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플라즈마 리액터 및 오존분해 촉매를 이용한 메탄올 및 에탄올로부터 수소발생특성
구본국(Bon-Kook Koo),김영춘(Yong-Chun Kim),장문국(Mun-Gug Jang),김종현(Jong-Hyun Kim),박재윤(Jae-Youn Park),한상보(Sang-Bo Han) 한국조명·전기설비학회 2011 조명·전기설비학회논문지 Vol.25 No.10
In this work, the effect of the initial concentration of methanol and ethanol, and the addition of oxygen molecules were discussed to improve the hydrogen generation using non-thermal plasma reactor effectively. In addition, the effect of ozone decomposition catalyst of manganese dioxide and its quantity was investigated. First, hydrogen concentration increased until an initial concentration of about 40,000[ppm] of methanol and thereafter it was saturated. Henceforth, hydrogen concentration decreased with increasing the oxygen percent on the carrier gas of nitrogen about both substances. Related with the effect of catalyst, it increased upto 60[g], but it was not changed largely after that. Consequently, it is confirmed that the hybrid process using plasma process and catalytic surface chemical reaction is a very promising way to increase the efficiency of hydrogen generation as investigated in this work.
김성삼,김주찬,구본국,고희석,Kim, Sung-Sam,Kim, Ju-Chan,Koo, Bon-Kook,Koh, Hee-Seog 한국조명전기설비학회 2006 조명·전기설비학회논문지 Vol.20 No.1
본 논문에서는 철관이 들어있는 건축물의 기초를 대용접지극으로 활용하기 위해 콘크리트의 전기적 특성에 관해서 기초적 검토를 하였다. 철근이 들어있는 몰탈블록 모형과 콘크리트블록 모형을 제작 후 접지저항 측정 결과에 따르면, 철근의 수량에 의한 접지 저항값과 대지저항률 보다 블록의 저항율에 의한 접지 저항값이 크게 영향을 받는 것을 알 수 있었다. The electrical characteristics of concrete block including a reinforcing rod in the foundation of the housing was fundamentally reviewed. It was tried to apply the substitutional earthing electrode in the foundation of the building. In order to identify the difference in the earthing resistance between mortar block and concrete block model, those models including a reinforcing rod in their inside were prepared and investigated for the earthing resistance. In results, the earthing resistance was largely affected by the block's resistivity compared to the change of resistance in reinforcing rods and the ground resistivity.
김영춘(Young-Chun Kim),구본국(Bon-Kook Koo),장문국(Mun-Gug Jang),지학배(Hag-Bae Ji),한상보(Sang-Bo Han),박재윤(Jae-Youn Park) 대한전기학회 2011 전기학회논문지 Vol.60 No.11
The goal of this paper is to find an operating conditions of the single direct ethanol fuel cell such as the cell temperature, and flow rates of ethanol and oxygen. To investigate the output characteristics, the electrical current increased from 0[A] with interval of 0.001[A] every 2[s], and the cell voltage was increased until the voltage became 0.05[V]. Related to the effect of the cell temperature, the output characteristics both voltage and power were increased upto 80[℃] according to the increase of the current density, but those were decreased over that temperature. In addition, the optimal flow rate of ethanol in anode was identified as of 2[mL/min] due to the dependence of generation rate such as the hydrogen ion and electron. And the flow rate of oxygen in cathode was desirable to about 300[sccm/min], it might be affected by the chemical reaction rate of the water formation among hydrogen ion, electron, and oxygen. Consequently, the fundamental conditions were identified in this work, and it will be carried out to find the best conditions of membrane by the effect of the plasma surface treatment, and the effect of other catalysts except for a platinum.