PILE A COMBUSTIBLE INCORPORANT UNE CHAUDIERE A CIRCULATION NATURELLE

摘要

1320275 Fuel cell and steam reformer system UNITED AIRCRAFT CORP 29 Nov 1971 [16 Dec 1970] 55332/71 Heading H1B A system in which hydrogen fuel for a fuel cell 2 is derived from a hydrocarbon fuel steam reformer 22 and in which heat derived from cooling the fuel cell is used to generate steam for the reformer comprises an upper steam drum 16 and a lower water drum 18 connected by a downcomer 20, a riser 19 from the lower drum being connected to cooling passages 14 in the fuel cell. The steam in line 32 passes through a superheater 24 to the reformer reactor 28, an ejector 26 in the line mixing hydrocarbon fuel with the steam. Hydrogen from the reactor passes through a shift converter 30 and line 38 to the fuel chambers 10. Additional heat is given to the water by passing the hydrogen line 38 and reactor exhaust line 40 through the drum 18; alternatively, these lines may pass through the drum 16. The water circulates by natural convection.