Solid oxide fuel cells are efficient and environmentally friendly energy-generating devices

where chemical energy is directly converted into electrical energy through the electrochemical reaction of the gases within the fuel cell. In this study

an electrochemical model was implemented in Aspen Plus to analyze the power generation performance of a 1-kW stack under various temperature and gas conditions. The design parameters for the 20-kW power generation module were determined

and the power generation performance of this module was examined. The results indicate that

when using hydrogen (H2)

the current density of each tower was 3625 A·m−2

corresponding to a fuel utilization rate of 80%

with the total power output of the module reaching 20.40 kW. In contrast

when using syngas

the voltage and power output of the module decreased. Furthermore

with a current density of 3500 A·m−2 per tower

the total power output was 19.73 kW. Finally

varying the mole ratio of hydrogen to carbon monoxide (H2:CO) from 2.6 to 3.4 had a negligible effect on the voltage output when the mole ratio of steam to carbon monoxide (H2O:CO) was maintained at 1:1 and the current density was 3375 A·m−2.