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#1




Volume of Air Under Pressure
I have a 1000Lt Compressed Air Receiver at 8Bar. How many liters of air is contained within the vessel.
Please may someone help me with a formula for this as I have different size vessels at different pressure to work out. Thanks please include units in your reply i.e. Bar, Liters, etc. Last edited by Crayber; 11152011 at 05:28 PM. Reason: additional info 
#2




Re: Volume of Air Under Pressure
Here's a start
http://en.wikipedia.org/wiki/Ideal_gas_law 
#3




Re: Volume of Air Under Pressure
Thank You HerrWarum
Unfortunately the page you sent me to is very complicated to the untrained eye. Does anybody know of a simplified version. I only need to know the volume (in liters or cubic meters) of air stored in a 1000Lt Air Vessel which is pressurized to 8Bar. my end result is the time it takes to release that volume of air if released at 370Lt/min. 
#4




Re: Volume of Air Under Pressure
Assuming it is being released at the same temperature it is stored at, you have a 1000L vessel at 8 Bar. You will eventually end up with 1000L left at 1.01 bar. (call it 1 bar).
Assuming you can control the release rate fairly precisely, you want to know how much time it takes to get from 8bar to 1 bar. Probably the easiest way of understanding this for your future reference is to ask yourself "If all my air was originally at 1 bar, how many 1000L containers would this occupy?"  As air pressure is almost directly proportional to content, the answer is about 8 1000L cylinders. (8000L) So your question is really, how long will it take to use up 7000L at the rate of 370L/min? 7000/370 = about 18 or 19 minutes. * this only applies to gases that obey the ideal gas law, air more or less does, as long as it is fairly dry. 
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