Patent ID: 6370878
Filing Date: 2002-04-16
Classification: H01M,Y02E

Abstract:
A fuel cell system, comprising:a fuel cell stack which during operation generates electrical energy by reacting a first stream of reactant gas and a second stream of reactant gas, the fuel cell stack also producing a fuel cell exhaust stream; an oxidizer unit positioned to receive the fuel cell exhaust stream, the oxidizer unit oxidizing at least a part of the fuel cell exhaust stream during operation to produce an oxidizer exhaust stream; a heat recovery system positioned to receive the oxidizer exhaust stream during operation, the heat recovery system transferring at least some heat from the oxidizer exhaust stream to an input stream to generate a heated input stream; a control system to maintain the heated input stream at a target temperature by controlling a first amount of the heat from the oxidizer exhaust stream that is transferred to the input stream.