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Effects of SOFC Exhaust Gas Recirculation on Performance of Solid Oxide Fuel Cell-Gas Turbine Hybrid System Utilizing Renewable Fuels

机译:SOFC废气再循环对使用可再生燃料的固体氧化物燃料电池-燃气轮机混合系统性能的影响

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The use of biogas and ethanol as fuels for solid oxide fuel cell-gas turbine (SOFC-GT) hybrid system needs an external steam reformer. As the operation of steam reformer and air preheater requires high external energy input, the efficient heat management of the SOFC system is necessary. Thus, the aim of this study is to analyze the recycling of the SOFC exhaust gas in a SOFC-GT hybrid system utilizing fuels such as ethanol and biogas. The effect of the recirculation ratio of the anode exhaust gas on the performance, the SOFC efficiency, the turbine to SOFC power ratio, and the overall efficiency of hybrid system was first investigated. Additionally, the recirculation of both anode and cathode exhaust gases in the SOFC-GT hybrid system was studied.
机译:将沼气和乙醇用作固体氧化物燃料电池-燃气轮机(SOFC-GT)混合系统的燃料需要外部蒸汽重整器。由于蒸汽重整器和空气预热器的运行需要大量外部能量输入,因此必须对SOFC系统进行有效的热量管理。因此,本研究的目的是分析利用燃料(例如乙醇和沼气)的SOFC-GT混合系统中SOFC废气的再循环。首先研究了阳极废气再循环比对性能,SOFC效率,涡轮机与SOFC功率比以及混合动力系统整体效率的影响。此外,还研究了SOFC-GT混合系统中阳极和阴极废气的再循环。

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