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Performance test of a 5 kW solid oxide fuel cell system under high fuel utilization with industrial fuel gas feeding

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International Journal of Coal Science & Technology 2021年第3期8卷 394-400页

作者： Ming Xu Hanlin Wang Mingxian Liu Jianning Zhao Yuqiong Zhang Pingping Li Mingliang Shi Siqi Gong Zhaohuan Zhang Chufu Li National Institute of Clean-and-Low-Carbon Energy Beijing 102209China Shenhua New Energy Company LtdBeijing 100007China Coal To Oil Branch Company Ningxia Coal Industry GroupYinchuan 750411China

As the demand for green energy with high efficiency and low carbon dioxide(CO2)emissions has increased,solid oxide fuel cells(SOFCs)have been intensively developed in recent *** gasification fuel cells(IGFCs)in particular show potential for large-scale power generation to further increase system ***,for commercial application of IGFCs,it is important to design reliable multi-stacks for large systems that show long-term stability and practical fuel gas for application to industrial *** this work,a test rig(of a 5 kW SOFC system,with syngas from industrial gasifiers as fuel)was fabricated and subjected to long-term tests under high fuel utilization to investigate its *** maximum steady output power of the system was 5700 W using hydrogen and 5660 W using syngas and the maximum steady electrical efficiency was 61.24%while the fuel utilization efficiency was 89.25%.The test lasted for more than 500 h as the fuel utilization efficiency was larger than 83%.The performances of each stack tower were almost identical at both the initial stage and after long-term *** 500 h operation,the performances of the stack towers decreased only slightly under lower current and showed almost no change under high *** results demonstrate the reliability of the multi-stack design and the prospect of this SOFC power-generation system for further enlarging its application in a MWth demonstration.

关键词： Solid oxide fuel cell(SOFC) Integration gasification with fuel cell(IGFC) Gasification stack tower

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