Method and arrangement for distributing reactants into an electrolyzer cell

An input reactant flow guiding arrangement for a solid oxide electrolyzer cell, the cell having an input reactant side, an oxygen rich side, and an electrolyte element between the input reactant side and the oxygen rich side, wherein the input reactant flow guiding arrangement comprises:

• a flow field plate for each cell to arrange air flow on a first side of the flow field plate and fuel flow on a second side of flow field plate;
• a flow distribution area on the flow field plate;
• a flow outlet area on the flow field plate;
• means for guiding input reactant flow to the flow distribution area from sides of the electrolyzer cell;
• means for turning at least one of the input reactant feed flow on the flow distribution area and input reactant outlet flow on the flow outlet area in order to equalize flow distribution on an electrolyte element;
• and
• a reactant flow adjusting structure with flow restriction orifices having at least one geometrical shape for adjusting homogenously at least one of the input reactant feed flow and input reactant outlet flow over an electrolyte element based on a flow functional effect of said at least one geometrical shape of the flow adjusting structure, the flow adjusting structure having flow restriction orifices of definable height and a gasket structure having at least partly an elliptical shape as said at least one geometrical shape.