What is an electrostatic precipitator?
Electrostatic Precipitators, also known as electronic air cleaners, operate on electrostatic attraction to a collecting section called a filter cell. This electrostatic filter cell provides a charge to the airborne particle that is brought through the filter cell by ionizing wires that are located in the front portion of the cell. The collecting plates are negatively charged oppositely the positively charged airborne particle sticks to the collecting surfaces. Electrostatic filters work very well with the smallest of particles. Electrostatic air cleaners become less efficient at purifying the air as the collecting cell becomes dirty. The electronic collecting cell must be cleaned regularly to maintain maximum efficiency.
An electrostatic precipitator is air pollution control device used to separate solid particulate matter from a contaminated air stream. Contaminated air flows into an ESP chamber and is ionized by electron emitting electrodes; also known as the corona chamber. The suspended particles are charged by the electron field and migrate to a collection plate. Accumulate particulate matter is removed from the collection plates at periodic intervals by rapping or hitting the plates with rappers (mallets type hammers). Heavy particles fall to the base of the ESP where hoppers hold the removed particles for disposal. There are typically three types of ESP units: dry negative corona units, wet negative corona units and wet positive corona units. Dry negative corona units have inherently better voltage/current characteristics, are utilized more frequently and will be the main focus of this website; however, wet negative corona units will be discussed for their applicative differences. The following
This is the latest state-of-art technology in air cleaning. A very high voltage is applied to the precipitator plates to enable them to attract the dust particles which have already been imparted an opposite charge. The Electrostatic Precipitator of the Air Purifier model AF-301 has a unique design which gives it the capability to remove particles as small as 0.01 micron. This technology is far superior to the HEPA filtration because the Electrostatic Precipitator never gets choked with use. Moreover it is very cost saving since there is no part which needs periodic replacement.
