• Journal of Advanced Marine Engineering and Technology
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• 제31권8호
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• pp.924-931
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• 2007

Now, there are two big issues threatening global society, which are the depletion of fossil fuels and the environmental disruption. Therefore, marine diesel engine, taking up over 95% share of the marine power market, has met the environmental and economical problems, too. These problems have caused a necessity of new, alternative power systems in ships and fuel cell systems has been playing a central role as one of the alternatives. This paper analyzes the characteristics of marine fuel cell systems, R&D trends of advanced countries, and mapping out R&D strategy of Korea.

• 에너지공학
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• 제2권1호
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• pp.16-21
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• 1993

연료전지 발전기술은 에너지 절약 및 환경보호 측면에서의 우수한 특성으로 인해 새로운 발전기술로서 평가되고 있다. 여러가지 연료전지 기술중 인산형 연료전지는 기술적으로 가장 성숙되어 있는 상태이며, 상용화를 눈앞에 두고 있다. 본 고에서는 인산형 연료전지에 대한 최근의 기술동향 및 상용화 노력을 소개하고자 한다. 미국과 일본의 개발노력 및 기술상태를 비교 분석하였으며, 향후 기술 개발 방향 등에 대해서도 언급하고자 한다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.855-861
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• 2008

The development of fuel cell hybrid power system, as a next generation power system for solving the global warming, has been being made actively progress around passenger vehicles. Also, in case of railway vehicles in unelectrified railway line, the adoption of fuel cell hybrid power system is being studied around well-known manufacturers. This paper introduces both the configuration and the control strategy of fuel cell hybrid power system in order to apply to a light electronic railway vehicle having a repeated driving pattern of acceleration, coasting and deceleration and provides simulation results to evaluate their validity.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 A
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• pp.24-26
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• 1999

A new hybrid vehicle Powered by fuel cells is being developed in order to improve the fuel conversion rate and reduce air pollutions. Fuel cell electric vehicle(FCEV) is considered to be the next generation electric vehicle with on board generator. This paper is to determine the current technical status of FCEVs and assess and judge the prospect of the prospects of fuel cell electric engines.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 A
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• pp.331-332
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• 2006

This paper proposes the fuel cell power plants as alternative energy sources for distributed generation in Jeju Island, Korea. This will help to increase the fuel efficiency, at least double the current thermal power plants, decrease environmental pollution, virtually to none, increase the reliability of power supply, reducing the dependency of the HVDC link, and provide quality power to the growing infrastructure in meeting the requirements for the free-trade international island.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2007년도 춘계학술대회
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• pp.113-116
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• 2007

The fuel cell which converts directly chemical energy of fuel into electric energy has higher efficiency than the conventional power generation which involves several additional processes. Especially, polymer electrolyte membrane fuel cell (PEMFC) of which the electrolyte is a thin proton conductive polymer membrane is affordable for portable power applications and small-scale distributed power generation including household and small building. It is very important to not only increase the efficiency of FC itself but determine the optimal operation mode. The optimal operational planning of lkW household PEMFC system based on the daily electricity and heat demand patterns was performed. The estimated economic gain was up to 20% by adoption of PEMFC system.

• International Journal of Naval Architecture and Ocean Engineering
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• 제3권2호
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• pp.141-149
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• 2011

The world is facing a challenge in meeting its needs for energy. Global energy consumption in the last halfcentury has increased very rapidly and is expected to continue to grow over the next 50 years. However, it is expected to see significant differences between the last 50 years and the next. This paper aims at introducing a good solution to replace or work with conventional marine power plants. This includes the use of fuel cell power plant operated with hydrogen produced through water electrolysis or hydrogen produced from natural gas, gasoline, or diesel fuels through steam reforming processes to mitigate air pollution from ships.

• 조명전기설비학회논문지
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• 제12권3호
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• pp.83-88
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• 1998

본 논문은 태양전지 연료전지 복합 전력시스랩에 대한 환경평가를 다목적함수의해 선정 보조시스템의 하나언 이상점 기법올 통하여 다루고자 한다. 그에 대한 평가는 발전소 건설에 필요한 부지량과 건설에서 해체때까지의 이산화탄소 배출량의 관점에서 이루어지며 그 결과는 기존의 화석연료 발전시스템들과 비교되어진다. 연료전지 발전은 이미 변덕스러운 날씨하에서 극심한 태양전지의 출력량 변회를 보상하기 위한 적절한 발전기술엄이 증명 되었다. 가장 적은 부지량을 필요로 하는 연료전지 발전은 태양전지 발전시스템의 과도한 부지 펼요량올 경감시 킬 수 있으며 그 태양전지-연료전지 복합 전력시스템은 건셜에서 해체때까지의 이산화탄소 배출량 면에서도 가장 적은 영향올 미치는 것으로 나타난다.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2005년도 춘계학술대회
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• pp.306-309
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• 2005

One of the most critical issues in sol id oxide fuel cell (SOFC)running on hydrocarbon fuels is the risk of carbon formation from the fuel gas. The simple method to reduce the risk of carbon formation from the reactions is to add steam to the fuel stream, leading to the carbon gasification react ion. However, the addition of steam to fuel is not appropriate for the auxiliary power unit (APU) and potable power generation (PPG) systems due to an increase of complexity and bulkiness. In this regard, many researchers have focused on so-called 'direct methane' operation of SOFC, which works with dry methane without coking. However, coking can be suppressed only by the operation with a high current density, which may be a drawback especially for the APU and PPG systems. The single chamber fuel cell (SC-SOFC) is a novel simplification of the conventional SOFC into which a premixed fuel/air mixture is introduced. It relies on the selectivity of the anode and cathode catalysts to generate a chemical potential gradient across the cell. Moreover it allows compact and seal-free stack design. In this study, we fabricated honeycomb type mixed-gas fuel cell (MGFC) which has advantages of stacking to the axial direction and increasing volume power density. Honeycomb-structured SOFC with four channels was prepared by dry pressing method. Two alternative channels were coated with electrolyte and cathode slurry in order to make cathodic reaction sites. We will discuss that the anode supported honeycomb type cell running on mixed gas condition.

• 공업화학
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• 제22권2호
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• pp.125-132
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• 2011

본 연구에서는 차세대 연료전지 기술로서 일체형 재생 연료전지(Unitized Regenerative Fuel Cell, URFC)에 대하여 검토하였다. URFC는 신재생 에너지원과 연료전지의 하이브리드 시스템 구현을 목적으로 하는 필수 기술이며 21세기 수소경제 사회 완성을 위한 신기술로 평가된다. 특히 본 연구에서는 URFC 요소 기술로서 고분자 전해질 막에 대한 연구 결과를 정리하여 URFC 기술의 이해를 돕고자 하는 것이 목적이다. URFC용 고분자 전해질 막은 기능적 특성상 높은 수소이온 전도도, 치수안정성, 기계적 물성 및 계면 안정성이 요구된다. 이를 바탕으로 미래 에너지원인 수소의 생산, 저장, 이용을 일체화된 시스템으로 완성시킬 수 있는 URFC 기술은 향후 연료전지 기술과 더불어 풍력과 태양광 발전 등의 신재생 에너지 관련 기술을 함께 발전시킬 수 있는 새로운 연구 분야가 될 것으로 판단된다.