5 replies to this topic

[damaraju chaitanya]

Dear all,

 

Nitrogen is flowing inside a pipe of known size (say 1”) at a known pressure (say 1Kg/cm²). So my question is can we calculate velocity of nitrogen at this pressure? I need to calculate the flow rate.

Are there any chemical engineering correlations between pressure & velocity (as like ERGUN equation for packed beds)

 

Thanks & Regards

D.Chaitanya

[latexman]

Bernoulli's equation.  Be sure to study it's limitations though!  It may or may not apply very well to your case.

Edited by latexman, 24 June 2013 - 07:10 AM.

[breizh]

Consider this resource and any fluid dynamic textbook!

 

As you can see in the attachment you need to know the pressure in 2 points and the piping arrangement .

 

Breizh

Edited by breizh, 24 June 2013 - 05:37 PM.

[Steve Hall]

You're comparing apples and oranges. Like asking if you can know the temperature if given the pressure.

 

If you know the pressure at the beginning and the end of a pipe segment, then you could calculate the flow rate that results in the observed pressure drop. But that's a different question than the one you've asked.

[shan]

No. N2 flow may be various value at the same pressure condition.

[latexman]

Attach a sketch labelled with all the information you know and what you want to find out.