The effect of corona wire heating and geometry on ozone generation in a negative ion air cleaner

The effect of corona wire surface temperature and geometry on the ozone generation and negative ion emission in a negative ion air cleaner is studied experimentally. The results show that corona wire heating can suppress the ozone generation; however, this increases the corona current. A trade-off effect of corona wire surface temperature and corona current exists; the specific value of ozone concentration against negative ion current is affected by the wire surface temperature and geometry and decreases with an increase in wire surface temperature, the size of grounded screen holes and electrodes space and a reduction in wire diameter.