How Electrostatic Precipitators Works...
As air enters the electrostatic precipitator, the particles pass
through an electrical field that gives an electrical charge
to the particles. The
charged particles pass through a series of alternately charged collector
plates. Particles are repelled by plates with the same polarity and
attracted to plates with opposite polarity — similar to how a powerful
magnet works.
Dual-stage electrostatic precipitators include
two parts: the charging and the collecting sections. In the charging
section, the incoming smoke, grease, mist, and other particulates pass by
ionizer wires which impart a positive electrical charge to these
contaminants. The positively charged contaminants are then drawn through the
collection section which contains a secondary electrical field with
negatively charged aluminum plates. Since opposite charges attract, the
positively charged contaminants collect on the negatively charged aluminum
plates, removing them from the air stream.
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