| 摘要 |
PURPOSE:To uniformize a temperature distribution inside a single cell by disposing cooling pipes, sequentially varying the diameters of the pipes, so as to narrow a cooling pipe on the inlet side of oxidizer gas and to widen a cooling pipe on the outlet side of the oxidizer gas. CONSTITUTION:A cooling body 3 is formed by a cooling base 4, a plurality of cooling pipes 5 each of which passes through the cooling base 4 longitudinally and an inlet header 6 and an outlet header 7 both of which connect the cooling pipes 5 to one another. A sintered carbon plate is employed as the cooling base 4 by reason of heat resistance, temperature expansion and corrosion resistance and the cooling pipes 5 each of which comprises a stainless steel pipe covered with a phosphoric-acid resisting film are embedded in the cooling base 4. The cooling pipes 5 are so disposed that the diameters of the cooling pipes 5 are sequentially varied in such a manner that an air inlet side cooling pipe 5a is narrow and an air outlet side cooling pipe 5b wide so that temperature distribution is thus uniformized over the whole area of a single cell 1. |
