Thanks for the replies.
The gas being pumped is propane (single component therefore constant MW) the suction conditions range across the stages but taking the LP stage, about -40degC and atmospheric pressure.
Problem occurs when running the compressor down i.e. going from 100% operation to...
Does an increase in temperature on the suction side of a centrifugal compressor drive the compressor towards the surge region if the discharge pressure of the compressor remains relatively constant? And if so why?
