| 摘要 |
PROBLEM TO BE SOLVED: To hold cathode-inlet and -outlet temperatures inside a fuel cell and a temperature difference between them to be same to conventional cells without cathode recycle, to reduce accessory power thereby to enhance plant efficiency, to reduce pressure loss in a cathode side, to raise oxygen concentration and carbon dioxide concentration required for a reaction, to enhance cell performance, to elongate a service life, and to eliminate a necessity of a heat exchanger for heating or cooling. SOLUTION: This facility is provided with a cooling plate 30 for a fuel cell inside a molten carbonate type fuel cell 22. The cooling plate 30 has a heat receiving space 33b heated by heat transfer from the fuel cell 22, and a preheating space 33a preheated by heat transfer from the heat receiving space 33b. Cathode gas 13 of a low temperature is preheated in the preheating space 33a, and then it is heated in the heat receiving space 33b upto a temperature suitable to the fuel cell 22 to be supplied to the cathode side of the fuel cell 22. For example, temperature difference as a whole is substantially treble by dringing a temperature of a cathode gas supplied to the cooling plate 30 to about 400 deg.C or less, cathode gas volume is reduced to about one third, and cathode gas recycle is substantially eliminated. |
