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Abstract
This paper examines the effects of an applied electric field on collection efficiency by a charged droplet for dust particles in charged droplet scrubbers (CDS) that change the direction of the electric field, with and without considering the driving of the droplet as a collector by the electric field. From the calculated results, the driving of the droplet by the electric field has a large effect on collection efficiency in CDS. For slightly charged or neutral particles, the increase of droplet velocity by the electric field increases the collection efficiency. For well-charged particles, the increase of droplet velocity by the electric field decreases the collection efficiency.