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Design and performance of a small-scale electrostatic precipitator.
A&WMA 100th Annual Conference & Exhibition, Pittsburgh, Pennsylvania, June 26-29, 2007. Pittsburgh, PA: Air & Waste Management Association, 2007 Jun; :
Electrostatic precipitators were invented a century ago and are among the most common particulate emissions control devices. The fundamental operation of an electrostatic precipitator is a two step process, of first charging incoming particles with an electrical corona current and then collecting them on charged surfaces. The development and improvements to ESP's have been well reviewed in other references. Traditionally, electrostatic precipitators have been used to treat very large flows of industrial exhaust sources like cement kilns, coal-fired boilers, or copper smelters. Recently, however, small-scale experimental and commercial electrostatic precipitators have been developed for purposes like removing particles from diesel exhaust, particle sampling, and household air purification. Use of small-scale precipitators, either alone or incorporated with traditional fibrous filtration, is growing with the use of portable roomair purifiers. According to the Association of Home Appliance Manufacturers, three out of ten American homes have some sort of indoor air cleaner. However, a lack of data on the design and operation of small-scale electrostatic precipitators remains a problem. None of the standard electrostatic and air pollution control handbooks and manuals contains design parameters or empirical data for small-scale ESP's. The objective of this work was to investigate the fundamental electrostatic properties of small-scale ESPs. The work plan was to design, construct, and evaluate a small scale, DC-powered electrostatic precipitator. The ESP developed for this work incorporated variable internal geometry, with adjustable plate-to-plate and plate-to-wire distances. The ESP design allowed for the evaluation of different wire types and diameters, variable collection plate numbers and total areas, and different inlet flow rates.
Particulate-dust; Diesel-exhausts; Diesel-emissions; Dust-particles; Dust-inhalation; Airborne-particles; Electrostatic-precipitators; Electrostatic-filters; Air-purification; Air-quality
Air & Waste Management Association 98th Annual Conference & Exhibition, Pittsburgh, Pennsylvania, June 26-29, 2007
Southern Methodist University
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division