平板型固体酸化物形水蒸気電解セルの擬三次元数値解析

局所吸発熱量と温度分布

抄録

To optimize the operating conditions of solid oxide electrolysis cells (SOECs), it is important to understand the distributions of the physical quantities in the cell, which are difficult to measure in experiments. In this study, we numerically analyze the transport and reaction in a planar SOEC. A quasi-three-dimensional model is used to reduce the computational load. We investigate the effect of the operating conditions of the SOEC on the distribution of the local gas concentration, current density, and gas temperature inside the cell. It is found from the numerical analysis that when the endothermic and exothermic heat in the cell are balanced, the temperature distribution of the cell becomes uniform in the flow direction, which is desirable in suppressing the thermal stress in the cell.