Help me please about fluid flow calculation
 

I want to know how to roughly calculate time for pressurize vessle with N2 from 0 barg to 5 barg using the source N2 constant pressure at 7 barg with a distance of pipe between these two source about 80 m. Which equation can solve this? Please help me

Re: Help me please about fluid flow calculation
 

Try thermodynamics.

Set up a system and evaluate the process. I would assume this is adiabatic process. Then find dP/dt and dV/dt relation.