FUEL CELL COMPRESSOR SYSTEM
A multi-stage fuel cell centrifugal compressor system comprising a motor, including a shaft, and a compressor connected to the motor. The compressor includes a first stage inlet; first housing fluidly connected to the first stage inlet; and first impeller driven by the shaft for imparting fluid flow through a first stage of the system. The compressor further includes a first stage outlet fluidly connected to the first housing; a second stage inlet; a second housing fluidly connected to the second stage inlet; a second impeller for imparting fluid flow through a second stage; a second stage outlet fluidly connected to the second housing; and a pipe extending between the first stage outlet and the second stage inlet. The pipe fluidly connects the first stage outlet to the second stage inlet, thereby directing at least a portion of fluid from the first stage to the second stage of the system.