TY - JOUR
N2 - The article presents a zero-dimensional mathematical model of a tubular fuel cell and its verification on four experiments. Despite the fact that fuel cells are still rarely used in commercial applications, their use has become increasingly more common. Computational Flow Mechanics codes allow to predict basic parameters of a cell such as current, voltage, combustion composition, exhaust temperature, etc. Precise models are particularly important for a complex energy system, where fuel cells cooperate with gas, gas-steam cycles or ORCs and their thermodynamic parameters affect those systems. The proposed model employs extended Nernst equation to determine the fuel cell voltage and steadystate shifting reaction equilibrium to calculate the exhaust composition. Additionally, the reaction of methane reforming and the electrochemical reaction of hydrogen and oxygen have been implemented into the model. The numerical simulation results were compared with available experiment results and the differences, with the exception of the Tomlin experiment, are below 5%. It has been proven that the increase in current density lowers the electrical efficiency of SOFCs, hence fuel cells typically work at low current density, with a corresponding efficiency of 45–50% and with a low emission level (zero emissions in case of hydrogen combustion).
L1 - http://www.czasopisma.pan.pl/Content/103642/PDF/CPE-39-1-art_09_119103_9.pdf
L2 - http://www.czasopisma.pan.pl/Content/103642
PY - 2018
IS - No 1
KW - fuel cell
KW - SOFC
KW - mathematical model
KW - experiment
KW - verification
A1 - Badur, Janusz
A1 - Lemański, Marcin
A1 - Kowalczyk, Tomasz
A1 - Ziółkowski, Paweł
A1 - Kornet, Sebastian
PB - Polish Academy of Sciences Committee of Chemical and Process Engineering
VL - vol. 39
T1 - VERIFICATION OF ZERO-DIMENSIONAL MODEL OF SOFC WITH INTERNAL FUEL REFORMING FOR COMPLEX HYBRID ENERGY CYCLES
DA - 2018.03.30
UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/103642
T2 - Chemical and Process Engineering
DOI - 10.24425/119103
ER -