| CPC B60L 58/33 (2019.02) [B64C 29/0016 (2013.01); B64D 27/24 (2013.01); H01M 8/04014 (2013.01); H01M 8/04029 (2013.01); H01M 8/04164 (2013.01); H01M 8/04738 (2013.01); B60L 2200/10 (2013.01); B64D 2033/024 (2013.01); B64D 2033/026 (2013.01); B64D 2033/0266 (2013.01); H01M 2250/20 (2013.01)] | 7 Claims |
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1. A hydrogen fueled thermodynamic fuel cell system for an aircraft, said system comprising:
an air pathway comprising one compressor, or two or more compressors configured in series;
a hydrogen pathway comprising one hydrogen expander, or two or more hydrogen expanders configured in series;
a liquid hydrogen pump, said liquid hydrogen pump configured to pressurize liquid hydrogen through said hydrogen pathway;
one or more heat exchangers configured to thermally couple said hydrogen pathway and said air pathway;
a fuel cell, said fuel cell fluidically coupled to said hydrogen pathway downstream of said one or more hydrogen expanders, said fuel cell fluidically coupled to said fuel cell air pathway downstream of said one or more compressors; and
a closed loop cooling system configured to cool said fuel cell, said closed loop cooling system comprising a cooling fluid and a pump.
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