| 摘要 |
PURPOSE:To recover exhaust heat effectively, and utilize the recovered exhaust heat as power by cooling a regenerator on the air-electrode outlet side and a regenerator on the fuel-electrode inlet side, in that order, by means of a low- boiling-point medium used as a heat discharging loop, and driving a turbine by means of gas sent from a gas-liquid separator. CONSTITUTION:Power generation is carried out by supplying to a fuel-cell body 4, both a main fuel sent through a reformer 3, and air sent from a compressor 10 driven by a turbine 9. Here, a low-boiling-point medium is used as a cooling loop used for regenerators 11, 7, 5 and 15, and the regenerator 11 on the air- electrode outlet side, the regenerator 7 on the fuel-electrode outlet-side and the regenerator 5 on the fuel-electrode inlet side, in that order, are cooled. At the same time, power generation is performed by driving a low-boiling-turbine 19 by means of the gas separated with a gas liquid separator 18. After that, the exhaust medium is circulated after being condensed with a cooling tower 20 and increased in its pressure by means of a pump 21. By thus driving the turbine 19 while the regenerators 11, 7, 5 and 15 are properly located, the exhaust heat can be effectively recovered, and the efficiency of the fuel-cell generation plant can be enhanced. |
