Optimization of parametric performance of a PEMFC

In this study, the Taguchi method was applied to determine optimum working conditions in obtaining maximum power density of a PEMFC. Performance measure analysis was also followed by performing a variance analysis, in order to determine the optimum levels and relative magnitude of the effect of parameters. The optimum working conditions were found to be system pressure, 5 bar; flow rate ratio of H 2 and O 2 , 1 / 2 ; temperature of fuel cell, 75 ∘ C and temperature of humidifiers, 75 ∘ C . Under these conditions, the amount of maximum power density was predicted as 353 mW cm - 2 by using experimental results obtained according to Taguchiʹs orthogonal array (OA) L 9 ( 3 4 ) . Verification experiment was done for the same optimum conditions and maximum power density was observed as 379.64 mW cm - 2 . According to the results of this optimization, it was seen that pressure and humidification temperature were the effective parameters.