| 摘要 |
PURPOSE:To reform fuel gas exhausted from an upper stream fuel cell, supply it a downstream fuel cell as fuel gas to increase power generation efficiency, and utilize by-product heat to reform fuel gas by installing a heat supply means which heats a reformer. CONSTITUTION:A reformer 6 is formed in such a way that its piping line passes inside an oxidizing gas piping line 9 for the oxidizing gas exhausted from an upper stream fuel cell 4, and an oxidizing gas piping line 8 is arranged so that a heat supply means which supplies heat of oxidizing gas exhausted to the reformer 6 is formed. Thereby, fuel gas exhausted from an upper stream is reformed by the reformer 6, and again supplied to a downstream fuel cell as fuel gas to prevent power generating efficiency drop, and moreover by-product heat of fuel cells 4 and 5 is utilized to effectively reform fuel gas. |
