R22 !short name (same as file name) 75-45-6 !CAS number chlorodifluoromethane HCFC-22 !synonym1 R-22 !synonym2 86.468 !molecular weight [g/mol] 115.73 !triple pt temperature [K] 232.340 !normal boiling pt [K] 369.295 !critical temperature [K] 4990. !critical pressure [kPa] 6.05822 !critical density [mol/L] 0.22082 !acentric factor 1.458 !dipole moment [Debye]; Meyer & Morrison JCED 36:409 (1991) IIR !default reference state 6.001 !version number ! compiled by M. McLinden, NIST Thermophysics Division, Boulder, Colorado ! 01-30-96 MM, original version ! 02-01-96 MM, replace Kamei et al (1992) with Kamei et al (1995) ! 02-06-96 MM, add ECS model based on Huber & Ely (1994) ! 03-17-96 MM, add transport correlations compiled by S.A. Klein ! 03-18-96 MM, add dipole moment ! 06-17-96 MM, add ECS-thermal conductivity coefficients fitted by S.A. Klein ! 08-19-96 MM, add surface tension fit ! 10-03-96 MM, add Cp0 function of Kamei (replace temporary polynomial) ! 10-04-96 MM, specify no rho-dependent ECS coeff (compatibility with new model) ! 01-31-97 MM, change pointer for ECS reference viscosity from VS3 to VS1 ! modify ncoeff line for FEQ to accomodate critical region terms ! 02-20-97 MM, add default reference state ! 02-26-97 MM, add version number (future use) ! 03-11-97 MM, modify ECS-transport to new format ! 03-25-97 MM, set Psi,Chi coeff in ECS-transport to 1,0 pending refit of data ! 06-01-97 EWL, add parameters for ECS viscosity correlation ! 10-24-97 MM, read in f_int term in Eucken correlation in ECS method for t.c. ! change reference fluid EOS for ECS-transport from BWR to FEQ ! 11-10-97 MM, add t.c. shape factor fit to data #EOS !equation of state specification FEQ fundamental (Helmholtz) equation of state; Kamei et al. (1995). ?LITERATURE REFERENCE \ ?Kamei, A., Beyerlein, S.W. and Jacobsen, R.T Application of nonlinear ? regression in the development of a wide range formulation for HCFC-22. ? Int. J. Thermophysics 16:1155-1164 (1995). \ ?\ ? !end info 115.73 !lower temperature limit [K] 550.00 !upper temperature limit [K] 60000.0 !upper pressure limit [kPa] 19.91 !maximum density [mol/L] CPP !pointer to Cp0 model 86.468 !molecular weight [g/mol] 115.73 !triple point temperature [K] 0.3793d-3 !pressure at triple point [kPa] 19.907d0 !density at triple point [mol/L] 232.340 !normal boiling point temp [K] 0.22082 !acentric factor 369.295d0 4990.d0 6.05822d0 !Tc [K], pc [kPa], rho [mol/L] 369.295d0 6.05822d0 !reducing parameters [K, mol/L] 8.314510d0 !gas constant [J/mol-K] 35 4 0 0 0 0 !# terms, # coeff/term for: "normal" terms, critical, spare 0.695645445236d-01 -1.000 1.00 0 !a(i),t(i),d(i),l(i) 0.252275419999d+02 1.750 1.00 0 -0.202351148311d+03 2.250 1.00 0 0.350063090302d+03 2.500 1.00 0 -0.223134648863d+03 2.750 1.00 0 0.488345904592d+02 3.000 1.00 0 0.108874958556d-01 5.500 1.00 0 0.590315073614d+00 1.500 2.00 0 -0.689043767432d+00 1.750 2.00 0 0.284224445844d+00 3.500 2.00 0 0.125436457897d+00 1.000 3.00 0 -0.113338666416d-01 4.500 3.00 0 -0.631388959170d-01 1.500 4.00 0 0.974021015232d-02 0.500 5.00 0 -0.408406844722d-03 4.500 6.00 0 0.741948773570d-03 1.000 7.00 0 0.315912525922d-03 4.000 7.00 0 0.876009723338d-05 5.000 7.00 0 -0.110343340301d-03 -0.500 8.00 0 -0.705323356879d-04 3.500 8.00 0 0.235850731510d+00 5.000 2.00 2 -0.192640494729d+00 7.000 2.00 2 0.375218008557d-02 12.000 2.00 2 -0.448926036678d-04 15.000 2.00 2 0.198120520635d-01 3.500 3.00 3 -0.356958425255d-01 3.500 4.00 2 0.319594161562d-01 8.000 4.00 2 0.260284291078d-05 15.000 4.00 2 -0.897629021967d-02 25.000 4.00 4 0.345482791645d-01 3.000 6.00 2 -0.411831711251d-02 9.000 6.00 2 0.567428536529d-02 19.000 6.00 4 -0.563368989908d-02 2.000 8.00 2 0.191384919423d-02 7.000 8.00 2 -0.178930036389d-02 13.000 8.00 4 @EOS !equation of state specification ECS extended corresponding states model w/ temperature-dependent shape factors. ?LITERATURE REFERENCE \ ?Huber, M.L. and Ely, J.F. A predictive extended corresponding states model for ? pure and mixed refrigerants including an equation of state for R134a. ? Int. J. Refrigeration 17:18-31 (1994).\ ?\ ?shape factors based on vapor pressure and saturated liquid density data\ ?\ ?the ideal-gas contribution is computed with a polynomial Cp0 fit based on:\ ? Chen, S.S., Wilhoit, R.C., and Zwolinski, B.J. Ideal gas thermodynamic ? properties of six chlorofluoromethanes. J. Phys. Chem. Ref. Data 5:571-580 ? (1976). \ ? !end info 115.73 !lower temperature limit [K] 550.00 !upper temperature limit [K] 60000.0 !upper pressure limit [kPa] 19.91 !maximum density [mol/L] CPP !pointer to Cp0 model R134a.fld BWR !pointer to reference fluid model 0.32668 !acentric factor for R134a used in shape factor correlation 0.259147 !critical compressibility for R134a used in correlation 0.23033 !acentric factor for fluid used in shape factor correlation 369.20 !critical temperature [K] 5091.6 !critical pressure [kPa] 6.060606 !critical density [mol/L] (0.165 L/mol used in Huber & Ely) 2 !number of coefficients for 'f' shape factor 0.60250d-1 0.0d0 !alpha1 of Huber & Ely -0.67242d0 1.0d0 !alpha2 of Huber & Ely (log(Tr) term) 0 !number of density coefficients for 'f' shape factor 2 !number of coefficients for 'h' shape factor -0.52704d0 0.0d0 !beta1 of Huber & Ely 0.76856d-1 1.0d0 !beta2 of Huber & Ely (log(Tr) term) 0 !number of density coefficients for 'h' shape factor #AUX !auxiliary model specification CPP ideal gas heat capacity function of Kamei et al. (1995). ?LITERATURE REFERENCE \ ?Kamei, A., Beyerlein, S.W. and Jacobsen, R.T. Application of nonlinear ? regression in the development of a wide range formulation for HCFC-22. ? Int. J. Thermophysics 16:1155-1164 (1995). \ ?\ !end info 100.0 !lower temperature limit [K] 1000.0 !upper temperature limit [K] 0.00 !upper pressure limit [kPa] 0.00 !maximum density [mol/L] 1.00d0 8.31451d0 !reducing parameters for T, Cp0 2 9 !Nterms: polynonial, exponential 4.00526140446d0 0.00 != 4 + B10 (the Bi are coeff of Kamei) 1.20662553d-4 1.00 != B11 1.00d0 4352.3095d0 != B1 1.00d0 1935.1591d0 != B2 1.00d0 1887.67936d0 != B3 1.00d0 1694.88284d0 != B4 1.00d0 1605.67848d0 != B5 1.00d0 1162.53424d0 != B6 1.00d0 857.51288d0 != B7 1.00d0 605.72638d0 != B8 1.00d0 530.90982d0 != B9 #TRN !transport model specification ECS Extended Corresponding States model for transport props (R134a reference). ?LITERATURE REFERENCES \ ?Klein, S.A., McLinden, M.O. and Laesecke, A. (1997). An improved extended ? corresponding states method for estimation of viscosity of pure refrigerants ? and mixtures. Int. J. Refrigeration 20: 208-217. \ ?\ ?Huber, M.L., Friend, D.G. and Ely, J.F. Prediction of the thermal ? conductivity of refrigerants and refrigerant mixtures. ? Fluid Phase Equilibria 80: 249-261 (1992). \ ?\ ?DATA SOURCES FOR THERMAL CONDUCTIVITY\ ?The ECS parameters for thermal conductivity were based on the data of:\ ?\ ?Assael, M.J. and Karagiannidis, E. (1993). Measurements of the thermal ? conductivity of R22, R123, and R134a in the temperature range 250-340 K at ? pressures up to 30 MPa. Int. J. Thermophysics 14: 183_197.\ ?\ ?Donaldson, A.B. (1975). On the estimation of thermal conductivity of organic ? vapors. Ind. Eng. Chem. 14: 325-328.\ ?\ ?Makita, T., Tanaka, Y., Morimoto, Y., Noguchi, M. and Kubota, H. (1981). ? Thermal conductivity of gaseous fluorocarbon refrigerants R12, R13, R22, ? and R23 under pressure. Int. J. Thermophysics 2: 249_268.\ ?\ ?Shankland, I.R. (1990). Transport properties of CFC alternatives. paper ? presented at AIChE Spring National Meeting, Orlando, Florida\ ?\ ?Tsvetkov, O.B. and Laptev, Y.A. (1991). Thermal conductivity of ? difluoromonochloromethane in the critical region. ? Int. J. Thermophysics 12: 53-65.\ ?\ ?Yata, J., Minamiyama, T. and Tanaka, S. (1984). Measurement of thermal ? conductivity of liquid fluorocarbons. Int. J. Thermophysics 5: 209-218.\ ?\ ?Average absolute deviations of the fit from the experimental data were:\ ? Assael: 0.73%; Donaldson: 6.53%; Makita: 1.99%; Shankland: 3.42%; ? Tsvetkov: 6.18%; Yata: 1.23%; overall: 3.70%\ ?\ ?DATA SOURCES FOR VISCOSITY\ ?The ECS parameters for viscosity were based on the data of:\ ?\ ?Diller, D.E., Aragon, A.S. and Laesecke, A. (1993). ? Measurements of the viscosities of saturated and compressed liquid ? chlorodifluormethane (R22). ? Int. J. Refrig., 16(1): 19-22.\ ?\ ?Takahashi, M., Takahashi, S., Iwasaki, H. (1983). ? Viscosity of gaseous chlorodifluoromethane (R-22). ? Kagaku Kogaku Ronb., 9: 482-484.\ ?\ ?Average absolute deviations of the fit from the experimental data were:\ ? Diller: 1.46%; Takahashi: 0.91%; Overall: 1.09%\ ?\ ?Lennard-Jones parameters were based on the data of Takahasi et al.\ ? !end of info section 115.73 !lower temperature limit [K] 550.00 !upper temperature limit [K] 60000.0 !upper pressure limit [kPa] 19.91 !maximum density [mol/L] FEQ R134a.fld VS1 !model for reference fluid viscosity TC1 !model for reference fluid thermal conductivity 1 !Lennard-Jones flag (0 or 1) (0 => use estimates) 0.4666 !Lennard-Jones coefficient Sigma [nm] 284.7242 !L-J coefficient epsilon/kB [K] 2 0 0 !number of terms in f_int term in Eucken correlation, spare1, spare 2 7.7817d-4 0.0 0.0 0.0 !coeff, power of T, spare 1, spare 2 1.2636d-6 1.0 0.0 0.0 2 0 0 !number of terms in psi (visc shape factor): poly,spare1,spare2 1.0272423 0.0 0.0 0.0 !coeff, power of Tr, power of Dr, spare -0.0198493 0.0 1.0 0.0 2 0 0 !number of terms in chi (t.c. shape factor): poly,spare1,spare2 1.0750d+0 0.0 0.0 0.0 !coeff, power of Tr, power of Dr, spare -3.8574d-2 0.0 1.0 0.0 #STN !surface tension specification ST1 surface tension model ?LITERATURE REFERENCE \ ?Okada, M. and Watanabe, K. (1988). Surface tension correlations for several ? fluorocarbon refrigerants. Heat Transfer-Japanese Research 17: 35-52.\ ? !end info 115.73 !lower temperature limit [K] 369.295 !upper temperature limit [K] 0.00 !(dummy) upper pressure limit 0.00 !(dummy) maximum density 1 !number of terms 369.32d0 !critical temperature used by Okada & Watanabe (dummy) 0.06123d0 1.23d0 !sigma0 and n @END c 1 2 3 4 5 6 7 8 c2345678901234567890123456789012345678901234567890123456789012345678901234567890