R12

References

Equation of State

Volker Marx, Andreas Pruss, and Wolfgang Wagner. Neue Zustandsgleichung für R 12, R 22, R 11 und R 113 - Beschreibung des therodynamischen Zustandsverhaltens bei Temperaturen bis 525 K und Druücken bis 200 MPa. Volume 19. VDI Verlag, 1992.

Thermal Conductivity

Mark O. McLinden, Sanford A. Klein, and Richard A. Perkins. An extended corresponding states model for the thermal conductivity of refrigerants and refrigerant mixtures. Int. J. Refrig., 23:43–63, 2000. doi:10.1016/S0140-7007(99)00024-9.

Viscosity

S.A. Klein, M.O. McLinden, and A. Laesecke. An improved extended corresponding states method for estimation of viscosity of pure refrigerants and mixtures. Int. J. Refrig., 20:208–217, 1997. doi:10.1016/S0140-7007(96)00073-4.

Surface Tension

A. Mulero, I. Cachadiña, and M. I. Parra. Recommended Correlations for the Surface Tension of Common Fluids. J. Phys. Chem. Ref. Data, 41(4):043105–1:13, 2012. doi:10.1063/1.4768782.

Molecular Structure

R12 — 3D conformer (interactive: click and drag to rotate)

Fluid Information

Parameter, Value
General
Molar mass [kg/mol]	0.120913
CAS number	75-71-8
ASHRAE class	A1
Formula	CCl2F2
Acentric factor	0.1794783173435512
InChI	InChI=1S/CCl2F2/c2-1(3,4)5
InChIKey	PXBRQCKWGAHEHS-UHFFFAOYSA-N
SMILES	C(F)(F)(Cl)Cl
ChemSpider ID	6151
Limits
Maximum temperature [K]	525.0
Maximum pressure [Pa]	200000000.0
Triple point
Triple point temperature [K]	116.099
Triple point pressure [Pa]	0.2425508006881145
Critical point
Critical point temperature [K]	385.1199997681344
Critical point density [kg/m3]	565.000000544773
Critical point density [mol/m3]	4672.781260449852
Critical point pressure [Pa]	4136165.62843796

REFPROP Validation Data

Note

This figure compares the results generated from CoolProp and those generated from REFPROP. They are all results obtained in the form \(Y(T,\rho)\), where \(Y\) is the parameter of interest and which for all EOS is a direct evaluation of the EOS

You can download the script that generated the following figure here: (link to script), right-click the link and then save as… or the equivalent in your browser. You can also download this figure as a PDF.

Consistency Plots

The following figure shows all the flash routines that are available for this fluid. A red + is a failure of the flash routine, a black dot is a success. Hopefully you will only see black dots. The red curve is the maximum temperature curve, and the blue curve is the melting line if one is available for the fluid.

In this figure, we start off with a state point given by T,P and then we calculate each of the other possible output pairs in turn, and then try to re-calculate T,P from the new input pair. If we don’t arrive back at the original T,P values, there is a problem in the flash routine in CoolProp. For more information on how these figures were generated, see CoolProp.Plots.ConsistencyPlots

Note

You can download the script that generated the following figure here: (link to script), right-click the link and then save as… or the equivalent in your browser. You can also download this figure as a PDF.

Flash consistency (HEOS): 4 inconsistent, 0 exceptions, 0 bad-phase across 1 input pair(s).

Download full failure list (CSV)

Failing state points (sample, up to 20 per pair/class)

Pair	Class	Region	P [Pa]	T [K]	In1	Val1	In2	Val2	Error
DmolarP	INCONSISTENT	1phase	0.701689	117.199	Dmolar	15101	P	0.701689
DmolarP	INCONSISTENT	1phase	1.18756	117.199	Dmolar	15101	P	1.18756
DmolarP	INCONSISTENT	1phase	3.40154	127.655	Dmolar	14871.8	P	3.40154
DmolarP	INCONSISTENT	1phase	0.414605	117.199	Dmolar	15101	P	0.414605

Superancillary Plots

The following figure shows the accuracy of the superancillary functions relative to extended precision calculations carried out in C++ with the teqp library. The results of the iterative calculations with REFPROP and CoolProp are also shown.

Note

You can download the script that generated the following figure here: (link to script), right-click the link and then save as… or the equivalent in your browser. You can also download this figure as a PDF.