How many kg of nitogen gas is required to fill a gas cylinder of 100l capacity to 25mpa pressure at 280k?
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Turns out my assumptions were wrong about the stated 9450 L of N2 gas. The 9450 L is the total volume of standard pressure gas compressed into the cylinder to 20 MPa.
Using V2=V1/(p2/p1) having p1=0.101 MPa, p2=20 MPa, V1=9450 L. The total volume of gas within the cylinder is about 47 L a reasonably fitting size for the cylinder dimensions.
Hence to answer my own question, at the pressure of usage (0.45 MPa) the volume of gas (using same equation as above) is 2121 L which at 60 cL/min equates to 59 h of flow roughly.
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