Latexman, a "squeezer" is what we call our mechanical vice that literally squeezes the Poly Ethylene Pipe shut. It can then be released slowly and the pipe bounces back to full diameter. It would be used in the same way a stopper is on a steel line.
zdas04/ione thanks for your thoughts. I...
It sounds like I need to discuss this with the makers of the program. It makes sense to me that if your velocity is changing throughout the pipe, then so should the volumetric flow rate. Yet the model gives a standard flow rate, and it is identical in all the segments of the pipe.
Assuming for...
I can give an actual problem. It will all be SI (canadian...).
Starting pressure (source node)P1 = 500 kPa (gauge)
End pressure (flare stack outlet) P2= 0 kPa (gauge)
Pipeline inner diameter D1 = 137.74 mm
Pipeline length L1 = 900 m
60 mm PE Ball Valve V1 constant = 25 m3/hr-kPa
Purge Hose...
Thanks zdaso4. That was my theory as well. The modelling software I use calculates flow using your standard flow equation. I am *assuming* that it uses a similar formula for velocity as to how I posted. I could not find any info in the user guide, however I will be contacting the programmers to...
Hi LittleInch,
My apologies, I made a mistake in the formula. It is:
v=14.7349(Qb/D2) * (Pb/Tb) * (ZT/P)
v=velocity (m/s)
Qb=flow rate (m3/hr) at standard conditions
Pb= base pressure kPa
Tb=base temperature K (273 + degrees celcius)
P=pressure kPa
T=average gas flowing temperature K(273 +...
Hello,
I have a quick question that I cant seem to get an answer to. The velocity for gas in a pipe is calculated taking into account temperature and pressure:
v=14.7349(Qb/ds)(Pb/Tb)(ZT/P)
I understand this to be the velocity of a gas particle on a streamline travelling from point a to...
