The characteristics of ionic wind velocity for the model electrostatic precipitator

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It is estimated that the collecting characteristics of particles for an electrostatic precipitator (EP) is influenced by the ionic wind (IW) which caused by the corona discharge. In order to study this influences, IW velocity at the model EP which has the corona discharging field was measured by a Thermistor-anemometer. The characteristics of the maximum of IW velocity and the modes of IW velocity distribution were obtained through these measurements. In this measurement two types of EP were used; wire to net type electrode and needle to net type electrode. The results of these experiments are as follows. The IW velocity is influenced by the form of discharging electrode, the polarity of discharging electrode and the temperature of environmental gas. The IW velocity is comparably high as the gas velocity in EP and through this fact it is said that IW influences on the phenomena of collecting particle for EP.

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