Computer simulation of stationary energy production from biomass by molten carbonate fuel cells.

This paper presents an integrated approach to the steady state and dynamic simulation of fuel cells and power generation processes. Attention is devoted to Molten Carbonate Fuel Cells (MCFC) due to the relative low cost, simple construction and flexibility of use of the fuel. Two models are used in this work, both recently presented in the literature: (i) a steady state model simulating a global (MCFC) power plant and (ii) a dynamic model for the same cell (MCFC). The models are based on real plant data and the simulations are selected according to real operating conditions. The computer simulation is finally applied to a feasibility study of a MCFC coupled with a biomass gasification process. This paper reports the results of computer simulation for a realistic configuration of a power system generated by MCFC, focusing on macroscopic quantities of interest such as stack efficiency, global process electrical efficiency, co-generative efficiency, integrated with a consistent dynamic model of the cell able to consider microscopic and distributed variables behaviour such as temperature and concentration in the cells. The software developed allows the in silico study of the effect of variations in the process conditions as well as modification of the input fuel, thus providing a useful tool for supporting technical decisions and feasibility studies on the use of fuel cells in developing countries.

[1]  Byoung Sam Kang,et al.  Experimental study on the dynamic characteristics of kW-scale molten carbonate fuel cell systems , 2001 .

[2]  Maurizio Fermeglia,et al.  Process Simulation for Molten Carbonate Fuel Cells , 2005 .

[3]  Barbara Bosio,et al.  Preliminary experimental and theoretical analysis of limit performance of molten carbonate fuel cells , 2001 .

[4]  Rodolfo Taccani,et al.  Simulation of process for electrical energy production based on molten carbonate fuel cells , 2003 .

[5]  Hee Chun Lim,et al.  Studies of the effects of the reformer in an internal-reforming molten carbonate fuel cell by mathematical modeling , 2002 .

[6]  Michael Mangold,et al.  Nonlinear model reduction of a dynamic two-dimensional molten carbonate fuel cell model , 2006 .

[7]  Yasuo Miyake,et al.  A study of heat and material balances in an internal-reforming molten carbonate fuel cell , 1995 .

[8]  K. Y. Lee,et al.  An Explicit Dynamic Model for Direct Reforming Carbonate Fuel Cell Stack , 2001, IEEE Power Engineering Review.

[9]  Peter Heidebrecht,et al.  Molten carbonate fuel cell (MCFC) with internal reforming : model-based analysis of cell dynamics , 2003 .

[10]  Hee Chun Lim,et al.  Effects of water-gas shift reaction on simulated performance of a molten carbonate fuel cell , 2002 .

[11]  Hee Chun Lim,et al.  Analysis of temperature and pressure fields in molten carbonate fuel cell stacks , 2001 .

[12]  J.P.P Huijsmans,et al.  Development of second generation direct internal reforming molten carbonate fuel cell stack technology for cogeneration application , 1998 .

[13]  Manfred Bischoff,et al.  Operating experience with a 250 kWel molten carbonate fuel cell (MCFC) power plant , 2002 .

[14]  Hee Chun Lim,et al.  Effect of various stack parameters on temperature rise in molten carbonate fuel cell stack operation , 2000 .

[15]  Barbara Bosio,et al.  Modeling and experimentation of molten carbonate fuel cell reactors in a scale-up process , 1999 .

[16]  K. Joon.  Critical issues and future prospects for molten carbonate fuel cells , 1996 .

[17]  W He,et al.  Dynamic model for molten carbonate fuel-cell power-generation systems , 1998 .

[18]  Ruy Sousa,et al.  Modeling of Fuel Cell Systems , 2006 .

[19]  K. Hemmes,et al.  On modelling molten carbonate fuel-cell cathodes by electrochemical potentials , 2000 .

[20]  Wei He.  NUMERICAL ANALYSIS OF MOLTEN CARBONATE FUEL CELL SYSTEMS , 1997 .

[21]  Toshio Abe,et al.  Numerical analyses of the internal conditions of a molten carbonate fuel cell stack: comparison of stack performances for various gas flow types , 1998 .

[22]  Carina Lagergren,et al.  Mathematical modelling of the MCFC cathode on the linear polarisation of the NiO cathode , 1997 .

[23]  A. B. Hart,et al.  Fuel Cells: Theory and Application , 1967 .

[24]  W. He,et al.  Three-dimensional simulation of a molten carbonate fuel cell stack using computational fluid dynamics technique , 1995 .

[25]  Karl V. Kordesch,et al.  Fuel cells and their applications , 1996 .

[26]  M. Matsumura,et al.  Development of an internal reforming molten carbonate fuel cell stack , 1995 .