For a 150m3 storage tank, how long does it take to increase the pressure from 0 MPaG to 0.15 MPaG?

At 0.15 MPa, this corresponds to 225 cubic meters of nitrogen. The capacity of your nitrogen generator, as well as the pressure in the nitrogen storage tank when there is an adequate supply of nitrogen, and the diameter of the inlet pipe, all have an impact on this value. The simplest way is to check the time after it’s fully charged

Hello, OP: For your problem to be solved, some additional conditions are needed. What is the rate at which nitrogen is introduced (volumetric flow rate)? What is the ambient temperature? What is the shape of your storage tank? Essentially, your problem falls under unsteady-state material balance. It can be assumed that the gas obeys the ideal gas law, and at any time t, the air concentration in the tank is xvol%. (1) The differential balance equation for nitrogen with the storage tank (assumed to be a spherical tank) as the system of interest is d(Vx)/dt = m_in – m_out; x = -m_outx. By substituting 150 m3 and the assumed volumetric flow rate into this equation, a differential equation is obtained ； By substituting the initial conditions into the integration of the above differential equation, the solution can be found. I hope my answer can help you.

I’m not sure if the original poster really wants to apply pressure or just wants to do some calculations in this area. If it’s the former, it’s a matter of a few minutes – is there any need for such complexity? Simply add nitrogen to pressurize it, note down all the conditions as well as the time at which pressurization is completed; that way, you’ll have the most accurate data for the next time. Practice is the father, knowledge is the son, and creation is the grandson; sometimes one should not be too dogmatic.

I can’t do the calculations; to ensure safety, it’s recommended to try it on-site