... sensitivity analysis is performed and the information on the selection of the influential decision variables is obtained accordingly. Fig. 8 Fuel cell power density versus current density for two different values of the inlet stack pressure As for the system pressure shown in Fig. 6...

..., respectively, is also studied. Comparison among those catalysts, 15%Pt-15%Sn/C yields better cell performance than the others. Levelized energy cost (LEC) and sensitivity analysis on LEC are also assessed. 18 08 2010 02 07 2011 26 09 2011 26 09 2011 Tables 2 and 3 show the key...

... that observed for modern intermediate temperature anode-supported configurations; thus, a sensitivity analysis was conducted to identify appropriate parameters for modern SOFC modeling. Model results are shown for SOFC operation on humidified H 2 and CH 4 containing syngas, under coflow and counterflow...

.... The resulting equations are solved with in-house software that utilizes state-of-the-art computational fluid dynamics (CFD) techniques including robust nonlinear solution algorithms, numerical derivatives with complex variables, and sensitivity analysis with adjoint methods. The value of the sensitivity...

...S. Kapadia; W. K. Anderson; L. Elliott; C. Burdyshaw Sensitivity analysis and design optimization of solid oxide fuel cells are presented. Multispecies diffusion, low speed convection, and chemical kinetics are included in a two-dimensional numerical model, and sensitivity derivatives are computed...

... for fuel cell operation. All the four factors have two levels, leading a full factorial design requiring 2 4 experiments leading to 16 experiments and fractional factorial experiments, 2 4 − 1 , leading to 8 experiments. The experimental data collected were analyzed by statistical sensitivity analysis...

.... Finally, a sensitivity analysis is performed, in order to investigate the influence of the design parameters on the performance of the system. The overall control volume was discretized by slicing it by n plans orthogonal to the cylinder common axis. Thus, the system was subdivided into n...

... a sensitivity analysis with respect to the physical reference case and geometric parameters. The results indicate that surface diffusion might play a major role for the reaction kinetics, but only if the air pore is void of liquid water. In contrast, the formation of liquid water in the gas pores will turn...

... with that, there is the desire to achieve faster load changes while temperature gradients stay small. For the first time, optimal fast load changes have been computed numerically, including a parametric sensitivity analysis, based on a mathematical model of Heidebrecht. The mathematical model allows for the calculation...

...J. Fuhrmann; B. Haasdonk; E. Holzbecher; M. Ohlberger bifurcation catalysis diffusion electrochemical electrodes partial differential equations polymer electrolytes proton exchange membrane fuel cells reaction kinetics sensitivity analysis The operation of fuel cells with polymer...

... as well as with two combined heat and power applications, where an economical value is assigned to the produced and consumed heat. The impact on economical competitiveness of possible incentives for the generated fuel cell power is estimated. A sensitivity analysis with different fuel cell-units...

... deviations. 17 03 2005 14 09 2005 proton exchange membrane fuel cells optimisation control system analysis control system synthesis sensitivity analysis coolants flow control PEM fuel cell system thermal dynamics control volume analysis first-law analysis energy balance...