Performance Analysis of Fuel Cell for Pressured MCFC/MGT Hybrid System

Abstract

Abstract:

The molten carbonate fuel cell (MCFC) performances of a pressured MCFC/MGT hybrid system using a fixed micro-gas turbine (MGT) design were analyzed for off-design operation with different control methods. The effects of current density and MCFC temperature were considered for the MCFC modeling, and the modeling and experimental result were comparied. The off-design operation of the MGT was modeled by the performance characteristics of the compressor and turbine. Four control methods were mentioned for the part-load operation of the hybrid system, and the performances of MCFC were analyzed for the different methods using the system model. The results show that the efficiency of MCFC at partload operation can be higher than the design value by using the control method. The performance of MCFC has great effects on the system, the system performance can be improved by maintaining the MCFC operation temperature.

Key words: molten carbonate fuel cell (MCFC), micro-gas turbine (MGT), hybrid power system

CLC Number:

LIU Aiguo1,WENG Yiwu2,CHEN Lei1,MA Hongan1. Performance Analysis of Fuel Cell for Pressured MCFC/MGT Hybrid System[J]. Journal of Shanghai Jiaotong University, 2014, 48(09): 1239-1245.

References

［1］Wee J H. Molten carbonate fuel cell and gas turbine hybrid systems as distributed energy resources ［J］. Applied Energy, 2011, 88(12): 42524263.

［2］Zhang H C, Lin G X, Chen J C. Performance analysis and multiobjective optimization of a new molten carbonate fuel cell system［J］. International Journal of Hydrogen Energy, 2011, 36(6): 40154021.

［3］Liu A G, Weng Y W. Performance analysis of pressurized molten carbonate fuel cellmicrogas turbine hybrid system ［J］. Journal of Power Sources, 2010,195(1): 204213

［4］Sciacovelli A, Verda V. Sensitivity analysis applied to the multiobjective optimization of a MCFC hybrid plant ［J］. Energy Conversion and Management, 2012, 60: 180187.

［5］Kim B, Kim D H, Lee J, et al. The operation results of a 125 kW molten carbonate fuel cell system ［J］. Renewable Energy, 2012, 42: 145151.

［6］Franzoni A, Magistri L, Traverso A. Thermoeconomic analysis of pressurized hybrid SOFC systems with CO2 separation ［J］. Energy, 2008, 33(2): 311320.

［7］Park S K, Kim T S. Comparison between pressurized design and ambient pressure design of hybrid solid oxide fuel cellgas turbine systems ［J］. Journal of Power Sources, 2006, 163(1): 490499.

［8］Dalvi A, Guay M. Control and realtime optimization of an automotive hybrid fuel cell power system ［J］. Control Engineering Practice, 2009, 17(8): 924938.

［9］Zhang H S, Wang L J, Weng S L, et al. Control performance study on the molten carbonate fuel cell hybrid systems ［J］. Journal of Fuel Cell Science and Technology, 2008, 7(6): 061006060014.

［10］Wu X J, Zhu X J. Multiloop control strategy of a solid oxide fuel cell and micro gas turbine hybrid system ［J］. Journal of Power Sources, 2011, 196(20): 84448449.

［11］Jaroslaw M, Tomasz S, Krzysztof B, et al. The control strategy for a molten carbonate fuel cell hybrid system ［J］. International Journal of Hydrogen Energy, 2010, 35(7): 29973000.

［12］Yang J S, Sohn J L, Ro S T. Performance characteristics of partload operations of a solid oxide fuel cell/gas turbine hybrid system using airbypass valves ［J］. Journal of Power Sources, 2008, 175(1): 296302.

［13］Kim H, Cho J H, Lee K S. Detailed dynamic modeling of a molten carbonate fuel cell stack with indirect internal reformers［J］. Fuel Cells, 2013, 13(2): 259269.

［14］Heidebrecht P, Piewek S, Sundmacher K. Modeling of molten carbonate fuel cells, in fuel cell science and engineering: Materials, processes, systems and technology［M］. KGaA, Germany: WileyVCH Verlag GmbH and Co, 2012: 4365.

［15］Ramandi M Y, Berg P, Dincer I. Three dimensional modeling of polarization characteristics in molten carbonate fuel cells using peroxide and superoxide mechanisms ［J］. Journal of Power Sources, 2012, 218: 192203.

［16］Qi Y T, Huang B, Luo J L. 1D dynamic modeling of SOFC with analytical solution for reacting gasflow problem ［J］. AIChE Journal, 2008, 54(6): 15371553．

［17］Matthias G, Peter H, Kai S. Parameter identification of a dynamic MCFC model using a fullscale fuel cell plant ［J］. Industrial and Engineering Chemistry Research, 2008, 47 (8): 27282741.

［18］Kim Y J, Chang I G, Lee T W, et al. Effects of relative gas flow direction in the anode and cathode on the performance characteristics of a molten carbonate fuel cell ［J］. Fuel, 2010, 89(5): 10191028.

［19］Ramandi M Y, Dincer I. Thermodynamic performance analysis of a molten carbonate fuel cell at very high current densities ［J］. Journal of Power Sources, 2011, 196(20): 85098518.

［20］刘爱虢, 翁一武, 于立军. 熔融碳酸盐燃料电池热力特性研究与实验分析［J］. 上海交通大学学报, 2010, 44(7): 994999.

LIU Aiguo, WENG Yiwu, YU Lijun. Study on thermodynamic characteristics and experimental analysis of molten carbonate fuel cells ［J］. Journal of Shanghai Jiaotong University, 2010, 44(7): 994999.

［21］Bedogni S, Campanari S, Iora P, et al. Experimental analysis and modeling for a circularplanar type ITSOFC ［J］. Journal of Power Sources, 2007, 171(2): 617625.

［22］Bedont P, Grillo O, Massardo A F. Offdesign performance analysis of a hybrid system based on an existing molten fuel cell stack［J］. Journal of Engineering for Gas Turbines and Power, 2003, 125(4): 986993.

［23］Zhang H S, Weng S L, Su M. Dynamic modeling and simulation of distributed parameter heat exchanger［C］//Processing of ASEM Tubro Expo 2005. Nevada，USA: ASME，2005: 327333.

［24］刘爱虢, 翁一武, 张玲. 电池联接方式对燃料电池/燃气轮机混合动力系统性能影响［J］. 上海交通大学学报, 2012,46(7): 11171121.

LIU Aiguo, WENG Yiwu, ZHANG Ling. Effect of different cell connection methods on MCFC/MGT hybrid system performance［J］. Journal of Shanghai Jiaotong University, 2012, 46(7): 11171121.第48卷第9期2014年9月上海交通大学学报JOURNAL OF SHANGHAI JIAO TONG UNIVERSITYVol.48 No.9Sep. 2014