lib.mEoS.R134a¶
Fluid info¶
CAS Number: 811-97-2
Formula: CF3CH2F
Synonym: R134a
Molecular weigth: 102.032 g/mol
Tc: 374.2100 K
Pc: 4.0593 MPa
ρc: 511.9000 kg/m³
Tt: 169.8500 K
Tb: 247.0760 K
Acentric factor: 0.32684
Dipole moment: 2.0580 Debye
Equation of state¶
Tillner-Roth, R., Baehr, H.D.; An International Standard Formulation for the Thermodynamic Properties of 1,1,1,2-Tetrafluoroethane (HFC-134a) for Temperatures from 170 K to 455 K at Pressures up to 70 MPa. J. Phys. Chem. Ref. Data 23(5) (1994) 657-729, http://dx.doi.org/10.1063/1.555958
Huber, M.L., McLinden, M.O.; Thermodynamic Properties of R134a (1,1,1,2-tetrafluoroethane). International Refrigeration and Air Condictioning Conference, Paper 184, pag. 453-462, 1992.
Span, R., Wagner, W.; Equations of State for Technical Applications. III. Results for Polar Fluids. Int. J. Thermophys., 24(1) (2003) 111-162, http://dx.doi.org/10.1023/A:1022362231796
Astina, I.M., Sato, H.; A Fundamental Equation of State for 1,1,1,2-tetrafluoroethane with an Intermolecular Potential Energy Background and Relialbe Ideal-Gas Properties. Fluid Phase Equilib., 221 (2004) 103-111, http://dx.doi.org/10.1016/j.fluid.2004.03.004
Sun, L., Ely, J.F.; Universal equation of state for engineering application: Algorithm and application to non-polar and polar fluids. Fluid Phase Equilib., 222-223 (2004) 107-118, http://dx.doi.org/10.1016/j.fluid.2004.06.028
Huber, M.L., Ely, J.F.; An Equation of State Formulation of the Thermodynamic Properties of R134a (1,1,1,2-Tetrafluoroethane). Int. J. Refrig. 15(6) (1992) 393-400, http://dx.doi.org/10.1016/0140-7007(92)90024-o
Viscosity¶
Huber, M.L., Laesecke, A., Perkins, R.A.; Model for the Viscosity and Thermal Conductivity of Refrigerants, Including a New Correlation for the Viscosity of R134a. Ind. Eng. Chem. Res., 42(13) (2003) 3163-3178, http://dx.doi.org/10.1021/ie0300880
Quiñones-Cisneros, S.E., Deiters, U.K.; Generalization of the Friction Theory for Viscosity Modeling. J. Phys. Chem. B, 110(25) (2006) 12820-12834, http://dx.doi.org/10.1021/jp0618577
Thermal Conductivity¶
Perkins, R.A., Laesecke, A., Howley, J., Ramires, M.L.V., Gurova, A.N., Cusco, L.; Experimental Thermal conductivity Values for the IUPAC Round-Robin Sample of 1,1,1,2-tetrafluoroethane (R134a). NIST Interagency/Internal Report (NISTIR) - 6605
Calculation example¶
Using the first option for equation of state, we can get this diagram plots with the liquid-gas saturation region:
The diagram is generated with this module
running with the compound name as parameter or edited in file
python3 plotMEoS.py R134a