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NTIS 바로가기大韓機械學會論文集. Transactions of the Korean Society of Mechanical Engineers. B. B, v.33 no.5 = no.284, 2009년, pp.299 - 310
김동섭 (인하대학교 기계공학부) , 박성구 (인하대학교 대학원 기계공학부)
Fuel cells are expected to be promising future power sources in both aspects of thermal efficiency and environmental friendliness. Accordingly, worldwide research and development efforts have been enormously increasing recently in various applications such as power plants, transportation and portabl...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
연료전지란? | 연료전지는 연료가 가진 화학에너지를 전기화학 반응을 통해 직접 전기에너지로 변환시키는 직접 에너지 변환장치로서 셀 반응을 통해 전기적 에너 지를 생산하는데, 셀 반응이 발열반응이기 때문에 부수적으로 열도 발생시킨다. 특히 고온형 연료전 지에서는 높은 온도에서 열이 발생하므로 이를 효과적으로(예를 들어 개질열로 공급) 사용하는 것이 가능하여 저온형 연료전지에 비하여 전체 발전 시스템의 효율을 더 높게 구현하는 것이 가능하다. | |
연료전지 셀 전압을 감소시키는 3 가지 주요 원인은 무엇에 영향을 받는가? | 연료전지 셀 전압을 감소시키는 3 가지 주요 원인은 활성화(Activation) 손실, 저항(Ohmic) 손실, 농도(Concentration) 손실이다. 이러한 손실들은 여러 작동 파라미터, 예를 들어 온도, 압력, 전류밀도 등에 영향을 받는다. 활성화 손실이 고온에서 작으므로 SOFC와 MCFC 등의 고온형 연료전지는 저온형 연료전지에 비해 상대적으로 작은 활성화 손실을 나타낸다. | |
연료전지 셀 전압을 감소시키는 3 가지 주요 원인은? | 연료전지 셀 전압을 감소시키는 3 가지 주요 원인은 활성화(Activation) 손실, 저항(Ohmic) 손실, 농도(Concentration) 손실이다. 이러한 손실들은 여러 작동 파라미터, 예를 들어 온도, 압력, 전류밀도 등에 영향을 받는다. |
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Song, T. W., Sohn, J. L., Kim, T. S. and Ro, S. T., 2006, 'Performance Characteristics of a MW-class SOFC/GT Hybrid System Based on a Commercially Available Gas Turbine,' J. of Power Sources, Vol. 158, pp. 361-367
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Zhang, X., Li, J., Li, G. and Feng, Z., 2006, 'Dynamic Modeling of a Hybrid System of the Solid Oxide Fuel Cell and Recuperative Gas Turbine,' J. of Power Sources, Vol. 163, pp. 523-531
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Karvountzi, G. C. and Duby, P. F., 2007, 'Part Load Strategies of a Multi-MW Molten Carbonate Fuel Cell Gas Turbine Hybrid System,' ASME paper GT2007-27119
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