• 제목/요약/키워드: Silent Discharge

검색결과 102건 처리시간 0.035초

오존발생을 위한 알루미나 방전관의 무성방전특성 (Silent Disicharge Characteristics of Alumina Discharge Tube for Ozone Generation)

  • 김학규;곽동주
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2001년도 하계학술대회 논문집
    • /
    • pp.783-786
    • /
    • 2001
  • Recently deep interests and attractions have been paid on the generation of ozone, which is widely used to remove bad smell and to clear water. Silent discharge is considered as one of the most effective methods to generator ozone. In this paper, silent discharge reactors were made, waich were filled with different dielectric materials, and some silent discharge charactistics were investigated experimantaiiy.

  • PDF

오존발생을 위한 무성방전특성에 미치는 유전체의 영향 (Effect of Dielectric Materials on the Silent Discharge Characteristics for Ozone Generation)

  • 박명하;곽동주
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2000년도 하계학술대회 논문집
    • /
    • pp.628-630
    • /
    • 2000
  • Since the concept for the ozone generation using a nonequilibrium electric discharge techniques had been proposed by Siemens, some experimental and theoretical studies on the ozone generation by streamer corona discharge, surface discharge and silent discharge have been performed. In this paper some results on the discharge characteristics of the silent discharge gap with various dielectric materials were reported. Dielectric materials used in this study were pyrex glass, quartz and glass beefs with diameter of 1 mm.

  • PDF

무성방전의 중첩을 이용한 다중방전형 오존발생기의 오존생성수율 개선 (Improvement of Ozone Yield by a Multi-Discharge Type Ozonizer Using Super position of Silent Discharge Plasma)

  • 송현직;이동헌;오진훈;박성욱;서영택
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2004년도 학술대회 논문집 전문대학교육위원
    • /
    • pp.88-91
    • /
    • 2004
  • In order to improve ozone generation, we experimentally investigated the silent discharge plasma and ozone generation characteristics of a multi-discharge type ozonizer. Ozone in a multi-discharge type ozonizer is generated by superposition of a silent discharge plasma, which is simultaneously generated in separated discharge spaces. A multi-discharge type ozonizer is composed of three different kinds of superposed silent discharge type ozonizers, depending on the method of applying power to each electrode. We observed that the discharge period of the current pulse for a multi-discharge type ozonizer can be longer than that of silent discharge type ozonizer with two electrodes and one gap.Hence, ozone generation is improved up to 17185 ppm and 783 g/kwh for the superposed silent discharge type ozonizer for which an AC high voltages with a 180 phase difference were applied to the internal electrode and the external electrode, respectively, with the central electrode being ground

  • PDF

오존발생특성 향상을 위한 강유전성 알루미나 무성방전관의 개발 (Development of Silent Discharge Chamber with Al2O3 Dielectric Pellet to Improve Ozone Generation Characteristics)

  • 곽동주
    • 조명전기설비학회논문지
    • /
    • 제20권7호
    • /
    • pp.58-64
    • /
    • 2006
  • 최근 탈취, 탈색, 정수처리 및 배연가스의 정화에 많이 이용되고 있는 오존의 효과적인 발생에 많은 관심이 모아지고 있다. 전기 방전에 의한 오존 발생 방법 중 유전체 배리어 방전이 보다 낮은 전력을 소모하며, 또한 저전압 동작이 가능하여 가장 효과적인 것으로 생각되고 있다. 본 연구에서는 오존발생농도 및 에너지효율을 개선하기 위하여 알루미나 유전체 및 알루미나 유전체와 알루미나 비드를 충진한 무성방전관을 제작하여 무성방전특성을 연구하였다. 또한 오존발생특성을 무성방전특성과 연관하여 논하였으며, 특히 방전시 유전체에 축적되는 벽전하 및 소비전력특성의 관점에서 논하였다. 결과, 비드를 가진 방전관의 경우 축적되는 벽전하량은 비드가 없는 방전관에 비하여 약 2.5배 정도였으며, 발생되는 오존농도 및 에너지 수율 또한 개선되었다.

아루미나 방전관의 무성방전 및 오존발생특성 (Silent Discharge and Ozone Generation Characteristic of $Al_2O_3$)

  • 김학규;곽동주
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2002년도 하계학술대회 논문집 Vol.3 No.2
    • /
    • pp.908-911
    • /
    • 2002
  • Recently deep interests and attraction have been paid on the generation of ozone, which is widely used to remove bed smell and to clear water. In this paper the silent discharge and ozone generation characteristics of various typed discharge chambers were investigated experimentally. Dielectric of $Al_2O_3$ was embedded in the cylindrical type of discharge chamber to improve the ozone generation rate and to stabilize the silent discharge mode of operation. Discharge current and ozone concentration depend strongly on the applied voltage and frequency.

  • PDF

3상전압을 이용한 중첩방전형 오존발생기의 특성 (The Characteristics of Superposed Ozonizer using Three-Phase Voltage)

  • 김영훈;전병준;송현직;윤영대;이광식
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 1999년도 하계학술대회 논문집 E
    • /
    • pp.2259-2261
    • /
    • 1999
  • In this paper, an ozonizer, which can generate individual and superposed silent discharge, using three-phase voltage has been designed and manufactured. The ozonizer consists of 3 electrodes(Central Electrode, Internal Electrode and External Electrode) and 2 gaps(gap between Central Electrode and Internal Electrode, gap between Internal Electrode and External Electrode). Ozone is generated according to voltage supplying method to each electrode by individual silent discharge and three-phase superposed discharge. The characteristics of ozone generation were investigated with variation of discharge power and the quantity of supplied gas($O_2$). In case of individual silent discharge, the maximum values of ozone concentration, ozone generation and ozone yield were obtained between internal electrode and external electrode, and its values were 2300[ppm], 570[mg/h] and 745[g/kWh] respectively. Each maximum values was 5039[ppm], 1773[mg/h] and 851[g/kWh] respectively, when three-phase superposed silent discharge was employed. Therefore, characteristics of ozone generation with three-phase voltage are improved compared with single-phase voltage because silent discharge is generated continuously.

  • PDF

오존발생기용 강유전 펠렛 방전관의 방전 및 오존발생 특성 (The Discharge and Ozone Generation Characteristics of Ferroelctric-Pellet Reactor for Ozone Generation)

  • 박명하;곽동주
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2000년도 하계학술대회 논문집 C
    • /
    • pp.2147-2149
    • /
    • 2000
  • The silent discharge is known to be one of the most effective methods for ozone generation. In this paper. in order to improve ozone concentration and energy yield, some kind of silent discharge-type reactors with different dielectric materials were prepared. Some silent discharge characteristics of these reactors were studied and discussed.

  • PDF

주파수-진공도를 이용한 3전극-1방전간극 무성방전형 오존발생기의 오존생성 상승 효과 특성 (The Characteristics of Ozone Generation Synergy Effect for 3 Electrode-1 Discharge Gap Silent Discharge Type Ozonizer using Frequency-Vacuum)

  • 송현직
    • 조명전기설비학회논문지
    • /
    • 제19권8호
    • /
    • pp.94-101
    • /
    • 2005
  • 본 논문에서는 3개의 전극(중심전극, 내부전극 및 외부전극)과 1개의 방전간극(내부전극과 외부전극 사이의 방전간극)으로 구성된 무성방전형 오존발생기를 설계 제작하였다. 진공방전관내에 장착한 중심전극과 내부전극에 2개의 교류 고주파 고전압을 각각 인가하고 외부전극을 공통접지함으로써 방전간극에서 무성방전에 의하여 오존이 생성되는 구조이다. 이때 방전관의 진공도, 전원장치의 주파수, 방전전력 및 산소원료가스 유량 변화에 따른 방전특성과 오존생성특성을 연구 검토하였다. 그 결과 방전관의 진공도와 전원장치의 주파수가 높을수록 오존생성특성이 상승하였으며 최대 7,700[ppm], 460[mg/h] 및 70[g/kwh]의 오존을 얻을 수 있었다.

Effect of Gas Composition on Ozone Generation in Silent Discharge Process

  • Chung, Jae-Woo;Suh, Hyun-Hyo;Park, Hyun-Geoun
    • Journal of Korean Society for Atmospheric Environment
    • /
    • 제19권E4호
    • /
    • pp.169-175
    • /
    • 2003
  • The effect of gas composition on the discharge characteristics and the ozone production in silent discharge (SD) process was investigated. The major gas components, $N_2$, $O_2$, and $H_2O$ influence the discharge properties according to their relative magnitude of ionization thresholds and electron affinities. The generated amount of ozone increased with the discharge energy by increasing the electron mean energy. The higher oxygen content injected, the higher ozone produced. A small amount of water vapor significantly lowered the discharge onset voltage by the ionization threshold decreasing effect and high electrical conductivity. However, the further increase of water vapor contributes to decrease the electron density by the electron affinity The addition of water greatly reduced the ozone generation through the formation of OH radical and the catalytic ozone destruction process.

오존발생을 위한 알루미나 방전관의 전하수송 특성 (Charge Transportation Characteristics of Alumina Discharge Chamber for Ozone Generation)

  • 김병섭;이성욱;박강일;이수호;곽동주
    • 한국전기전자재료학회:학술대회논문집
    • /
    • 한국전기전자재료학회 2003년도 추계학술대회 논문집 Vol.16
    • /
    • pp.529-532
    • /
    • 2003
  • In this paper, the discharge characteristics of silent discharge chamber with 2mm and 3mm gap spacings were investigated. Dielectric of $Al_2O_3$ was embedded in the cylindrical type of discharge chamber. It was known that V-I and P-V characteristics depend strongly on the charge transportation characteristics, and in the low frequency silent discharge mode of operation, discharge voltage was always sustained to Vd, irrespective of applied voltage.

  • PDF