4 replies to this topic

[Mohammad.abubakr]

hi all,
i am trying to calculate pressure drop across pipe L=27000 m
and flow rate= 13600 m3/h
NG of density=105 kg/m3
and 60 c, p=1440 psig
D of pipe= 12 in
after calculation p drop is very large but actual pressure drop is 200 psi

[fallah]

hi all,
i am trying to calculate pressure drop across pipe L=27000 m
and flow rate= 13600 m3/h
NG of density=105 kg/m3
and 60 c, p=1440 psig
D of pipe= 12 in
after calculation p drop is very large but actual pressure drop is 200 psi

Please specify your procedure for pressure drop calculation.

[ankur2061]

hi all,
i am trying to calculate pressure drop across pipe L=27000 m
and flow rate= 13600 m3/h
NG of density=105 kg/m3
and 60 c, p=1440 psig
D of pipe= 12 in
after calculation p drop is very large but actual pressure drop is 200 psi

You are trying to calculate delta P in a pipeline for natural gas. Can you provide the composition of your natural gas composition or specific gravity of gas. Using single phase gas pipeline`equations such as AGA, Weymouth & Panhandle A/B the pressure drop can be calculated.

Regards,
Ankur.

[katmar]

The values you have given do predict an enormous pressure drop. The error is most likely in the flowrate of 13600 m³/h. This flowrate is most likely in Normal m³/h, and not at the flowing temperature and pressure. You need to find out the composition of the gas, or at least its molecular mass, so that you can work out the mass flow rate. Then you will get more reasonable pressure drop results.

[breizh]

Hi Mohammad ,

Let you try this link,

http://www.pdhengine...ages/O-5001.htm

Hope it helps

Breizh