A fuel cell system 1 comprises a fuel cell stack 10, an evaporator 21, a reforming device 22, a supercharger 23, an offgas heating device 24, and a catalytic combustion chamber 25. Offgas exhausted from the fuel cell stack 10 is burnt in the catalytic combustion chamber 25, and the burnt offgas is introduced...http://www.google.es/patents/US6692853?utm_source=gb-gplus-sharePatente US6692853 - Recovery system of heat energy in a fuel cell system
Recovery system of heat energy in a fuel cell system