compressor CFM
compressor CFM
(OP)
I used a sonic nozzle to measure the flow rate of a compressor. The nozzle was located at the discharge of the compressor. I have found my flow rate in CFM with respect to the pressure drop and temperature at the nozzle. To my understanding this is CFM (not ICFM, ACFM, or SCFM). I want to convert this back to inlet conditions. Is there an equation to convert CFM to ICFM.





RE: compressor CFM
http://virtualpipeline.spaces.msn.com
RE: compressor CFM
RE: compressor CFM
pdv/dt=ZRTdm/dt
RE: compressor CFM
V2/V1 = (Z2/Z1)(P1/P2)(T2/T1)
T = temperature
P = pressure
V = volume
Z = compressibility factor
It doesn't matter in the slightest what you call each of the two volumes ... CFM, ICFM, ACFM, or SCFM. The only thing that matters is the pressure and temperature of each of the two volumes.
Milton Beychok
(Visit me at www.air-dispersion.com)
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RE: compressor CFM
Good luck,
Latexman
RE: compressor CFM
RE: compressor CFM
Click the link in my signature below and follow the links to the freeware program Uconeer - it does general engineering unit conversions in addition to the gas flow conversions.
Harvey
Katmar Software
Engineering & Risk Analysis Software
http://katmarsoftware.com
RE: compressor CFM
My real point is that we are not using an equation of state of PV=MRT but P dVdt=RT dMdt
For example in unsteady/transient flow, relating to scfm would be difficult and confusing?
RE: compressor CFM
RE: compressor CFM
What is the gas?