Pressure Ratio in Multi-Stage Reciprocating Compressor
Pressure Ratio in Multi-Stage Reciprocating Compressor
(OP)
As a general observation in multistage reciprocating compressor (API 618), pressure ratio of initial stage (low pressure stages) is higher compare to final stage (high pressure stage). e.g. for 2-stage compressor, pressure ratio for 1st stage is 1.9 and pressure ratio of 2nd stage is 1.5.
Why?
Why?





RE: Pressure Ratio in Multi-Stage Reciprocating Compressor
If it ain't broke, don't fix it. If it's not safe ... make it that way.
RE: Pressure Ratio in Multi-Stage Reciprocating Compressor
T(in) = 80°F
T(first disch) = 271°F
T(interstage out) = 120°F
T(second disch) = 325°F
That last number is higher than most people will allow. Shifting the load just a bit to the first stage fixes that.
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
RE: Pressure Ratio in Multi-Stage Reciprocating Compressor
http://www.tech.plym.ac.uk/sme/THER205-web/recips....
This doc also mentions hitting the temperature wall.
If it ain't broke, don't fix it. If it's not safe ... make it that way.