| 摘要 |
1537082 Pressurized fuel cell UNITED TECHNOLOGIES CORP 10 Feb 1976 [12 Feb 1975 (4)] 05061/76 Heading H1B A fuel cell stack includes a plurality of fuel cells connected electrically in series through a load, each cell having a cathode electrode, an anode electrode, an electrolyte therebetween, a cathode gas space on the non-electrolyte side of the cathode, and an anode gas space on the non-electrolyte side of the anode, and has compressor means powerable by the energy of a hot pressurized gas for compressing air to above atmospheric pressure, means for delivering air from said compressor means into said cathode gas space, means for delivering pressurized fuel into said anode gas space, and means for delivering waste energy produced by the fuel cell into the compressor means in the form of a hot gas. In the embodiment shown, air enters compressor 38 and compressed air passes to air box 25 and thence to cathode gas space 30, or to burner 36; here the air and fuel from 75 serve to heat reactor 34, wherein steam and fuel from 60 react to produce H 2 -rich gas which feeds anode gas space 32; the effluent from reactor 34 (pipe 77), cathode gas space (73) and anode gas space (pipe 72) all are delivered to turbine 40, which drives compressor 38. A pump 69 pumps liquid through portion 15 of the stack; the hot liquid heats boiler 20; in boiler 20 water condensed from the cathode effluent 18 is boiled to produce the steam for reactor 34. In modifications, the fuel is treated in a shift converter and selective oxidizer, or the cell is able to run at less than full power without depressurizing the system by virtue of a bypass air leg, the by-passed air being heated and recycled to the turbine. The oxidant is air, the fuel is H 2 , and the electrolyte is H 3 PO 4 , metal oxide or solid polymer may be used. |
