Abstract
This paper carries the numerical analysis on dynamic behaviour of a tubular Solid Oxide Fuel Cell (SOFC), particularly relating the operational parameter of the fuel utilization (FU) given as a ratio of fuel consumption to its supply. The transient response of the voltage to the change in the current was studied in several FU levelled conditions. The response lag due to diffusion of hydrogen in a fuel flow channel has a certain consequence in elongate the voltage response. It was also found that the difference in diffusion model does not result in the voltage response, but the voltage performance.
