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Air Compressibility Factor

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#1 Mohamed cage

Mohamed cage

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Posted 31 March 2019 - 01:52 PM

I need to calculate the volume of screw compressor in Nm3/h , so based on gas low i have :



where V in [m3/h]; P in [ atm abs ] ; T in [K] , and i need V2 in [Nm3/h]


the problem is that i need to calculate the compressibility factor Z  to get V2. i didn't find any helpful document for my case .


#2 breizh


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Posted 31 March 2019 - 05:49 PM

Hi ,

Did you consider your favorite search engiine ?

an example:



you may also use the excel sheet attached .


anyway it should be very close to 1.


Good luck


Attached Files

Edited by breizh, 01 April 2019 - 01:13 AM.

#3 thorium90


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Posted 01 April 2019 - 07:00 AM

I found this website very useful. Maybe it might be helpful for you as well. Let me know if you need more info.



#4 Mohamed cage

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Posted 01 April 2019 - 03:49 PM

thank you . it's close to 1 so i will consider it as ideal .

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