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수냉식 방열을 이용한 연료전지용 PROX 반응기의 성능에 관한 실험적 연구
김진산,조태현,구본찬,이도형 한국수소및신에너지학회 2016 한국수소 및 신에너지학회논문집 Vol.27 No.5
Fuel cell is a device for producing electricity by using the hydrogen produced by the fuel processor. At this time, CO is also created by the fuel processor. The resulting CO enters the stack where is produce electricityand leads to the adsorption of anode catalyst, finally the CO poisoning occurs. Stack which occurred CO poisoninghas a reduction in performance and shelf life are gradually fall because they do not respond to hydrogen. In thispaper, experiments that using a PROX reactor to prevent CO poisoning were carried out for removing the COconcentration to less than 10ppm range available in the fuel cell. Furthermore experiments by the PROX reactionwas designed and manufactured with a water-cooling heat exchange reactor to maintain a suitable temperaturecontrol due to the strong exothermic reaction.
수중함 전기 계통의 고 신뢰도 설계를 위한 고장나무분석과 적용
김진산,최진성,빈재구,강필순,Kim, Jin-San,Choi, Jin-Sung,Bin, Jae-Goo,Kang, Feel-soon 대한전기학회 2017 전기학회논문지 Vol.66 No.1
A top priority in the design of underwater vehicle is to guarantee the dependability of the electric system because failure of the electrical power supply system is directly related to the life of the passengers. In this paper, we present four kinds of alternative designs to improve reliability of electrical system in underwater vehicle. To reduce the risk and to increase availability of the electrical system, we use the redundancy of the grid structure and power converter. For all design alternatives, we carry out Fault Tree Analysis. Based on the FTA result, we implement RAM simulation to compare the risk and availability for the proposed design alternatives.
유연하고 신속한 표면미세공기술을 이용한 Micro-fluidic Channel 제작
김진산,성인하,김대은 한국공작기계학회 2002 한국공작기계학회 춘계학술대회논문집 Vol.2002 No.-
Recently, the need for transporting and manipulating minute amount of fluids in micro scale channels (so-called micro-fluidics) has been increasing, especially in biotechnology and biochemical processing. This work demonstrates that the mechano-chemical process which consists of mechanical abrasive action combined with chemical process can be used to fabricate micro-fluidic channels more rapidly and cost effectively than other methods. In this work, capillary filling of fluids in micro-channels was investigated by theoretical approaches and experiments. From the experimental results, it is expected that a complex micro-fluidic system can be fabricated using the micro-fabrication technique and micro system packaging method described in this work.