유전체 장벽 방전내에서 오존발생 특성

Ozone Generation Characteristics in Dielectric Barrier Discharge

  • 이형호 (한국전기연구소 전기물리그룹) ;
  • 조국희 (한국전기연구소 전기물리그룹) ;
  • 김영배 (한국전기연구소 전기물리그룹) ;
  • 서길수 (한국전기연구소 전기물리그룹)
  • 발행 : 2000.12.01

초록

The dielectric barrier discharge(DBD) is a common method to create a nonthermal plasma in which electrical energy is used to create electrons with a high average kinetic energy. The unique aspect of dielectric barrier discharges is the large array of short lifetime(10ns) silent discharges created over the surface of the dielectric. A silent discharge is generated when the applied voltage exceeds the breakdown voltage of the carrier gas creating a conduction path between the applied electrode and grounded electrode. As charge accumulates on the dielectric, the electric field is reduced below the breakdown field of the carrier gas and the silent discharge self terminates preventing the DBD cell from producing a thermal arc. In fact, the most significant application of dielectric barrier discharges is to generate ozone for contaminated water treatment. Therefore, experiments were perfomed at 1∼2[bar] pressure using a coaxial geometry single dielectric barrier discharge for ozone concentrations and energy densities. The main result show that the concentration and efficiency of ozone are influenced by gas nature, gas quantity, gas pressure, supplied voltage and frequency.

키워드

참고문헌

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