Thermodynamic Properties of high pressure gases

0507476h

Hi,

Anyone know where I can find thermodynamic properties of gases at high pressure? More specifically I need to find the kinematic viscosity or the absolute viscosity of air at around 300 degrees Kelvin and 330 bar.

Cheers

minger

It depends on what gas and who you talk to. All the major aerospace companies for example have their own version of air tables (for high temp/high pressure). They can vary quite significantly.

Mech_Engineer

NIST Thermophysical Properties of Fluid Systems should have the data you're after. Otherwise, a thermodynamic properties of air table at the local school library would have it too. You might even be able to find a table online if you search in google for "themodynamic properties of air."

stewartcs

Air @ 300 K and 330 bar:

Kin. Viscosity = 0.00000090477 (ft²/s)

CS

0507476h

Thank-you for this, could you tell me how you calculated/where you found this data? Just so I can do it for myself in future as I reckon I will have a range of other pressures and temps to calculate kinematic viscosity for in future.

Thanks

stewartcs

NIST has a program called REFPROP 8.0 that gives this information. Check the link above from Mech_Engineer and they will probably have a link for it. It cost $200 for copy last time I checked.

CS

bejanaria

Hi
I used ASPEN to find the answer
At 300K and 330 bar
Dynamic Viscosity=0.0299 cp =2.99e-5 Pa.sec
Kinematic Viscosity=8.566e-8 m^2/sec