Supercritical CO2 properties versus P & T

[drFCraft]

I'm looking for quality data on the density of supercritical CO2 as a function of Temperature and Pressure. Can anyone guide me to a reliable website, or property databook?

Any help appreciated.

 

[sailoday28]

Have you tried NIST?

 

[drFCraft]

Thanks, found it. Totally forgot about NIST :/

 

[stevethermo]

Just checking the NIST site...it looks like NIST has expanded the coverage of their database significantly, to about 70+ light gases, hydrocarbons up to C10, and refrigerants. Besides CO2, there is methanol, ammonia and others.

Here is the link for completeness:

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

From the NIST Chemistry Webbook, scroll down and click on
Thermophysical Properties of Fluid Systems

Then select the pure component from the drop-down list.

I believe that these equations are also in the REFPROP software, also from NIST.

 

[drFCraft]

Brilliant site, just awesome, but how rigorous are the calculations? Can it be used in,say, a publication?
Seems almost to good to be true that a java applet can churn out data like this...

 

[Montemayor]

The direct, straight path to accurate, recognized, and authoritative Thermophysical Properties of Fluid Systems is:

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

For quite some years now we’ve been recommending engineers – especially young grads – to use these free and authoritative sources of necessary engineering data. Just some of the past Eng-Tips threads that reflect this are:

thread124-171790

thread135-170032

thread135-145412

thread391-161822

thread391-155157

thread378-150046

thread378-92938

This is a great site for:

1) Density;
2) Cp;
3) Enthalpy;
4) Internal energy;
5) Viscosity;
6) Joule-Thomson coefficient;
7) Specific volume;
8) Cv;
9) Entropy;
10) Speed of Sound;
11) Thermal conductivity; and,
12) Surface tension (saturation curve only).

For 34 compounds. It's an excellent site for Thermodynamic data; it’s free, tax-paid, authoritative, accurate, recognized, and you can take it to court as your basis for calculations and engineering decisions. Who would argue against using it as a basis for calculations? It's as authoritative as you are going to get.