Fuel cell stack cooling system

Details Fuel cell stack cooling system Fuel cell stack cooling system

H - Electricity

01

M

62/92

H01M 8/04 (2006.01)

Patent

CA 1297310

- 14 - Abstract Fuel Cell Stack Cooling System Fuel cell stack coolant water is processed by moving the two-phase water/steam coolant exhaust through a steam separator wherein the water phase is separated from the steam phase. The water phase is then moved through a heat exchanger where its temperature is lowered to a subcooled level which is below the coolant operating temperature in the stack. A flow control valve is associated with the coolant heat exchanger to regulate water flow through and/or around the heat exchanger depending on the temperature of the water which leaves the steam separator. By subcooling the coolant before it reenters the stack, a lessening of electrolyte loss through evaporation is achieved. By eliminating steam condensation as a form of system heat rejection, system engineering is simplified and construction costs are lowered. C-1558

568234

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