• 제목/요약/키워드: Discharge voltage characteristic

검색결과 181건 처리시간 0.032초

연면방전 플라즈마를 이용한 톨루엔 처리에 관한 연구 (Toluene Removal Using Surface Discharge Induced Plasma Chemical Process)

  • 부문자;봉춘근;김신도
    • 한국대기환경학회지
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    • 제13권4호
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    • pp.297-305
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    • 1997
  • The experimental study by use of SPCP was fulfilled to remove toluene emitted from various industrial processes. First of all, discharge characteristic was experimented as the change of applied voltage and frequency. Then toluene removal characteristic was tested with the analysis of by-products. As a result, optimum electrical discharge condition was from 20.0 kHz to 25.0 kHz of frequency and from 3.5 kV to 4.0 kV of voltage range. The variation of applied voltage had a more important effect on the removal characteristic of toluene than the frequency variation. The toluene removal efficiency was proportioned to ozone concentration and retention time on discharge plate. It was dropped as increase of toluene concentration, but total treated volume of tolene per power consumption was high. The decomposed toluene was transformed to $CO, CO_2$ and particulates, and the rate of transformation to particulates was higher than CO and $CO_2$ at high toluene concentration. Particulates were increased from 0.017 $\mum$ to 0.3 $\mum$ range of size distribution.

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용량이행형 방전여기 엑사이머 레이저의 전압 전류 특성 (The Characteristic of voltage and Current in Discharge-pumped Excimer Laser with Charge Transfer Type)

  • 정재근;최부연;이주희
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1987년도 정기총회 및 창립40주년기념 학술대회 학회본부
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    • pp.405-407
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    • 1987
  • We calculated the discharge resistance, which is determined by plasma dynamics, of the discharge pumped excimer lasers with charge-transfer type. And investigated the characteristic of discharge voltage and current using EMIP.

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Xe형 평면광원의 방전 전극 구조 변화에 따른 전자계 특성 (The electro-magnetic properties of Xe type flat lamp by discharge electrode structure)

  • 양종경;백광현;이종찬;최용성;박대희
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2005년도 춘계학술대회 논문집
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    • pp.15-18
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    • 2005
  • As a display becomes large recently, Acquisition of high luminance and Luminance uniformity is becoming difficult in the existing CCFL or EEFL backlight system. So, study for a performance enhancement has enforced. but lamp development of flat type is asked for high luminance and a luminance uniformity security in of LCD and area anger trend ultimately. In this paper, we changed a tip shape of an electrode for production by the most suitable LCD backlight surface light source, and confirmed discharge characteristic along discharge gas pressure and voltage, and confirmed electric field distribution and discharge energy characteristic through a Maxwell 2D simulation. Therefore the discharge firing voltage characteristic showed a low characteristic than a rectangular type and round type in case of electrode which used tip of a triangle type, and displayed a discharge electric current as a same voltage was low.

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Xe 플라즈마 평판 램프의 전기적 특성 (Electricla Properties of Xe Plasma Flat Lamp)

  • 최용성;조재철;홍경진;이우선;이경섭
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2006년도 추계학술대회 논문집 광주전남지부
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    • pp.35-38
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    • 2006
  • As a display becomes large recently, Acquisition of high luminance and Luminance uniformity is becoming difficult in the existing CCFL or EEFL backlight system. So, study for a performance enhancement has enforced. but lamp development of flat type is asked for high luminance and a luminance uniformity security in of LCD and area anger trend ultimately. In this paper, we changed a tip shape of an electrode for production by the most suitable LCD backlight surface light source, and confirmed discharge characteristic along discharge gas pressure and voltage, and confirmed electric field distribution and discharge energy characteristic through a Maxwell 2D simulation. Therefore the discharge firing voltage characteristic showed a low characteristic than a rectangular type and round type in case of electrode which used tip of a triangle type, and displayed a discharge electric current as a same voltage was low.

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Characteristic of High Voltage Aging in AC PDPs

  • Lee, Yong-Han;Kim, Oe-Dong;Ahn, Byoung-Nam;Choi, Kwang-Yeol;Kim, Sung-Tae
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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    • pp.932-934
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    • 2006
  • A relationship between discharge delay time and the aging method were investigated: A-Y (Address electrode - Scan electrode) aging and conventional X-Y(Common electrode - Scan electrode) aging with the variation of sustain voltage beyond self-erasing discharge. Although A-Y aging decreases discharge delay time, it has several drawbacks like non-uniformity of discharge, degradation of luminous efficiency and a color temperature. In a conventional aging condition which is carried out near the mid-margin voltage, discharge delay time is short in low voltage and high frequency condition. As an alternative to conventional voltage aging, high voltage aging is suggested which is carried out at self-erasing sustain voltage region. High voltage aging shows lower discharge delay time and fast aging speed than conventional voltage aging.

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Xe 플라즈마 평판형 광원의 전극 구조에 따른 전기.자기적 특성 (Electrical and Electromagnetic Characteristics of Xe Plasma Flat Lamp by Electrode Structure)

  • 최용성;문종대;이경섭;이상헌
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2006년도 영호남 합동 학술대회 및 춘계학술대회 논문집 센서 박막 기술교육
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    • pp.82-85
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    • 2006
  • As a display becomes large recently, Acquisition of high luminance and Luminance uniformity is becoming difficult in the existing CCFL or EEFL backlight system. So, study for a performance enhancement has enforced. but lamp development of flat type is asked for high luminance and a luminance uniformity security in of LCD and area anger trend ultimately. In this paper, we changed a tip shape of an electrode for production by the most suitable LCD backlight surface light source, and confirmed discharge characteristic along discharge gas pressure and voltage, and confirmed electric field distribution and discharge energy characteristic through a Maxwell 2D simulation. Therefore the discharge firing voltage characteristic showed a low characteristic than a rectangular type and round type in case of electrode which used tip of a triangle type, and displayed a discharge electric current as a same voltage was low.

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자외선.오존 살균소독장치의 유체시뮬레이션 및 대장균 제거 특성 (The Hydraulic simulation and removal characteristics of Escherichia Coli for Ultraviolet rays.Ozone sterilization apparatus)

  • 황인아;이현수
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 학술대회 논문집 전문대학교육위원
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    • pp.169-172
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    • 2005
  • The simulation of Hydraulic pressure distribution of discharge tube with globular beads and the removal characteristic of Escherichia coli by the discharge tube with globular beads were estimated. The removal characteristic of Escherichia coli was related to the input voltage because the electric field is increased according to input voltage. As the passing amount of test water in discharge tube is increased, the removal ratio of Escherichia coli was increased because passing numbers of electric field section is increased.

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구형 $SiO_2$를 갖는 방전관의 수중 세균제거특성 (Removal characteristic of Escherichia coli for Discharge tube with globular $SiO_2$)

  • 이동훈;박홍재;박재윤
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2003년도 추계학술대회 논문집 Vol.16
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    • pp.546-549
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    • 2003
  • This paper was shown removal characteristic of escherichia coli for discharge tube with globular $SiO_2$. At the result of the removal characteristic experiments of escherichia coli using the discharge tube with globular $SiO_2$, because the electric field is also increased when input voltage is increased, the removal characteristic of escherichia coli was appeared relation connection to input voltage. If a passing number of test water in discharge tube is increased, the removal ratio of escherichia coli is increased because passing number of electric field section is increased. When diameter of globular $SiO_2$ is increased, the removal time of escherichia coli is to be decreased because dielectric polalization of globular dielectric($SiO_2$), Also, the removal ratio of escherichia coli of the discharge tube with globular dielectric($SiO_2$) is appeared higher than the removal ratio of the discharge tube without globular dielectric($SiO_2$).

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구형 지르코니아를 갖는 수방전관의 수질성분변환 및 세균제거특성 (Removal characteristic of Escherichiacoli and water property conversion for Discharge tube with globular $ZrO_2$)

  • 이동훈;박홍재;박재윤
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2003년도 추계학술대회 논문집 Vol.16
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    • pp.550-553
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    • 2003
  • This paper was shown water properly conversion and removal characteristic of escherichia coli for discharge tube with $ZrO_2$ beads. At the result of the removal characteristic experiments of escherichia coli using the discharge tube with $ZrO_2$ beads, because the electric field is also increased when input voltage is increased, the removal characteristic of escherichia coli was appeared relation connection to input voltage. And if a passing number of test water in discharge tube with $ZrO_2$ beads is increased, the removal ratio of escherichia coli is to be increased because passing number of electric field section is increased. And if diameter of $ZrO_2$ beads is increased, the removal time of escherichia coli is to be decreased because dielectric polalization of $ZrO_2$ beads. Also, the removal ratio of escherichia coli of the discharge tube with $ZrO_2$ beads. is appeared higher than the removal ratio of the discharge tube without $ZrO_2$ beads. And a salutation point of ozone and $H_2O_2$ generation density inner water was appeared near 60[min].

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H-방전을 이용한 무전극 방전 램프의 특성 (Properties of the Electrodeless Discharge Lamp Using H-Discharge)

  • 김태현;박동화
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1998년도 하계학술대회 논문집 E
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    • pp.1708-1710
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    • 1998
  • In this study, several experiment is executed to analyze properties of Electrodeless Discharge Lamp using H-Discharge. 1. The operating frequency of this lamp is $2.45{\sim}2.65$[MHz] 2. The color of light is mild-white. And, it is shifted in the direction of red in low temperature. 3. In ambient temperature under $10^{\circ}C$, luminous efficiency is decreased precipitously. Therefore, research for improvement discharge-characteristic in low temperature need. 4. Discharge-characteristic stable between $160{\sim}240$[V]. And, luminous output is inverse proportion to coil-voltage. 5. When input-voltage is decreased continuously unstable section exist.

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