Where can I find a thermo properties table for r-144a refrigerant?

[R_Schuette]

I have some equipment that uses an older refrigerant that I am having a hard time finding any uselful data on. It is r-144a, and if anyone has any idea as to where I could find a thermo properties table on this stuff, let me know. I've been looking everywhere, hundreds of websites, countless books, and nothing. Any info would be greatly appreciated.

 

[stewartcs]

Never seen anything on R-144a...R-143a I have, but not 144a.

 

[FredGarvin]

How about R-134a? I have not heard of either of those.

 

[stewartcs]

How about R-134a? I have not heard of either of those.

I have the properties for R-143a and R-134a if you need them.

 

[FredGarvin]

There's a 143a? Huh. Ya learn something new every day.

 

[stewartcs]

Yep. I have a NIST database full of useful information on fluids. NIST used to offer the data on their website, but they sell it now in a nice and tidy little program.

 

[R_Schuette]

I didn't double check when I posted, I actually need thermo properties on r-141b. Not sure if r-144a even exists. If the equipment used r-134a, this would be a lot easier, you can find those tables everywhere. Still, if anyone can tell me where to look for these tables, I would appreciate it.

 

[stewartcs]

R141b - CCl2FCH3 - 1,1-dichloro-1-fluoroethane

CAS#: 1717-00-6
Molar mass: 116.95 lbm/lbmol
Triple point temperature: -154.25 °F
Normal boiling point temperature: 89.69 °F
Critical point temperature: 399.83 °F
Critical point pressure: 610.9 psia
Critical point density: 28.627 lbm/ft³
Gas phase dipole at NBP: 2.014 debye
Acentric factor: 0.2195

Equation of State
Equation type: Helmholtz energy
Limits: -154.25 °F to 440.33 °F, 58015.0 psia, 91.7 lbm/ft³
Lemmon, E.W. and Span, R., "Short Fundamental Equations of State for 20 Industrial Fluids," J. Chem. Eng. Data, 51:785-850, 2006.

The equation has uncertainties of 0.2% in density between 180 and 400 K at pressures to 100 MPa, and 0.5% in density at higher pressures. The uncertainty in density may be higher as temperatures approach 400 K. Vapor pressures are represented with an uncertainty of 0.2% from 270 to 400 K. The uncertainty in speed of sound is 0.01% in the vapor phase and 0.5% in the liquid phase. Heat capacity data are not available to verify the equation of state, however, the uncertainties are estimated to be within 5 %.

Viscosity and Thermal Conductivity
Limits: -154.25 °F to 440.33 °F, 58015.0 psia, 91.7 lbm/ft³
Huber, M.L., Laesecke, A., and Perkins, R.A., "Model for the Viscosity and Thermal Conductivity of Refrigerants, Including a New Correlation for the Viscosity of R134a", Industrial and Engineering Chemistry Research, 42:3163-3178, 2003.

SOURCE: NIST Database

Hope this helps...

Chris

 

[Mech_Engineer]

Yep. I have a NIST database full of useful information on fluids. NIST used to offer the data on their website, but they sell it now in a nice and tidy little program.

RefProp is a very cool program. making your own thermodynamic tables is so very nice.

That being said, NIST does have a very large amount of fluid properties available online for free (including R-141b):

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

 

[stewartcs]

I knew they used to have that web database, I had lost the link though since I had the program.

Good to know they still offer it for free! RefProp has a lot more functionality than the web database though.

 

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[harsekooz]

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And you will find more information on this subject

On this link
"[URL
R-141b refrigerant[/URL]

Thank you over again