Centrifugal Compressor Discharge Pressure
Centrifugal Compressor Discharge Pressure
(OP)
Does anyone have an idea about the proper design discharge pressure of a big centrifugal compressor (Driven by 60MW steam turbine). I think API calls for shut off pressure that is much higher than the max operating discharge pressure. If this is the case, piping and downstream equipment located within the compressor envelope shall be designed to the shut off pressure and PSVs set points will be close to this with some margin (buildup pressure).
Any help or experience is appreciated
Regards
Any help or experience is appreciated
Regards





RE: Centrifugal Compressor Discharge Pressure
what is the design and test pressure of the compressor?
regards,
roker
RE: Centrifugal Compressor Discharge Pressure
I don't understand this comment "I think API calls for shut off pressure that is much higher than the max operating discharge pressure". What does the API standard you are referring to state?
What is your question?
RE: Centrifugal Compressor Discharge Pressure
TD2K : I know shut off pressure is much higher than the max operating pressure and this what I did mention in the question,
Actually I don't recall which API standard that calls for designing the stages based on the shut off pressure, and if this is mentioned somewhere in the well known standards, then the piping and equipment downstream of the last stage of centrifugal compressor will be designed based on the shut off pressure.
Now, we have considered the max operating pressure with a safety factor of about 10% for the design pressure of downstream piping and equipment.
Regards
RE: Centrifugal Compressor Discharge Pressure
RE: Centrifugal Compressor Discharge Pressure
Use a spreadsheet