Abstract
AbstractA new design of High Temperature Steam Electrolyzer (HTSE) based on metallic seals, associated to an insulating cell support and a flexible interconnect system has been proposed. In this work, complete simulations of this 3D design have been performed with ANSYS®‐FLUENT® software. The temperature repartition is determined by taking into account thermal exchanges, fluids movements, and electrochemical reactions. Moreover, due to stress relaxation mechanism, the flexible interconnect loading decreases during time, which may impact the contact resistance and the electrochemical solution. A possible degradation of the contact resistance with time is predicted by the simulation and its effect will be discussed according to some design parameters. Steam electrolysis tests have been conducted at 800 °C on this new design. The comparisons to the simulations are also presented. All these results obtained in this study lead to propose some recommendations for such a design.
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