R1234yf !Short name 754-12-1 !CAS number 2,3,3,3-Tetrafluoroprop-1-ene !Full name CF3CF=CH2 !Chemical formula {C3F4H2} R-1234yf !Synonym 114.0415928 !Molar mass [g/mol] 122.77 !Triple point temperature [K]; Minor B, Spatz M. HFO-1234yf low GWP refrigerant update. International refrigeration and air conditioning conference at Purdue, paper 2349, 14–17 July 2008, pp. 1–8. 243.665 !Normal boiling point [K] 367.85 !Critical temperature [K] 3382.2 !Critical pressure [kPa] 4.17 !Critical density [mol/L] 0.276 !Acentric factor 2.48 !Dipole moment [Debye]; Cousins and Laesecke, J. Research NIST, 117:231-256, 2012 IIR !Default reference state 10.0 !Version number 3161 !UN Number :UN: halocb !Family :Family: ???? !Heating value (upper) [kJ/mol] :Heat: ???? !GWP (IPCC 2007) :GWP: 16000. !RCL (ppm v/v, ASHRAE Standard 34, 2010) :RCL: A2L !Safety Group (ASHRAE Standard 34, 2010) :Safety: 1S/C3H2F4/c1-2(4)3(5,6)7/h1H2 !Standard InChI String :InChi: FXRLMCRCYDHQFW-UHFFFAOYSA-N !Standard InChI Key :InChiKey: 9905ef70 (R1234ze(E)) !Alternative fluid for mixing rules :AltID: 40377b40 !Hash number from InChI Key :Hash: !The fluid files contain general information about the fluid in the first 15 to 20 lines, followed by sections for the ! equations of state, transport equations, and auxiliary equations. Equations of state are listed first. The NIST recommended ! equations begin with a hash mark (#). The secondary equations begin with the @ symbol. These symbols can be swapped to ! select a secondary equation as primary and the primary as secondary. The equation of state section also contains auxiliary ! equations for the ideal gas heat capacity or ideal gas Helmholtz energy. Below the equations of state (both primary and ! secondary) are the transport equations, first viscosity and then thermal conductivity. These are then followed by the ! secondary equations if available. The transport section also contains auxiliary equations required to calculate either the ! dilute gas state or the critical enhancement. At the end of the file are additional but not necessary auxiliary equations, ! including simple equations for the vapor pressure, saturated liquid and vapor densities, melting line (for some fluids), and ! sublimation line (for even fewer fluids). This section also contains the equations for dielectric constant and surface ! tension if available. The sections are divided by different symbols (these being _-+=^*~) to aid the eye in locating a ! particular section. Secondary equations are indented 10 spaces to avoid confusion with the NIST recommended equations. The ! end of the fluid file is marked with @END. Anything below that is ignored. ! compiled by E.W. Lemmon, NIST Physical and Chemical Properties Division, Boulder, Colorado ! 03-23-09 EWL, Original version. ! 10-06-09 EWL, Add second preliminary fit with data of Di Nicola. ! 11-02-09 MLH, Add very preliminary transport equations. ! 01-05-10 EWL, Update fit with data of McLinden and Richter. ! 04-19-10 EWL, Add surface tension equation. ! 08-12-10 EWL, Update fit with speed of sound data of Lago. ! 09-01-10 EWL, Add ancillary equations. ! 09-01-10 MLH, Add new thermal conductivity correlation based on R. Perkin's new data. ! 12-02-11 EWL, Change reference state from NBP to IIR. ! 09-29-11 EWL, Add dipole moment. ! 05-17-12 MLH, Update thermal conductivity to match 2011 publication. ! 06-20-12 EWL, Add dipole moment. ! 12-06-12 EWL, Add surface tension coefficients of Mulero et al. (2012). ! 03-01-16 MLH, Add new viscosity fit. ! 07-26-17 EWL, Add real triple point temperature. ! 02-05-18 RA, Update ancillary equations. ________________________________________________________________________________ #EOS !---Equation of state--- FEQ !Helmholtz equation of state for R-1234yf of Richter et al. (2011). :TRUECRITICALPOINT: 367.85 4.17 !True EOS critical point [K, mol/L] (where dP/dD=0 and d^2P/dD^2=0 at constant T) :DOI: 10.1021/je200369m ? ?``````````````````````````````````````````````````````````````````````````````` ?Richter, M., McLinden, M.O., and Lemmon, E.W., ? "Thermodynamic Properties of 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf): ? Vapor Pressure and p-rho-T Measurements and an Equation of State," ? J. Chem. Eng. Data, 56(7):3254-3264, 2011. doi: 10.1021/je200369m ? ?The uncertainty in density in the liquid phase of the equation of state is ? 0.1% from 240 K to 320 K and pressures up to 10 MPa. The uncertainty ? increases outside of this region and in the vapor phase to 0.5%, and even ? higher in the critical region. In the gaseous region, the speed of sound can ? be calculated with an uncertainty of 0.1%. In the liquid phase, the ? uncertainty increases to 0.5%. The estimated uncertainty for heat capacities ? is 5%. The estimated uncertainty in vapor pressure is 0.1%. ? !``````````````````````````````````````````````````````````````````````````````` 122.77 !Lower temperature limit [K] 410.0 !Upper temperature limit [K] 30000.0 !Upper pressure limit [kPa] 13.685 !Maximum density [mol/L] CPP !Pointer to Cp0 model 114.0415928 !Molar mass [g/mol] 122.77 !Triple point temperature [K] 0.000738 !Pressure at triple point [kPa] 13.685 !Density at triple point [mol/L] 243.665 !Normal boiling point temperature [K] 0.276 !Acentric factor 367.85 3382.2 4.17 !Tc [K], pc [kPa], rhoc [mol/L] 367.85 4.17 !Reducing parameters [K, mol/L] 8.314472 !Gas constant [J/mol-K] 10 4 5 12 0 0 0 0 0 0 0 0 !# terms and # coefs/term for normal terms, Gaussian terms, and Gao terms 0.04592563 1.0 4. 0. !a(i),t(i),d(i),l(i) 1.546958 0.32 1. 0. -2.355237 0.929 1. 0. -0.4827835 0.94 2. 0. 0.1758022 0.38 3. 0. -1.210006 2.28 1. 2. -0.6177084 1.76 3. 2. 0.6805262 0.97 2. 1. -0.6968555 2.44 2. 2. -0.02695779 1.05 7. 1. 1.389966 1.4 1. 2. 2. -1.02 -1.42 1.13 0.712 0. 0. 0. -0.4777136 3.0 1. 2. 2. -1.336 -2.31 0.67 0.910 0. 0. 0. -0.1975184 3.5 3. 2. 2. -1.055 -0.89 0.46 0.677 0. 0. 0. -1.147646 1.0 3. 2. 2. -5.84 -80.0 1.28 0.718 0. 0. 0. 0.0003428541 3.5 2. 2. 2. -16.2 -108.0 1.2 1.64 0. 0. 0. eta beta gamma epsilon EXP[eta*(delta-epsilon)^2+beta*(tau-gamma)^2] #AUX !---Auxiliary function for Cp0 CPP !Ideal gas heat capacity function for R-1234yf of Richter et al. (2011). ? ?``````````````````````````````````````````````````````````````````````````````` ?Richter, M., McLinden, M.O., and Lemmon, E.W., 2011. ? !``````````````````````````````````````````````````````````````````````````````` 0. ! 10000. ! 0. ! 0. ! 1.0 8.314472 !Reducing parameters for T, Cp0 1 4 0 0 0 0 0 !Nterms: polynomial, exponential, cosh, sinh 5.944 0.0 7.549 718.0 1.537 877.0 2.03 4465.0 7.455 1755.0 #AUX !---Auxiliary function for PX0 PX0 !Helmholtz energy ideal-gas function for R-1234yf of Richter et al. (2011). ? ?``````````````````````````````````````````````````````````````````````````````` ?Richter, M., McLinden, M.O., and Lemmon, E.W., 2011. ? !``````````````````````````````````````````````````````````````````````````````` 1 2 4 0 0 0 0 0 !Nterms: ai*log(tau**ti); ai*tau**ti; ai*log(1-exp(bi*tau)) 4.944 1.0 !ai, ti for [ai*log(tau**ti)] terms -12.8379485300797782 0.0 !aj, ti for [ai*tau**ti] terms 8.0426156173728476 1.0 !aj, ti for [ai*tau**ti] terms 7.549 718.0 !aj, ti for [ai*log(1-exp(-ti/T)] terms 1.537 877.0 2.03 4465.0 7.455 1755.0 #AUX !---Auxiliary function for PH0 PH0 !Ideal gas Helmholtz form for R-1234yf of Richter et al. (2011) ? ?``````````````````````````````````````````````````````````````````````````````` ? !``````````````````````````````````````````````````````````````````````````````` 0. ! 10000. ! 0. ! 0. ! 1 2 4 0 0 0 0 0 !Nterms: ai*log(tau**ti); ai*tau**ti; ai*log(1-exp(bi*tau)); cosh; sinh 4.944 1.0 !ai, ti for [ai*log(tau**ti)] terms -12.8379284042 0.0 !aj, ti for [ai*tau**ti] terms 8.0426046749 1.0 7.549 -1.9518825608 !aj, ti for [ai*log(1-exp(ti*tau)] terms 1.537 -2.3841239636 2.03 -12.1380997689 7.455 -4.7709664265 -------------------------------------------------------------------------------- @EOS !---Equation of state--- FE1 !Helmholtz equation of state for R-1234yf of Akasaka (2011). ? ?``````````````````````````````````````````````````````````````````````````````` ?Akasaka, R., ? "New Fundamental Equations of State with a Common Functional Form for ? 2,3,3,3-Tetrafluoropropene (R-1234yf) and Trans-1,3,3,3-Tetrafluoropropene ? (R-1234ze(E))," ? Int. J. Thermophys.,32(6):1125-1147 (2011) doi: 10.1007/s10765-011-0992-0 ? !``````````````````````````````````````````````````````````````````````````````` 240. !Lower temperature limit [K] 400.0 !Upper temperature limit [K] 40000.0 !Upper pressure limit [kPa] 11.64 !Maximum density [mol/L] CP1 !Pointer to Cp0 model 114.042 !Molar mass [g/mol] 220. !Triple point temperature [K] 31.5 !Pressure at triple point [kPa] 11.63 !Density at triple point [mol/L] 243.7 !Normal boiling point temperature [K] 0.276 !Acentric factor 367.85 3382.0 4.191438242 !Tc [K], pc [kPa], rhoc [mol/L] 367.85 4.191438242 !Reducing parameters [K, mol/L] 8.314472 !Gas constant [J/mol-K] 17 4 0 0 0 0 0 0 0 0 0 0 !# terms and # coefs/term for normal terms, Gaussian terms, and Gao terms 8.3266757 0.66886 1. 0. !a(i),t(i),d(i),l(i) -9.2588001 0.83392 1. 0. -0.24906043 1.6982 1. 0. 0.14422208 1.8030 2. 0. 0.011679917 0.36657 5. 0. -0.16465103 3.8666 1. 1. 0.10580795 1.0194 3. 1. 0.017135586 0.0 5. 1. -0.016764798 1.1655 7. 1. -0.012781115 8.3101 1. 2. 0.36440802 6.1459 2. 2. -0.28535370 8.3495 2. 2. -0.096835199 6.0422 3. 2. 0.088063705 7.444 4. 2. 0.018736343 15.433 2. 3. -0.016872191 21.543 3. 3. 0.0070032274 15.499 5. 3. @AUX !---Auxiliary function for Cp0 CP1 !Ideal gas heat capacity function for R-1234yf. ? ?``````````````````````````````````````````````````````````````````````````````` ?Akasaka, R., ? !``````````````````````````````````````````````````````````````````````````````` 0. ! 10000. ! 0. ! 0. ! 1.0 8.314472 !Reducing parameters for T, Cp0 1 3 0 0 0 0 0 !Nterms: polynomial, exponential, cosh, sinh 4.0 0.0 5.2829 354.0 6.96022 965.0 7.04266 1981.0 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ #ETA !---Viscosity--- VS7 !Pure fluid viscosity model for R-1234yf of Huber and Assael (2016). :DOI: 10.1016/j.ijrefrig.2016.08.007 ? ?``````````````````````````````````````````````````````````````````````````````` ?Huber, M.L. and Assael, M.J., ? "Correlations for the Viscosity of 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) ? and trans-1,2,2,2-Tetrafluoropropene (R1234ze(E))," ? Int. J. Refrig., 71:39-45, 2016. ? doi: 10.1016/j.ijrefrig.2016.08.007 ? ?The estimated uncertainty for the dilute gas region is 3%, for the liquid phase at pressures to 30 MPa is 3.5%. ? !``````````````````````````````````````````````````````````````````````````````` 220.0 !Lower temperature limit [K] 410.0 !Upper temperature limit [K] 30000.0 !Upper pressure limit [kPa] 12.0 !Maximum density [mol/L] NUL !Omega model ! !Dilute gas function $DG SUM:4 SUM:3 / ! !Second viscosity virial function $VV RED SUM:9 ! !Residual function $RF RED SUMDTHRD:4 SUM:2 / ! !Coefficients $CF -836950.0 0. 0. 0. 0 !Dilute gas terms 6336.28 1. 0. 0. 0 !Coefficient, power in T -2.3547 2. 0. 0. 0 0.0395563 3. 0. 0. 0 39509.1 0. 0. 0. 0 121.018 1. 0. 0. 0 1.0 2. 0. 0. 0 !Virial terms 0.090164213 275. 1. 0. 0 !Reducing parameters for eta, T (= eps/k), rho, etaB2 (= 0.6022137*sigma**3) -19.572881 0. 0. 0. 0 !Coefficient, power in T* = T/(eps/k) 219.73999 -0.25 0. 0. 0 -1015.3226 -0.5 0. 0. 0 2471.01251 -0.75 0. 0. 0 -3375.1717 -1. 0. 0. 0 2491.6597 -1.25 0. 0. 0 -787.26086 -1.5 0. 0. 0 14.085455 -2.5 0. 0. 0 -0.34664158 -5.5 0. 0. 0 !Background gas function 1.0 367.85 4.17 0. 0 !Reducing parameters for eta, T, rho 0.68706100665 1.5 2. 0. 0 7.1608477411 1.5 5. 0. 0 -2.079577245 1.5 8. 0. 0 -43.47027288 0.5 5. 0. 0 -3.53682791 1.0 0. 0. 0 1.0 1.0 1. 0. 0 NUL !Pointer to the viscosity critical enhancement auxiliary function (none used) ================================================================================ #TCX !---Thermal conductivity--- TC1 !Pure fluid thermal conductivity model for R-1234yf of Perkins and Huber (2011). :DOI: 10.1021/je200811n ? ?``````````````````````````````````````````````````````````````````````````````` ?Perkins, R.A. and Huber, M.L., ? "Measurement and Correlation of the Thermal Conductivity of ? 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) and trans-1,3,3,3-Tetrafluoropeopene (R1234ze)," ? J. Chem. Eng. Data, 56(12):4868-4874, 2011. doi: 10.1021/je200811n ? ?The estimated uncertainty of the correlation is 1 % for the liquid phase, ? and 3 % for the vapor at pressures less than 1 MPa, larger in the critical region. ? !``````````````````````````````````````````````````````````````````````````````` 220. !Lower temperature limit [K] 410.0 !Upper temperature limit [K] 30000.0 !Upper pressure limit [kPa] 12. !Maximum density [mol/L] 4 0 !# terms for dilute gas function: numerator, denominator 367.85 1.0 !Reducing parameters for T, tcx -0.0102778 0. !Coefficient, power in T 0.0291098 1. 0.000860643 2. 0.0 3. 10 0 !# terms for background gas function: numerator, denominator 367.85 4.17 1. !Reducing parameters for T, rho, tcx -0.0368219 0. 1. 0. !Coefficient, powers of T, rho, spare for future use 0.0883226 0. 2. 0. -0.0705909 0. 3. 0. 0.0259026 0. 4. 0. -0.0032295 0. 5. 0. 0.0397166 1. 1. 0. -0.077239 1. 2. 0. 0.0664707 1. 3. 0. -0.0249071 1. 4. 0. 0.00336228 1. 5. 0. TK3 !Pointer to critical enhancement auxiliary function #AUX !---Auxiliary function for the thermal conductivity critical enhancement TK3 !Simplified thermal conductivity critical enhancement for R-1234yf of Perkins and Huber (2011). ? ?``````````````````````````````````````````````````````````````````````````````` ?Perkins, R.A. and Huber, M.L., ? "Measurement and Correlation of the Thermal Conductivity of ? 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf) and trans-1,3,3,3-Tetrafluoropeopene (R1234ze)," ? J. Chem. Eng. Data, 56(12):4868-4874, 2011. doi: 10.1021/je200811n ? !``````````````````````````````````````````````````````````````````````````````` 0. ! 10000. ! 0. ! 0. ! 9 0 0 0 !# terms: CO2-terms, spare, spare, spare 1.0 1.0 1.0 !Reducing parameters for T, rho, tcx [mW/(m-K)] 0.63 !Nu (universal exponent) 1.239 !Gamma (universal exponent) 1.03 !R0 (universal amplitude) 0.063 !Z (universal exponent--not used for t.c., only viscosity) 1.0 !C (constant in viscosity eqn = 1/[2 - (alpha + gamma)/(2*nu)], but often set to 1) 0.194e-9 !Xi0 (amplitude) [m] 0.0496 !Gam0 (amplitude) [-] 5.835e-10 !Qd_inverse (modified effective cutoff parameter) [m]; R125 value 551.775 !Tref (reference temperature)=1.5*Tc [K] ******************************************************************************** @TCX !---Thermal conductivity--- TC5 !Pure fluid thermal conductivity model for R-1234yf of Chung et al. (1988). ? ?``````````````````````````````````````````````````````````````````````````````` ?Chung, T-H., Ajlan, M., Lee, L.L. and Starling, K.E. ? "Generalized Multiparameter Correlation for Nonpolar and Polar Fluid Transport Properties" ? Ind. Eng. Chem. Res. 1988, 27, 671-679. ? !``````````````````````````````````````````````````````````````````````````````` 220. !Lower temperature limit [K] 420. !Upper temperature limit [K] 20000. !Upper pressure limit [kPa] 11.64 !Maximum density [mol/L] 0.50 !Lennard-Jones coefficient sigma [nm] =0.809vc*(1/3)A 292.1 !Lennard-Jones coefficient epsilon/kappa [K] =Tc/1.2593 0.276 0. 0. !w, mur, kappa for Chung 0 !Additional parameters for Chung TK3 !Pointer to critical enhancement auxiliary function @ETA !---Viscosity--- VS5 !Pure fluid viscosity model for R-1234yf of Chung et al. (1988). ? ?``````````````````````````````````````````````````````````````````````````````` ?Uses functional form in ? Chung, T-H., Ajlan, M., Lee, L.L. and Starling, K.E. ? "Generalized Multiparameter Correlation for Nonpolar and Polar Fluid Transport Properties" ? Ind. Eng. Chem. Res. 1998, 27, 671-679. ? !``````````````````````````````````````````````````````````````````````````````` 168.62 !Lower temperature limit [K] 420.0 !Upper temperature limit [K] 20000.0 !Upper pressure limit [kPa] 13.20 !Maximum density [mol/L] 1 !Number of terms associated with dilute-gas function NUL !Pointer to reduced effective collision cross-section model; not used 0.5025 !Lennard-Jones coefficient sigma [nm] =0.809vc*(1/3)A 292.107 !Lennard-Jones coefficient epsilon/kappa [K] =Tc/1.2593 1.0 1.0 !Reducing parameters for T, eta 0.22807 0.5 !=0.021357*SQRT(MW) [Chapman-Enskog term] 0 !Number of terms for initial density dependence 0.276 1.1361 0.0 0. 0 !w, mur, kappa for Chung, fit 0 !Additional parameters for Chung NUL !Pointer to the viscosity critical enhancement auxiliary function (none used) ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ @TRN !---ECS Transport--- ECS !Extended Corresponding States model (R134a reference) for R-1234yf. ? ?``````````````````````````````````````````````````````````````````````````````` ?*** ESTIMATION METHOD *** NOT STANDARD REFERENCE QUALITY *** ?Unpublished; uses method described in the following reference: ?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," ? Ind. Eng. Chem. Res., 42(13):3163-3178, 2003. doi: 10.1021/ie0300880 ? ?*** Limited or no experimental data were available for analysis *** ? ?Estimated uncertainty for viscosity is 10% based on comparisons with ? Hulse, R., Singh, R., Pham, H., "Physical Properties of HFO-1234yf", paper presented at 17th Symp. Thermophysical Properties, Boulder CO June 2009 ? ?No data for thermal conductivity was found. Based on family comparisons, ? the estimated uncertainty for ECS estimation model is 20% ? ?The Lennard-Jones parameters were taken from Arakawa ? !``````````````````````````````````````````````````````````````````````````````` 220.0 !Lower temperature limit [K] 410.0 !Upper temperature limit [K] 30000.0 !Upper pressure limit [kPa] 11.64 !Maximum density [mol/L] FEQ R134A.FLD VS1 !Model for reference fluid viscosity TC1 !Model for reference fluid thermal conductivity NUL !Large molecule identifier 1 !Lennard-Jones flag (0 or 1) (0 => use estimates) 0.5328 !Lennard-Jones coefficient sigma [nm] 281.14 !Lennard-Jones coefficient epsilon/kappa [K] 1 0 0 !Number of terms in f_int term in Eucken correlation, spare1, spare2 0.00132 0. 0. 0. !Coefficient, power of T, spare1, spare2 3 0 0 !Number of terms in psi (visc shape factor): poly,spare1,spare2 1.1998 0. 0. 0. !Coefficient, power of Tr, power of Dr, spare -0.18137 0. 1. 0. !Coefficient, power of Tr, power of Dr, spare 0.03851 0. 2. 0. !Coefficient, power of Tr, power of Dr, spare 1 0 0 !Number of terms in chi (t.c. shape factor): poly,spare1,spare2 1.0 0. 0. 0. !Coefficient, power of Tr, power of Dr, spare TK3 !Pointer to critical enhancement auxiliary function ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #STN !---Surface tension--- ST1 !Surface tension model for R-1234yf of Mulero et al. (2012). :DOI: 10.1063/1.4768782 ? ?``````````````````````````````````````````````````````````````````````````````` ?Mulero, A., Cachadiña, I., and Parra, M.I., ? "Recommended Correlations for the Surface Tension of Common Fluids," ? J. Phys. Chem. Ref. Data, 41(4), 043105, 2012. doi: 10.1063/1.4768782 ? !``````````````````````````````````````````````````````````````````````````````` 0. ! 10000. ! 0. ! 0. ! 1 !Number of terms in surface tension model 367.85 !Critical temperature used in fit (dummy) 0.06274 1.394 !Sigma0 and n #PS !---Vapor pressure--- PS5 !Vapor pressure equation for R-1234yf of Akasaka (2018). ? ?``````````````````````````````````````````````````````````````````````````````` ?Akasaka, R., 2018. ? ?Functional Form: P=Pc*EXP[SUM(Ni*Theta^ti)*Tc/T] where Theta=1-T/Tc, Tc and Pc ? are the reducing parameters below, which are followed by rows containing Ni and ti. ? !``````````````````````````````````````````````````````````````````````````````` 0. ! 10000. ! 0. ! 0. ! 367.85 3382.2 !Reducing parameters 4 0 0 0 0 0 !Number of terms in equation -7.4271 1.0 2.1072 1.5 -1.6539 2.0 -2.8394 3.9 #DL !---Saturated liquid density--- DL1 !Saturated liquid density equation for R-1234yf of Akasaka (2018). ? ?``````````````````````````````````````````````````````````````````````````````` ?Akasaka, R., 2018. ? ?Functional Form: D=Dc*[1+SUM(Ni*Theta^ti)] where Theta=1-T/Tc, Tc and Dc are ? the reducing parameters below, which are followed by rows containing Ni and ti. ? !``````````````````````````````````````````````````````````````````````````````` 0. ! 10000. ! 0. ! 0. ! 367.85 4.17 !Reducing parameters 5 0 0 0 0 0 !Number of terms in equation 0.14328 0.11 2.1007 0.41 0.48993 0.71 -0.26122 1.0 0.39037 2.0 #DV !---Saturated vapor density--- DV3 !Saturated vapor density equation for R-1234yf of Akasaka (2018). ? ?``````````````````````````````````````````````````````````````````````````````` ?Akasaka, R., 2018. ? ?Functional Form: D=Dc*EXP[SUM(Ni*Theta^ti)] where Theta=1-T/Tc, Tc and Dc are ? the reducing parameters below, which are followed by rows containing Ni and ti. ? !``````````````````````````````````````````````````````````````````````````````` 0. ! 10000. ! 0. ! 0. ! 367.85 4.17 !Reducing parameters 5 0 0 0 0 0 !Number of terms in equation -2.3105 0.352 -5.5677 1.0 -13.329 2.58 -38.743 5.4 -80.865 11.2 @END c 1 2 3 4 5 6 7 8 c2345678901234567890123456789012345678901234567890123456789012345678901234567890