the test aerosol. This system shows that the maximum efficiency of particle charging is attained by using a plate with a conical hole, which reduces electrostatic losses from 37±3% to 20±2%. Furthermore, an additional effect of increasing the particle charging efficiency was also observed by using a multi-pointed needle, which resulted in lower electrostatic losses compared to a single needle. Experimental evidence confirms that utilizing a conical hole in the plate and a multi-pointed needle has increased the particle charging efficiency from 47±3% to 59±4%, as opposed to the standard design featuring a cylindrical hole and a single-pointed needle. In this paper, an increase in the efficiency of charging particles in a charger with a multi-pointed needle compared to a single-pointed one is shown for the first time.

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Section: Methodsmentioning

confidence: 99%

Efficient Charging of Aerosol Nanoparticles by Corona-needle Charger with Improved Design for Printing of Metallic Microstructures

Efimov,

Patarashvili,

Kornyushin

et al. 2024

IJE

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show abstract

“…Koseoglu and Alisoy (2011) extended the theory into a stationary and rotational cylindrical dielectric particle in unipolar corona field. Furthermore, Alisoy et al (2010) made the analysis on the effect of particle concentration and mobility on the charging process, and illustrated that the ion density variation and the particle drift velocity could significantly affect the field charging kinetics.…”

Section: Continuum Regime (1) Field Chargingmentioning

confidence: 99%

“…Aliat et al (2008;) presented a twodimensional numerical model on airborne particle charging in a negative wire-tube corona charger with the combination coefficients of negative ions and electrons to airborne particles calculated by Fuchs's model, the numerical results of which showed good agreement with experimental data of Marquard (2005). Alisoy (2012) also developed a numerical method to investigate the charging kinetics of poly-disperse particles in a coaxial electrode system, where a previous charging model considering ion concentration and particle mobility was adopted (Alisoy et al, 2010). Alonso (2009) investigated and compared the effects of four different initial mixing state on the charging process, which is often ignored by other researchers.…”

Section: (2) Numerical Modelling Of Unipolar Chargersmentioning

confidence: 99%

Developments in Unipolar Charging of Airborne Particles: Theories, Simulations and Measurements

Zheng

Chang

Yang

et al. 2016

Aerosol Air Qual. Res.

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Charging of airborne particle is an important process in both scientific studies and industrial applications, of which the unipolar charging takes up the major part due to higher charging efficiency. In order to understand the charging mechanism of airborne particles, accordingly to predict the efficiency of unipolar chargers, different theoretical models have been proposed and investigated in all regimes. Numerical techniques have been also adopted by researchers to analyze the charging process of airborne particles and thus to model the unipolar chargers. On the other hand, with the advent and application of various measuring techniques, the electric charges measurement of airborne particles was made possible for researchers. In this work, we mainly present a summary of these models, numerical techniques and experimental results on unipolar charging in all regimes, as well as the recent developments in the design of unipolar chargers, trying to briefly overview the development in this research field.

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A space charge motion simulation with FDTD method and application in negative corona electrostatic field analysis

Alagöz¹,

Alisoy²,

Alagoz³

et al. 2012

Applied Mathematics and Computation

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An analysis of corona field charging kinetics for polydisperse aerosol particles by considering concentration and mobility

Cited by 6 publications

References 15 publications

Efficient Charging of Aerosol Nanoparticles by Corona-needle Charger with Improved Design for Printing of Metallic Microstructures

Efficient Charging of Aerosol Nanoparticles by Corona-needle Charger with Improved Design for Printing of Metallic Microstructures

Developments in Unipolar Charging of Airborne Particles: Theories, Simulations and Measurements

A space charge motion simulation with FDTD method and application in negative corona electrostatic field analysis

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