Investigation of pulsed micro-discharges and ozone production by dielectric barrier discharges

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Abstract

In this work, pulsed micro-discharges produced by dielectric barrier discharges (DBDs) with a sub-millimeter gap were electrically-characterized under ac voltage at 100 Hz and at 5 kHz. Ozone production was investigated for different discharge gap lengths and pressures. The aim of the work was to understand the statistics of filamentary current pulses and their relationship to the reduced electric field and the ozone production efficiency. A transient sinusoidal voltage of 200 cycles was employed to reduce the heating effects in the ozone-synthesis process. It was shown that the amplitude of the filamentary current pulses measured over 200 voltage cycles conformed to a Gaussian distribution. The mean filamentary current and ozone production efficiency measured at 100 Hz and at 5 kHz were almost the same. The ozone production efficiency was found to increase with increasing pressure from 1 bar to 2 bar, and the gap length from 0.2 mm to 0.5 mm. The maximum ozone production efficiency achieved in the work was 217 g/kWh, with a gap length of 0.5 mm, 2.0 bar absolute pressure, and an applied voltage of 5.5 kV at 5 kHz
Original languageEnglish
Title of host publicationProceedings of IEEE International Pulsed Power Conference 2015
Place of PublicationPiscataway, NJ
PublisherIEEE
Number of pages4
ISBN (Print)9781479984039
DOIs
Publication statusPublished - 20 Jun 2015
EventPulsed Power Conference 2015 - Hilton Austin Hotel., Austin, United States
Duration: 30 May 20154 Jun 2015

Conference

ConferencePulsed Power Conference 2015
CountryUnited States
CityAustin
Period30/05/154/06/15

Keywords

  • micro-discharges
  • ozone
  • DBD

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