compressibility of Oxygen

[turduckin]

I need to determine the compressibility of Oxygen at 100psig and 100F. Where can I find this information?

 

[katmar]

At this temperature and pressure Oxygen can pretty much be taken as an ideal gas. I suppose it all depends on what you are trying to calculate and how accurate you want to be.

I have written a units conversion program called Uconeer (which is freeware) that will estimate the compressibilty of several common gases using Peng-Robinson. This is often accurate enough for day-to-day calcs like pipe sizing. You can download the program for free from

http://katmarsoftware.com

An alternative is to use the NIST page at

http://webbook.nist.gov/chemistry/

This will calculate the density of your gas at the stated temperature and pressure, and you can back-calculate the compressibility from that if you need it.

Harvey

Katmar Software
Engineering & Risk Analysis Software

http://katmarsoftware.com

 

[DickRussell]

Confirming that assumption of ideal gas, using SRK I get Z=0.9967.

 

[rbcoulter]

And with Peng Robinson I get Z = 0.993. Just curious, why do you need to know the compressibility? Relief valve sizing?