Thermo-Kinetic Representation and Transient Simulation of a Molten Carbonate Fuel Cell

Author(s):  
Brian C. Carroll ◽  
Thomas M. Kiehne ◽  
Michael D. Lukas

There are a growing number of models in the literature dealing with the transient behavior of fuel cells. However, few, if any, employ fundamental kinetic theory to model the fuel reformation process while simultaneously simulating fuel cell behavior from a transient, system-level perspective. Thus a comprehensive, transient fuel cell model has been developed that includes all the relevant thermodynamics, chemistry, and electrical characteristics of actual fuel cell operation. The model tracks the transient temperature response of a fuel cell stack, chemical specie concentrations of exhaust gases, efficiency of the fuel reformation equipment, and electrical output characteristics. Model results provide a concise, parametric evaluation of the influence of operating conditions and user-controlled parameters on fuel cell performance. The model is validated against transient Molten Carbonate fuel cell (MCFC) data from a subscale stack.

Author(s):  
Vittorio Verda ◽  
Flavio Nicolin

In this paper, a hybrid plant obtained by integrating a molten carbonate fuel cell stack with a micro gas turbine and a steam reformer is considered. The system also produces hydrogen through a pressure swing absorption system. The aim of this work is the multi-objective optimisation of the system, considering energy and economic objective functions. Possible off-design operating conditions accounting for degradation of the fuel cell performance and time variation in the biogas composition are considered, as well as variation in the ambient temperature. The results show that the operating temperature of the fuel cell is a crucial design parameter as its value strongly affects the plant efficiency, its lifetime and the unit cost of electricity.


2009 ◽  
Vol 39 (11) ◽  
pp. 2123-2128 ◽  
Author(s):  
Vittorio Odemondo ◽  
S. Dellepiane ◽  
R. Bampi ◽  
P. Capobianco

PAMM ◽  
2007 ◽  
Vol 7 (1) ◽  
pp. 1151703-1151704
Author(s):  
Armin Rund ◽  
Kati Sternberg ◽  
Hans Josef Pesch ◽  
Kurt Chudej

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