Patent ID: 6663991
Filing Date: 2003-12-16
Classification: B33Y,F25B,H01M,Y02E,Y02P

Abstract:
A pressurized fuel cell system comprising:a. a fuel cell (98); b. a compressor-expander (70); c. an ejector (1); d. a boiler (94); wherein, pressurized and energetic products of reaction from said fuel cell (98) are conducted through a conduit (86) to the primary fluid inlet conduit (71) of said compressor-expander (70) wherein said products of reaction are de-energized and discharged from the system, said primary fluid imparting energy on a reactant-rich secondary fluid which is introduced to said compressor-expander through secondary fluid inlet conduit (72) and thereafter compressed in said compressor-expander (70) and discharging into said ejector (1) through a secondary fluid inlet conduit (3), said ejector (1) being energized by vapor conducted to the said primary fluid inlet conduit (2) and provided by said boiler (94); said reactant-rich secondary fluid being further pressurized in said ejector (1) and having the mixture of the said vapor primary fluid and said reactant rich secondary fluid discharged through an outlet conduit (4) into said fuel cell (98).