| 摘要 |
An arrangement and process are provided for regulating the humidification or dew point of inlet air supplied ( 124, 224, 324, 424 ) to combustion-supported reaction means ( 20, 120 ) of a fuel processing system in a fuel cell power plant ( 110, 210, 310, 410 ). In addition to flowing exhaust gas(es) ( 28, 128 ) in heat and energy exchange relation with inlet air through a primary energy recovery device (ERD) ( 30 ) of the gas/gas type, a supplemental ERD ( 50 ) of the gas/liquid (water) type uses water temperature to passively condense moisture from a gas stream, either of inlet air or of exhaust gas, to regulate the dew point of the air supplied to the combustion-supported reaction means ( 20, 120 ). The supplemental ERD ( 50 ) may have a gas channel ( 134 ) and a water channel ( 132 ) separated by an enthalpy exchange barrier ( 136 ), and may be relatively upstream or downstream of the primary ERD ( 30 ) relative to the flow of inlet air through the latter to regulate dew point indirectly or directly, respectively.
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