I am a second year engineering student out on my first co-op work term. My supervisor's first task for me was to calculate the flow rate of one of his parts that he will use on a system that he is designing. I hooked up the part to a compressed nitrogen tank initially at 6,000psi. I cracked open a valve for 20 seconds and allowed the nitrogen to bleed out of the tank without any restriction except for what was flowing through the part. After 20 seconds, I closed the valve and read the pressure to be 2600psi. I tried to calculate the flow rate using PV=znrt but I got an extremely high flow rate of 28,000L/min. I don't think that this flow rate is correct. Am I approaching the problem the right way with using the ideal gas law?? any suggestions??? Thanks in advance.(adsbygoogle = window.adsbygoogle || []).push({});

This is what I know (my supervisor says that this is all the info that I need to calculate the flow rate):

Initial pressure: 6000psi

Final pressure: 2600psi

Time for pressure drop: 20 seconds

Nitrogen tank volume: 42liters

Test was done at 25 degrees C

inside diameter of part: 3/8"

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# Flow rate calculation using pressure difference and time

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