Ozone Production with Dielectric Barrier Discharge from Air: The Influence of Pulse Polarity

ABSTRACT

This research aims to study the effects of different pulse modes of the power supply on ozone production from air. Single positive, negative as well as the bipolar voltage pulses (positive–negative and negative–positive) with a repetition rate of 300 Hz have been applied to coaxial dielectric barrier discharge arrangement. Results reveal that at fixed specific input energy (SIE), which is defined as the ratio of power to gas flow rate, the ozone generation efficiencies for different pulse modes are in the sequence of positive > positive–negative > negative–positive > negative, and the difference between positive and positive–negative pulse becomes considerable with SIE higher than 500 J/L. Results also reveal that the maximum NO₂ concentration is obtained at 400 J/L. Moreover, utilizing bipolar pulse can reduce N₂O production with SIEs higher than 250 J/L and hinder NO₂ production with SIEs higher than 350 J/L.

KEYWORDS:

• Dielectric barrier discharge
• nitrogen oxides
• ozone generation
• pulse modes
• specific input energy

Declaration of interest

No potential conflict of interest was reported by the authors.

Additional information

Funding

This research was supported by the National Natural Science Foundation of China [Grant No. 51776185] and Zhejiang Provincial Natural Science Foundation [LR16E060001]. The author Dingkun Yuan would like to thank the financial support from China Scholarship Council [No. 201706320234]