Estimating Nitrogen flow from a resevoir(buffer)

[cnnn]

I have a system where a Nitrogen compressor pressurises a buffer 40m3 buffer between 25 and 40 bar which in turn supplies the plant at 20 bar. How do I estimate the gas flow rate to the plant if the buffer pressure drops from 40bar to 30 bar.
Thanks
sn

 

[quark]

Cnnn!

I will give you some approximate method which I have been following. (Make sure that your compressor is not pumping nitrogen into the tank - simply shut of the valve)

You have a receiver capacity of 40 cu.m and the pressure is 40 bar. At atmospheric pressure it would be 1600 cu.m
(40 bar*40 cu.m). When the pressure reduces to 30 bar there is 1200 cu.m (30 bar*40 cu.m). So your net flow out is
400 cu.m. Note down the time for the pressure drop. Devide the flow (1200) with the time and you will get flow rate.

Note: I considered 30 and 40 bar as absolute pressures. If not add 1.01bar to both.

Regards,

Truth: Even the hardest of the problems will have atleast one simple solution. Mine may not be one.

 

[Lakeshore]

You need to actually measure the flow rate, not estimate it. I assume this is for a burner integrated into a boiler, or another process? There are many devices out there that will help you...