• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2000년도 하계학술대회 논문집
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• pp.628-630
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• 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.

• 조명전기설비학회논문지
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• 제25권9호
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• pp.80-85
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• 2011

In this paper, complex discharge type ozonizer with a screw type electrode has been designed and manufactured for environmental improvement using low power and high efficency ozoniazer. The complex discharge type ozonizer is equipped with three electrodes{central electrode(CE), internal electrode(IE) and external electrode(EE)}. Ozone of the complex discharge type ozonizer is generated by superposition of silent discharge and surface discharge in discharge space as a screw type CE and IE are respectively applied to AC high voltage of inverse-polarity has $180[^{\circ}]$ phase difference, EE is common electrode. In this time, when oxygen has been used as supplied gas, the maximum values of ozone concentration, ozone generation and ozone yield were obtained as 8,334[ppm], 3,249[mg/h] and 65.3[g/kwh].

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 하계학술대회 논문집 C
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• pp.1763-1765
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• 2002

A silent discharge type ozone generator using a water surface as an electrode has been proposed and investigated experimentally. A water surface has many Taylor cones when the ac voltage is applied on its surface, which increase the discharge surface greatly. In this paper, it was studied about the effect of the water conductivity. As increasing the water conductivity, the amount of generated ozone was increased and the silent discharge on the water surface took place steadily and calmly.

• 대한전기학회논문지:전기물성ㆍ응용부문C
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• 제49권12호
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• pp.673-678
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• 2000

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.

• 대한전기학회논문지:전기물성ㆍ응용부문C
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• 제48권12호
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• pp.791-797
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• 1999

Recently the ozone generation system is well used for cleaning the contaminated water by using the strong oxidization effects of ozone. In this paper the concentration, yield and generation quantity of the ozone by the Surface-Silent Discharge According to the Length of Coaxial Electrode is described. The electrodes composed of 3 electrodes-2 gaps are coaxial type and the ozone generation tube were designed and fabricated from the point of view of the energy efficiency, stability and easy control. To investigate the ozone generation dependency on electrode length, a few discharge tubes with different lengths were fabricated. The experimental equipments were provided with cooling system and dehumidifier for the many testing conditions. The main results show that the concentration, yield and generation quantity of ozone are improved by decreasing gas temperatures and increasing electrode lengths.

• 대한전기학회논문지:전기물성ㆍ응용부문C
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• 제50권4호
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• pp.169-175
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• 2001

Ozone has been widely applied to many industrial fields because of its strong oxidation power, Therefore, the studies have been carried out for the methods on an effective and high concentration ozone generation. The silent or surface discharge type ozone generators have been mainly used for high concentration ozone generation in many fields of applications. But these two types of ozone generators have shortcomings to be improved. In this study, the ozone generator which improved the shortcomings of above ozone generators was proposed and fabricated for the high concentration ozone generation. And the proposed ozone generator could generate the surface and barrier discharge simultaneously. For this purpose, a mesh type discharge electrode was proposed and studied as a function of the widths output maximum ozone concentration of 2.96[vol%] was obtained at 5.6[kV], 830[mA], for 0.3[mm] width and 0.8[mm] vacancy of the mesh electrode and gap spacing of 0.65[mm] respectively.

• 조명전기설비학회논문지
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• 제14권2호
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• pp.68-74
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• 2000

본 논문에샤는 동축형 전극구조 변화시의 중첨방전에 의해 발생되는 오존의 농도 효율 및 발생량 특생에 대해서 논했다. 오존생정올 향상시키기 위해 오존방전환의 새로운 형태를 제안하였으며 연면방전과 무성방전이 동시에 분리된 방전공간내에서 발생하도록 하였다. 전극구조에 대한 오존발생 의존성을 조사하지 워해 구조가 다른 형태(2전극-1캡,3전극-2캡 및 3전극-3캡형)인 방전관올 설계.제작하였고 실험은 오존발생특성을 살펴보지 위하여 60[Hz] 전원을 사용하여 무성방전과 연면반전을 같은 갭내에 중첩시켜 측정한 결과 무성방전을 이용한 전극구조보다 중첩방전올 이용한 전극에서 오존의 농도, 효율 및 발생량이 향상됨율 확인할 수 있었다.

• 조명전기설비학회논문지
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• 제19권7호
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• pp.32-38
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• 2005

본 논문에서는 대기오염물질인 Nitrogen Oxides(NO) 가스를 제거하기 위하여 3개의 전극이 장착된 하나의 방전 공간에 무성방전과 연면방전을 동시에 발생가능한 복합방전형 오존발생기를 설계 제작하였다. 전압인가 방식에 따라 3가지 형태의 오존발생기로 구성가능한 복합방전형 오존발생기에 유입하는 산소원료가스의 유량, 방전전력 및 오존발생기의 종류에 따른 방전 및 오존생성특성을 연구 검토한 결과, 8334[ppm] 및 3249[mg/h]의 오존을 얻을 수 있었다. 또한 NO(1200[ppm])/$N_2$ 가스의 입력방식에 따른 NO 가스 제거특성을 방전전력 및 오존발생기의 종류에 따라 연구 검토한 결과, 최대 100[%]의 제거율을 얻을 수 있었다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 C
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• pp.2144-2146
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• 2000

In this research, a ozone generation using a combined discharge method, in which a surface and a silent discharges are occur in discharge region simultaneously, is investigated experimentally. On our experiments, the combined discharge was confirmed, and the characteristics of the ozone generation were obtained. In this paper, the typical results about the ozone generation are described.

• 조명전기설비학회논문지
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• 제18권2호
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• pp.44-48
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• 2004

수표면을 전극으로 사용한 무성방전형 오존발생기를 제안하고 수중의 전도도 변화가 수표면 방전에 미치는 영향을 실험적으로 조사하였다. 수표면 방전에 중요한 영향을 줄 수 있는 요소로 방전공간내의 이온과 수중의 이온 및 극성분자등이 있다. 본 연구에서는 전도도를 변화시켜 수중에 존재하는 이온의 수를 조절함으로써 방전특성을 변화시키고자 하였다. 이를 위해 증류수내에 각각 다른양의 NaCl을 투입함으로써 전도도를 변화시켰고 이때의 전류-전압특성과 오존발생특성을 비교 조사하였다. 결과적으로 순수한 증류수를 사용한 경우보다 NaCl을 투입한 경우 안정된 방전을 발생시킬 수 있었고 투입하는 NaCl의 양을 늘여감에 따라 방전개시전압을 낮출 수 있었다.