R23 !short name (same as file name) 75-46-7 !CAS number trifluoromethane HCFC-23 !synonym1 R-23 !synonym2 70.0141 !molecular weight [g/mol] 117.97 !triple pt temperature [K] 191.054 !normal boiling pt [K] (computed from ECS model) 299.07 !critical temperature [K] 4836. !critical pressure [kPa] 7.499 !critical density [mol/L] 0.26338 !acentric factor (computed from ECS model) 1.649 !dipole moment [Debye]; value from REFPROP v5.0 IIR !default reference state 6.001 !version number ! compiled by Eric Lemmon, NIST Physical and Chemical Properties Division, Boulder, Colorado ! 09-12-96 EWL, original version ! 09-30-96 MM, add CAS no, Ttp, NBP, etc; change order of f,h coefficients ! 10-03-96 MM, add surface tension fit ! 10-08-96 MM, add default ECS coefficients for transport properties ! 01-31-97 MM, change pointer for ECS reference viscosity from VS3 to VS1 ! 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 ! 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 ! 11-13-97 MM, enter thermal conductivity shape factor fitted to data ! 11-13-97 EWL, add Platzer equation #EOS !equation of state specification ECS extended corresponding states model w/ T- and rho-dependent shape factors. ?LITERATURE REFERENCES \ ?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).\ ?\ ?extended by the addition of density-dependent shape factors based on ? fit by E.W. Lemmon, NIST, 09-12-96\ ?\ ?the ideal-gas contribution is computed with a polynomial Cp0 fit based on:\ ?Chen, S.S., Wilhoit, R.C., and Zwolinski, B.J. (1976). Ideal gas thermodynamic ? properties of six chlorofluoromethanes. J. Phys. Chem. Ref. Data 5:571-580.\ ?\ !end info 117.97 !lower temperature limit [K] 500.00 !upper temperature limit [K] 60000.0 !upper pressure limit [kPa] 23.2618 !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 0.2654 !acentric factor for fluid used in shape factor correlation 299.07 !critical temperature [K] 4836. !critical pressure [kPa] 7.499 !critical density [mol/L] 2 !number of temperature coefficients for 'f' shape factor -0.290258460d+00 0 !alpha1 of Huber & Ely -0.722284821d+00 1 !alpha2 of Huber & Ely (log(Tr) term) 1 !number of density coefficients for 'f' shape factor -0.531203321d-02 1 !rho coefficient and power in temperature 3 !number of temperature coefficients for 'h' shape factor 0.511752925d+01 0 !beta1 of Huber & Ely 0.397934192d+01 1 !beta2 of Huber & Ely (log(Tr) term) 0.281147473d+00 1 0 !number of density coefficients for 'h' shape factor #AUX !auxiliary model specification CPP polynomial fit for ideal gas heat capacity; based on Chen et al (1976). ?LITERATURE REFERENCE \ ?fit based on spectroscopic values of:\ ?Chen, S.S., Wilhoit, R.C., and Zwolinski, B.J. (1976). Ideal gas thermodynamic ? properties of six chlorofluoromethanes. J. Phys. Chem. Ref. Data 5:571-580.\ ?\ !end info 150.0 !lower temperature limit [K] 400.0 !upper temperature limit [K] 0.00 !upper pressure limit [kPa] 0.00 !maximum density [mol/L] 298.97 8.3145 !reducing parameters for T, Cp0 4 0 !Nterms: polynonial, exponential 3.375670 0.00 !c(i), power of T 0.936761 1.00 2.780423 2.00 -0.946568 3.00 @EOS !equation of state specification FEQ Bender equation of state (Platzer et al 1990) transformed to Helmholtz form. ?LITERATURE REFERENCE \ ?B. Platzer, A. Polt, and G. Maurer. Thermophysical properties of refrigerants. ? Berlin: Springer-Verlag (1990).\ ?\ !end of info section 200.0 !lower temperature limit [K] 475.0 !upper temperature limit [K] 60000.0 !upper pressure limit [kPa] 16.65 !maximum density [mol/L] CP1 !pointer to Cp0 model 70.014 !molecular weight [g/mol] 145.0 !triple point temperature [K] 2.5664104 !pressure at triple point [kPa] 22.851535 !density at triple point [mol/L] 191.054 !normal boiling point temperature [K] 0.264 !acentric factor 299.01 4816.2 7.42656 !Tc [K], pc [kPa], rhoc [mol/L] 299.01 7.42656 !reducing parameters [K, mol/L] 8.31451 !gas constant [J/mol-K] 22 5 0 0 0 0 !Nterm, Ncoeff per term -0.133234251368d+1 3.000 0.00 0 0.0 !a(i),t(i),d(i),l(i) 0.210373595421d+1 4.000 0.00 0 0.0 -0.376198728030d+0 5.000 0.00 0 0.0 0.881622087335d+0 0.000 1.00 0 0.0 -0.272053790906d+1 1.000 1.00 0 0.0 0.247468024356d+1 2.000 1.00 0 0.0 -0.234010064393d+1 3.000 1.00 0 0.0 0.303959507238d+0 4.000 1.00 0 0.0 0.317372750273d-1 0.000 2.00 0 0.0 0.329392142221d-1 1.000 2.00 0 0.0 0.205838531860d+0 2.000 2.00 0 0.0 0.133550139894d+0 0.000 3.00 0 0.0 -0.181698216766d+0 1.000 3.00 0 0.0 -0.245123269882d-1 0.000 4.00 0 0.0 0.247477874180d-1 1.000 4.00 0 0.0 0.589916583383d-2 1.000 5.00 0 0.0 0.133234251368d+1 3.000 0.00 2 0.70304082 -0.210373595421d+1 4.000 0.00 2 0.70304082 0.376198728030d+0 5.000 0.00 2 0.70304082 0.574267667948d+0 3.000 2.00 2 0.70304082 -0.762218931280d+0 4.000 2.00 2 0.70304082 0.472710395636d-1 5.000 2.00 2 0.70304082 #AUX !auxiliary model specification CP1 polynomial fit for ideal gas heat capacity ?LITERATURE REFERENCE \ ?B. Platzer, A. Polt, and G. Maurer. Thermophysical properties of refrigerants. ? Berlin: Springer-Verlag (1990).\ ?\ !end of info section 200.0 !lower temperature limit [K] 475.0 !upper temperature limit [K] 0.0 !upper pressure limit [kPa] 0.0 !maximum density [mol/L] 1.0 8.31451 !reducing parameters for T, Cp0 5 0 !Nterms: polynonial, exponential 0.40101431d+01 0.0 -0.55274742d-02 1.0 0.74008258d-04 2.0 -0.12590943d-06 3.0 0.69472178d-10 4.0 #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:\ ?\ ?Geller, V. and Peredrii, V.G. (1975). ? Thermal conductivity of Freon 13 and Freon 23 (in Russian). ? Izv. Vyssh. Uchebn Zaved Energetika 18: 113_116.\ ?\ ?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.\ ?\ ?Average absolute deviations of the fit from the experimental data were:\ ? Geller: 3.84%; Makita: 1.45%; Overall: 2.50%\ ?\ ?Lennard-Jones parameters are estimated.\ ?\ !end of info section 136. !lower temperature limit [K] (based on Ttp/Tc of ref fluid) 400.00 !upper temperature limit [K] 60000.0 !upper pressure limit [kPa] 20.00 !maximum density [mol/L] (limit of ECS-thermo fit) FEQ R134a.fld VS1 !model for reference fluid viscosity TC1 !model for reference fluid thermal conductivity 0 !Lennard-Jones flag (0 or 1) (0 => use estimates) 0.00000 !Lennard-Jones coefficient Sigma [nm] 000.00 !L-J coefficient epsilon/kB [K] 2 0 0 !number of terms in f_int term in Eucken correlation, spare1, spare 2 6.0570d-4 0.0 0.0 0.0 !coeff, power of T, spare 1, spare 2 1.8604d-6 1.0 0.0 0.0 0 0 0 !number of terms in psi (visc shape factor): poly,spare1,spare2 3 0 0 !number of terms in chi (t.c. shape factor): poly,spare1,spare2 1.3801d+0 0.0 0.0 0.0 !coeff, power of Tr, power of Dr, spare -2.7975d-1 0.0 1.0 0.0 4.8798d-2 0.0 2.0 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 117.97 !lower temperature limit [K] 299.07 !upper temperature limit [K] 0.00 !(dummy) upper pressure limit 0.00 !(dummy) maximum density 1 !number of terms 299.01d0 !critical temperature used by Okada & Watanabe (dummy) 0.06562d0 1.29d0 !sigma0 and n @END c 1 2 3 4 5 6 7 8 c2345678901234567890123456789012345678901234567890123456789012345678901234567890