High cleaner air delivery rate performance of an two-stage ESP air cleaner for Indoor Air Quality with negligible ozone emission by carbon fiber ionizers

摘要

A novel ESP type air cleaner with positive polarity was developed using an ionization stage with 16 carbon fiber ionizers in each channel, and a collection stage with parallel metallic plates. Its clean air delivery rate was measured by Korean standard test method using 0.3 μm KCl particles, changing applied voltages and flow rates of the air cleaner. The experimental results showed that its CADRs were changed from 7.9 to 12.1 m~3/min when applied voltage to ionizers (6 to 8 kV) and collection plates (-5 to -7 kV), and flow rate (10 to 20 m~3/min) were varied. In particular, the air cleaner achieved a CADR of 12.1 m~3/min with applied voltage of 8 kV to the ionization stage, and of - 6kV to the collection stage at 18 m~3/min, while emitting significant low ozone with a maximum value of 5.4 ppb for over 12 hours of continuous operation.