Leakage rate through an orifice
Leakage rate through an orifice
(OP)
Hello,
I have a production flow line (8") flowing with a pressure of 8 barg,65 deg C,density of 100 kg/m3,velocity of 20 m/s and i would like to calculate the leakage rate through a 2" orifice.If there is a leakage,the segment that I will have by closing the sectionalisation valve will be 2m3.
I am wondering which formula to find the leakage rate.Can anybody help me out.
Regards,
UKD
I have a production flow line (8") flowing with a pressure of 8 barg,65 deg C,density of 100 kg/m3,velocity of 20 m/s and i would like to calculate the leakage rate through a 2" orifice.If there is a leakage,the segment that I will have by closing the sectionalisation valve will be 2m3.
I am wondering which formula to find the leakage rate.Can anybody help me out.
Regards,
UKD





RE: Leakage rate through an orifice
P1-P2=line pressure-atmospheric pressure,
v1=line velocity
then find velocity through orifie,v2.
calculate the flow rate=pi/4*di^2*v2
RE: Leakage rate through an orifice
See for example the Crane Technical Paper No 410
RE: Leakage rate through an orifice
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RE: Leakage rate through an orifice
Thanks for you answer.I am wondering by using bernoulli's equation, I will get steady mass flowrate which is the intial mass flow (peak rate).I would like to account the change in mass flow rate and upstream pressure with respect to time.
Could anyone suggest me how to do that?
RE: Leakage rate through an orifice
http://www.tp410.com/
HTH