Influence of Power Modulation on Ozone Production Using an AC Surface Dielectric Barrier Discharge in Oxygen

0347447 - ÚFP 2011 RIV US eng J - Journal Article
Šimek, Milan - Pekárek, S. - Prukner, Václav
Influence of Power Modulation on Ozone Production Using an AC Surface Dielectric Barrier Discharge in Oxygen.
Plasma Chemistry and Plasma Processing. Roč. 30, č. 5 (2010), s. 607-617. ISSN 0272-4324. E-ISSN 1572-8986
R&D Projects: GA ČR(CZ) GA202/09/0176
Institutional research plan: CEZ:AV0Z20430508
Keywords : Ozone * Surface DBD * Oxygen * Production efficiency
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 1.798, year: 2010
http://www.springerlink.com/content/28539775w5243513/

The measurements of electro-optical discharge characteristics and concentration of produced ozone were performed to evaluate the efficiency of ozone production in an AC surface dielectric barrier discharge (SDBD) in pure oxygen at atmospheric pressure. The discharge was driven in an amplitude-modulated regime with a driving AC frequency of 1 kHz, variable discharge duty cycle of 0.01–0.8 and oxygen flow rate of 2.5–10 slm. We observed asymmetric SDBD behaviour as evidenced by the variation in the ratio of the OI/O2+ emission intensities registered during the positive/negative half-periods and complemented by the transferred charge measurements through the Lissajous figures. We also found a strong dependence of O3 concentration on the discharge duty cycle. The highest calculated ozone production yield reached 170 g/kWh with a corresponding energy cost of about 10 eV/molecule when combining the lowest inspected duty cycle with the lowest AC high voltage amplitude.
Permanent Link: http://hdl.handle.net/11104/0188220