How to calcuate the pressure calculation
How to calcuate the pressure calculation
(OP)
Hello,
I would like to know how to calculate the situation below.
There is a pipe which have 10 holes having 8 mm diameter.
The pipe is 5 meter long and inside diameter of the pipe is 10mm . The holes on the pipe are evenly devided.
The pipe is located 50 mm high from the bottom of a tank which has water 5 meter high.
5 bar.g air is fed into the one side of the pipe and the other side of the pipe is blocked. Therefore air can be blown out only through the 10 holes.
I want to know pressures at the each hole and how to calculate it.
It would be highly appreciated if anyone help me.
I would like to know how to calculate the situation below.
There is a pipe which have 10 holes having 8 mm diameter.
The pipe is 5 meter long and inside diameter of the pipe is 10mm . The holes on the pipe are evenly devided.
The pipe is located 50 mm high from the bottom of a tank which has water 5 meter high.
5 bar.g air is fed into the one side of the pipe and the other side of the pipe is blocked. Therefore air can be blown out only through the 10 holes.
I want to know pressures at the each hole and how to calculate it.
It would be highly appreciated if anyone help me.





RE: How to calcuate the pressure calculation
RE: How to calcuate the pressure calculation
Thanks
RE: How to calcuate the pressure calculation
RE: How to calcuate the pressure calculation
Thanks
RE: How to calcuate the pressure calculation
Diameter of the hole size is 2 mm not 8 mm.
RE: How to calcuate the pressure calculation
Best regards
Morten
RE: How to calcuate the pressure calculation
RE: How to calcuate the pressure calculation
Happy computing,
Doug
RE: How to calcuate the pressure calculation
The condition above is simplized in order to ease calculation. Actual status is that sum of all cross sectional area of the holes are much bigger than the head's.
therefore the current situation of our plant is that there is no flow at the last hole. So I have to reduce the quanity of the holes. If I learn how to calculate the pressure drop at each hole, I can decide the quantity of the holes.
I would really appreciate it if anybody including djack77494 solves my problem.
Thank you in advance.
RE: How to calcuate the pressure calculation
Are you sure that the pressure in the header IS 5 barg? If the total flow is higher than your max. supply rate then thepressure may actually be lower?
You can use the API 520 formula to calculate flow from a single hole (sec 3.6.2 or if you dont have API 520 check out the
Best regards
Morten
RE: How to calcuate the pressure calculation
sorry for confusing you.
I don't know the pressure of head since there is no gauge. 5 bar.g air is indicated from 10 meters long from the head.
Unluckily, I don't have API520, could you help me out?
With best regards,
RE: How to calcuate the pressure calculation
http
note that this is supplied free from the vendor.
Best regards
Morten
RE: How to calcuate the pressure calculation
A sealed tank is filled with gaseous CO2 at 200F and 200Psi.
Is there any substance which if introduced in the tank could react with CO2 and reduce the pressure?
Thanks
Gio1
RE: How to calcuate the pressure calculation