A fuel cell system that employs a recuperative heat exchanger to provide additional cooling for the compressed charge air applied to the cathodes of the fuel cells in the fuel cell stack. The cathode exhaust gas is applied to the recuperative heat exchanger so that the cathode exhaust gas cools the charge...http://www.google.es/patents/US7276308?utm_source=gb-gplus-sharePatente US7276308 - Fuel cell system with recuperative heat exchanger
