Efficiency of ozone generation by atmospheric pressure air DBD using different pulsed voltage sources

摘要

In synthetic air at atmospheric pressure, four different power sources have been used to create a discharge in a DBD reactor. The chemical efficiency has been monitored by measuring ozone production. The critical parameter in this particular experiment is the methodology and the accuracy in the power measurement. The delay between the voltage and the current signals delay has been compensated carefully. A discharge with a high reduced electric field is expected to be more efficient, according to simulations using electron-molecule collision cross-sections. This is confirmed in measurements at a given frequency (1800 Hz) in which we observe that the efficiency of ozone generation increases by 10 to 50% when the risetime and pulse duration are shortened.