Patent ID: 8889318

Claim:
A power generating system comprising: a plurality of bipolar plates stacked to form a fuel cell assembly having an inlet side and a non-inlet side, wherein each of the plates includes (i) a surface defining a portion of a fuel cell assembly inlet header extending from the inlet side of the fuel cell assembly to the non-inlet side of the fuel cell assembly and passing through each of the plates, (ii) an active area, (iii) feed passageways, and (iv) an inlet transition area in fluid communication with the active area and the fuel cell assembly inlet header via the feed passageways, and wherein the feed passageways of the plates located proximate to the inlet side of the fuel cell assembly are generally smaller than the feed passageways of the plates located proximate to the non-inlet side of the fuel cell assembly such that, during operation of the fuel cell assembly, flow velocities of gas through the active areas are generally equal.