Nanoparticle Charging in a Twin Hewitt Charger
Source abstract
Abstract
A new unipolar charger for aerosol nanoparticles has been developed. In this twin Hewitt charger two corona discharge zones are connected by a charging zone where the nanoparticle aerosol flows. Ions move into the charging zone alternating from each corona discharging zone by means of a square-wave voltage. The operation parameters of the device have been experimentally investigated at standard conditions with the goal to optimize the extrinsic charging efficiency in N2 carrier gas. It has been found that there exists an optimal length of the charging channel for each gas flow rate through the charger which minimizes losses of charged particles and at the same time having a sufficient large n iont-product. Extrinsic charging efficiencies of some 30% for particles with a diameter of 10 nm are obtained.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aerosol Filtration and Electrostatic Precipitation · Electrohydrodynamics and Fluid Dynamics · Coagulation and Flocculation Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (10)
Show source-provided references
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