| 摘要 |
An object of the invention is a fuel flow stack arrangement for solid oxide fuel cells, each cell comprising a fuel side (100), an oxygen rich side (102), and an electrolyte element (104) between the fuel side and the oxygen rich side, the cells being arranged to a formation of a stack, and the arrangement comprises in repetitious structures (138) a flow field plate (121) for each cell to arrange flows in the cell, a flow distribution area (120) on the flow field plate (121), a flow outlet area (131) on the flow field plate (121), and means (123) for guiding fuel feed flow to the flow distribution area (120). The fuel flow stack arrangement comprises flow restriction orifices (126, 136) opened to the flow distribution area (120) and to the flow outlet area (131), and a gasket structure (128) over the flow restriction orifices (126, 136), and height of the flow restriction orifices (126, 136) is determined by a distance from at least one of a bottom (132) of the flow distribution area (120) and of the flow outlet area (131) to a bottom (133) of the gasket structure (128) to stabilize flow distribution in the repetitious structures (138) of the stack having tolerance variations in electrolyte element structure thickness. |
