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

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The discussion centers on the difficulty in finding thermo properties data for the refrigerant R-144a. Participants mention that while R-143a and R-134a data are available, R-144a seems elusive, with some questioning its existence. The NIST database is highlighted as a valuable resource for fluid properties, although it now requires purchase for full access. Users share links to the NIST website and other resources that may assist in finding relevant data. Overall, the conversation emphasizes the challenges of sourcing specific refrigerant information and points to NIST as a key reference.
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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.
 
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Never seen anything on R-144a...R-143a I have, but not 144a.
 
How about R-134a? I have not heard of either of those.
 
FredGarvin said:
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.
 
There's a 143a? Huh. Ya learn something new every day.
 
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.
 
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.
 
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
 
stewartcs said:
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/
 
  • #10
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.
 
  • #11
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  • #12
Thank you for this great topic
And you will find more information on this subject

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

Thank you over again
 
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