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2003 Fiscal Year Final Research Report Summary

Study on high concentration ozonizer using barrier discharges of rare gas -oxygen mixture

Research Project

Project/Area Number 14550263
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 電力工学・電気機器工学
Research InstitutionNagoya Institute of Technology

Principal Investigator

KIMURA Takashi  Nagoya Institute of Technology, Graduate school of Engineering, Associate Professor, 工学研究科, 助教授 (60225042)

Project Period (FY) 2002 – 2003
KeywordsOzone / Rare gas / Oxygen / Ozone production efficiency / Barrier Discharge / Fluid Model / Simulation
Research Abstract

Ozone production efficiency in atmospheric dielectric barrier discharges of oxygen-rare gas mixture and pure oxygen was experimentally investigated, and the discharge properties of these discharges were also investigated using one-dimensional fluid model.
The rare-gas-content dependence of ozone production efficiency for various discharge gaps was investigated using a 60 Hz power source. The efficiency measured for the discharge gap shorter than 1.0 mm decreased with the increase in rare-gas content, while the efficiencies in the cases of Ne and Ar Mixtures for the gap of 3 mm increased with the content until the content reached 80%. The ratios of the efficiency at 80% content to that at pure oxygen were 1.4 for Ne and 1.1 for Ar.
The ozone production efficiency was investigated in a planar disk type barrier discharge of oxygen using a time-modulated power supply. The efficiency measured using the time-modulated power supply, which was a decrease function of the power injected into the d … More ischarge, was higher than that measured using a continuous. wave power supply. The maximum improvement of the efficiency reached about 20%.
The influence of oxygen addition on discharge properties of high-pressure Xe dielectric barrier discharges was investigated using a one-dimensional fluid model. With the increase in the oxygen content, the waveform of the discharge current during a half cycle was changed from sharp and shallow pulses to only a sharp current pulse. The electronegativity in a discharge gap, which depends on the oxygen content, was varied spatially and temporally. despite of small addition of oxygen, dominant positive and negative charged species were change from Xe^+_2 ions and electrons to O^+_2 and O^-ions.
A self-consistent one-dimensional fluid model of low-frequency oxygen barrier discharges at atmosphereic pressure was developed to investigate the discharge structure. Mode 1 results indicated that the type of the discharges may be multiple Townsend-like, because the maximum of the charged species density is lower than 10^<10> cm^<-3>. The calculated ozone production efficiency was compared with the experiment, showing the reasonable agreement. Less

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] T.Yoshigoe, T.Kimura, A.Oda: "Ozone formation efficiency in barrier discharge of oxygen-rare gas mixture"The 20th Symposium on Plasma Processing. 20. 187-188 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Kimura, T.Yoshigoe, A.Oda: "Ozone Production Efficiency in Atmospheric Dielectric Barrier Discharge of Oxygen/Rare-Gas Mixture"Japanese Journal of Applied Physics. 42. 5313-5314 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 小田昭紀, 木村高志: "Xe/O_2ガス混合バリア放電のモデリング-O_2ガス添加のXeバリア放電特性への影響-"電学論 A. 123. 1253-1258 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Kimura, Y.Hattori, A.Oda: "Ozone formation efficiency in oxygen barrier discharges using time-modulated power supply"The 21th Symposium on Plasma Processing. 21. 278-279 (2004)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Oda, Y.Hattori, T.Kimura: "Analysis of low frequency O_2 barrier discharges using a one-dimensional fluid model"The 21th Symposium on Plasma Processing. 21. 280-281 (2004)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Yoshigoe, T.Kimura, A.Oda: "Ozone formation efficiency in barrier discharge of oxygen -rare gas mixture"The 20th Symposium on Plasma Processing. 20. 187-188 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Kimura, T.Yoshigoe, A.Oda: "Ozone production efficiency in atmospheric dielectric barrier discharge of oxygen / rare-gas mixture"Japanese Journal of Applied Physics. 42. 5313-5314 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Oda, T.Kimura: "Modeling of dielectric barrier discharges in Xe/O_2 gas mixture"IEEJ Trans. FM. 123. 1253-1258 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Kimura, Y.Hattori, A.Oda: "Ozone formation efficiency in oxygen barrier discharges using time-modulated power supply"The 21th Symposium on Plasma Processing. 21. 278-279 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Oda, Y.Hattori, T.Kimura: "Analysis of low frequency O_2 barrier discharges using a one-dimensional fluid model"The 21th Symposium on Plasma Processing. 21. 280-281 (2004)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2005-04-19  

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