Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 08, 2022 - October 09, 2022
In this research, we have developed a heat balance model considering a vapor transfer in components consisting of a single cell of PEFC, and calculated the temperature distribution on the interface between PEM and catalyst layer at cathode (reaction surface) using this model. The flow rate, relative humidity of inflow gas, the relative humidity of surrounding air, and the thickness of PEM and separator were varied under high temperature operation conditions of 100 °C to evaluate the effect of them on the distribution of the reaction surface temperature (Treat). The impact of flow rate of inflow gas and the relative humidity of surronding air on distribution of Treat is little. The impact of thickness of PEM on distribution of Treat in case of Nafion 115 is the largest among the investigated conditions. In addition, the impact of thickness of separator on distribution of Treat in case of the separator thickness of 2.0 mm (Sep: 0.5 mm, Chan: 1.0 mm) is the largest among the investigated conditions. It is revealed that the power generation perfromance is improved with the decrease in the standard deviaton of distribution of Treat.
