Gas velocity in pipe
Gas velocity in pipe
(OP)
Does anyone know where I can find any information in relation to the max velocity in gas pipes/ pipe is steel, delta P=12MPa, Dia 100mm. I have a reference of kinetic energy of 20,000kg/ms^2, which looks like it should be 200,000kg/ms^2!!
The line is a by pass line around a 900mm ball valve.
The line is a by pass line around a 900mm ball valve.





RE: Gas velocity in pipe
API (and others) have since published other limits, contingent upon other factors such as dryness, solids entrained, etc. For clean, dry gas the "C" value might indeed be higher than 122, but I rarely see C = 447.
Regards,
SNORGY.
RE: Gas velocity in pipe
RE: Gas velocity in pipe
For an intermittently used bypass around a block valve, I would be inclined not to even worry too much about a velocity limit, unless you are laden with solids.
Regards,
SNORGY.
RE: Gas velocity in pipe
As far I know,NORSOK P-001 states V=K(1/density)^0.43, K-175, d-gas density in kg/m3 and velocity in m/s or 60 m/s whichever is lowest.
API and NORSOK is conservative..
If your application is intermittent,you can even exceed 60 m/s provided you have taken care of vibration/noise issues..
Regards
UKD