| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell system capable of quickly taking out the necessary amount of heat when required, and enhancing the responsiveness and efficiency of a fuel reforming part. SOLUTION: A bypass circuit 15 branched from just behind a selective oxidation reactor 7 (a selective oxidation catalyst) is installed, a flow control valve 19 is installed in the bypass circuit 15, and the reformed gas coming out of the selective oxidation reactor 7 is directly supplied to a combustor 11 without passing through a fuel cell stack 9. When a load is increased in acceleration, the second flow control valve 19 is opened to decrease the supply amount of the reformed gas to the fuel cell stack 9, and taking out of power (power generating amount) from the fuel cell stack 9 is temporarily limited, the reformed gas equivalent to the limited power supply is directly supplied to the combustor 11 through the bypass circuit 15. The calorific value in the combustor 11 is increased, evaporation of methanol and water in an evaporator is accelerated, and the responding capability in a combustion reforming part 1 (especially in a fuel reformer 3) is enhanced. |
