Energy Saving Effect of High Electric Field on an Electrostatic Precipitator for Air Borne Particle

In this article, an electrostatic precipitators (ESP) with high electric field, which does not use corona discharge, was investigated. The ESP had a parallel plate configuration composed of a high voltage application plate electrode and grounded plate electrode with a gap of 5 mm. The electrode leng...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2020-11, Vol.56 (6), p.6990-6996
Main Authors: Zukeran, Akinori, Inoue, Shogo, Ishizuka, Daiki, Ito, Kohei, Kaneko, Takayuki
Format: Article
Language:English
Subjects:
Air borne particle
Atmospheric measurements
Collection
collection efficiency
Corona
Discharges (electric)
Efficiency
Electric corona
Electric fields
Electrodes
electrostatic field
electrostatic precipitator (ESP)
Electrostatic precipitators
High voltages
High-voltage techniques
Parallel plates
Particle measurements
Power demand
Precipitators
saving energy
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Summary:In this article, an electrostatic precipitators (ESP) with high electric field, which does not use corona discharge, was investigated. The ESP had a parallel plate configuration composed of a high voltage application plate electrode and grounded plate electrode with a gap of 5 mm. The electrode length was between 150 and 450 mm. The air was flowed at the gas velocity between 0.5 and 5 m/s in the ESP by a fan. A voltage up to 12.5 kV was applied to the high voltage application electrode, whereby the electric field intensity of 25 kV/cm was generated between the electrodes. The particle concentration in the air for the particle size between 0.3 and 5  μ m was measured to calculate the collection efficiency. The collection efficiency in a conventional two-stage type ESP was also measured, and compared to the result in the ESP with high electric field. As a result, the collection efficiency at the electrode length of 450 mm was 77.6% at 12.5 kV, when the ratio of the input power was lower than 0.33 W/(m 3 /s), in the ESP with high electric field. On the other hand, the collection efficiency in the conventional ESP was 65.6% or 82.0% at the input power of 14.2 W/(m 3 /s) or 24.8 W/(m 3 /s). Therefore, it is revealed that the ESP with high electric field is effective for energy saving.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2020.3020788