• Proceedings of the KIEE Conference
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• 2001.07c
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• pp.1626-1628
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• 2001

본 연구는 AC 전원을 인가하여 좁은 전 극간격에서 고수율을 얻을 수 있는 연면방전방식 (Surface Discharge type)과 DC 전원을 인가하여 넓은 전극간격에서 저수율을 가지는 DC방전방식(DC Discharge type)을 중첩방전 할 수 있도록 중첩방전관을 설계 제작하여 각각 독립적인 방전방식을 적용하였을 때의 방전전압, 방전전류, 방전전력 및 오존생성농도를 실험적으로 조사하고, 두 방전방식을 동일공간에 중첩방전하여, 위 실험을 반복하고 중첩방전이 동일방전공간에 투입에너지 밀도를 높임으로써 방전특성 및 오존생성 특성을 비교 분석하였다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.13 no.4
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• pp.32-37
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• 1999

The superposing effect of SPCP(Surfoce Induced Plasma Chemical Process) and corona discharge has been studied for rerroval of NOx from industrial flue gases. NOx rermval rates by SPCP, corona discharge and superposing discharge were monitored and compared. Parameters were the concentration and the flow rate of gas, frequency and the type of discharge. Experirrental results showed that NOx removal rate by sUIffPOSing discharge was 10-15[%] higher than that by the other two modes. The higher NOx. rermval rate was observed with the lower frequency of upper electrode in the combined reactor and with the higher frequency of lower electrode. 'The maximum obtainable NOx. rerroval rate by SPCP (18 [W]) and corona discharge (8.5 [W]) was 80[%] and 10[%], respectively. With the combination of the two modes, however, 90[%] of NOx removal rate was observed with the discharge power of 14 [W].14 [W].

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.19 no.5
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• pp.87-93
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• 2005

In order to develope high concentration$\cdot$yield ozonizer, superposed discharge type ozonizer using overlap of silent discharge and internal electrode of mesh type has been designed and manufactured. It consists of three electrodes(central electrode, internal electrode and external electrode) and double gaps(gap between central electrode and internal electrode, gap between internal electrode and external electrode). Therefore, ozone is generated by overlapping silent discharges generated between the gaps respectively for which the AC high voltages applied to the internal electrode and the external electrode has a $180{[^\circ]}$ phase difference and for which the central electrode is a ground Ozone generation characteristics proportional to mesh of internal electrode by increasing of discharge electrode and controlling of discharge power density. As a result, the in maximum ozone concentration, generation, and yield can be obtained 17,720[ppm], 5.4[g/h], and 205[g/kwh] respectively.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.19 no.5
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• pp.60-67
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• 2005

The superposed discharge type ozonizer of high ozone concentration using vacuum discharge tube has been designed and manufactured. It consists of three electrodes(central electrode, internal electrode, and external electrode) and one discharge gap(discharge gap between internal electrode and external electrode), is a superposed silent discharge type ozonizer for which the AC high voltages applied to the central electrode within discharge tube and the internal electrode has a $180{[^\circ]}$ phase difference and for which the external electrode is a ground. Ozone is generated by overlapping silent discharge between central electrode and external electrode, and silent discharge between internal electrode and external electrode. At the moment, discharge characteristics and ozone generation characteristics were investigated in accordance with vacuum of discharge tube, discharge power of ozonizer, and quantity of supplied oxygen gas. In consequence, high ozone concentration can be obtained 8840[ppm].

• The Transactions of the Korean Institute of Electrical Engineers C
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• v.52 no.2
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• pp.91-97
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• 2003

In addition to its strong oxidizing power, the ozone has definite advantages over other commercial oxidants, namely, no undesirable by- products or residues are formed. With growing interest in the improvement of the ozone production in the industrial fields, many types of ozonizer using the electrical discharges have been proposed for the higher efficiency and the higher Performance at atmospheric Pressure. Among them, a superposition of different type discharges has been proposed. Especially, since the improvement for the low efficiency of dc discharge and narrow gap of surface discharge is required, a do and an at voltage are applied to same reaction space (or volume) to increase energy density at the same space. An investigation was focused on the superposition with a dc (streamer) corona and 3 surface discharge. This paper describes the investigation results on fundamental ozone generation characteristics by this superimposed discharge.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.1884-1885
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• 2007

DC 80[V]의 주 전원에서의 방전 가공은 가공 시 서보계의 헌팅상태가 자주 발생되기 때문에 방전상태가 불안정 하였다. 본 연구에서는 DC 300[V]의 보조 전원을 주 전원과 중첩한 결과, 방전 개시 전압이 높게 됨으로써 서보계의 헌팅상태가 감소하여 방전이 매우 안정하게 되어 가공 능률을 향상하였다.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2000.06a
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• pp.84-89
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• 2000

생산 현장뿐만 아니라 일상생활의 여러 곳에서 환경을 악화시키는 유해물질이 배출되어, 그를 위한 대책이 초미의 관심사로 되어있다. 종래 다종다양한 유해물질 중에서 일부의 기체상의 물질에 대해서는 그 성질에 따라 연소나 촉매를 사용한 화학적 처리 활성탄 흡착 등의 물리적 처리가 실시되어 왔지만 근년 대기중에서의 방전현상에 수반하여 발생하는 플라스마에 의한 화학반응을 사용한 처리방식이 많은 연구기관에서 시도되고 그 중에는 종래 방식으로는 곤란했던 물질(예를 들면 프론가스)의 분해ㆍ무해화 처리로 실용화된 예도 있다. (중략)

• Proceedings of the KIPE Conference
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• 2001.07a
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• pp.604-607
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• 2001

본 논문은 새로운 타입의 중첩형 오존발생기를 제안하였다. 방전시 방전실 내의 과도한 방전전력은 온도상승을 가져온다. 이러한 열로 인해 오존분해반응이 생성되어 오존생성수율이 나빠진다. 제안한 전원장치는 잉여전력을 재충전하여 열의 발생을 억제하고 오존분해반응을 줄일 수 있음을 실험으로 검증하였다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.14 no.2
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• pp.59-67
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• 2000

In this paper, an ozonizer, which can supply 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 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 flow rate of supplied gas (O2). 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 value 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.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.13 no.2
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• pp.71-79
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• 1999

In this paper, high concentration.yield trulti-discharge type ozonizer( MDO ) of new discharge type using superposed silent discharge was designed and manufactured MDO can be consisted with 3 kind of superposed silent discharge type ozmizer( SDO ) in accordance with power supply method that suwlying power, which has $180[^{\circ}]$ phase difference, to 3 electrodes and amble gap. At the rroment, discharge characteristics and ozone generation characteristics of each SDO were investigated in accordance with quantity of suwlied gas, the number of SDO, and the shapes of each SDO. In result, ozone generatioo characteristics of 17185[ppm] and 783[g/kWh] were obtained, and when ozone of 17185[ppm] was in contact with dyeing water waste, decolorization characteristics was excellent, so it confinred that MDO could be used as water environment improvement facility.cility.