Patent ID: 6902838
Filing Date: 2005-06-07
Classification: H01M,Y02E

Abstract:
1. A fuel cell system comprising: a cooling fluid, a pump for pumping the cooling fluid in a liquid state to an elevated pressure, the pump being connected to a heat exchanger in a fuel cell, the fuel cell being connected to an expander to deliver the fluid to the expander, the expander being constructed to generate shaft work from the fluid flowing therethrough, and the expander being operatively connected to an air compressor to drive the air compressor and produce compressed air, the air compressor being connected to the fuel cell to deliver compressed air to the fuel cell, the expander being connected to a condenser to deliver the fluid to the condenser, the condenser being constructed to remove heat from the fluid and to change the fluid to the organic cooling fluid in the liquid state, the condenser being connected to the pump to deliver the liquid cooling fluid to the pump.