R507A !Short name 507A-507A !CAS number 50% R125/50% R143a !Full name R507A !Chemical formula R507A !Synonym 98.8592 !Molar mass [g/mol] 200.0 !Triple point temperature [K] 226.41 !Normal boiling point [K] 343.765 !Critical temperature [K] 3704.9 !Critical pressure [kPa] 4.964 !Critical density [mol/L] 0.286 !Acentric factor -1. !Dipole moment [Debye] IIR !Default reference state 10.0 !Version number ???? !UN Number :UN: halocb !Family :Family: ???? !Heating value (upper) at 25 C [kJ/mol] (ISO 6976:2016) :Heat: ???? !IUPAC Int. Chemical Identifier :InChi: ???? !InChi Key :InChiKey: ???? !Alternative fluid for mixing rules :AltID: 507a507a !Hash number from InChI Key :Hash: ! compiled by E.W. Lemmon, NIST Physical and Chemical Properties Division, Boulder, Colorado ! 11-14-02 EWL, original version ________________________________________________________________________________ #EOS !---Equation of state--- FEQ !Helmholtz equation of state for R-507A of Lemmon (2003). :DOI: 10.1023/A:1025048800563 ? ?``````````````````````````````````````````````````````````````````````````````` ?Lemmon, E.W., ? "Pseudo Pure-Fluid Equations of State for the Refrigerant Blends R-410A, ? R-404A, R-507A, and R-407C," ? Int. J. Thermophys., 24(4):991-1006, 2003. ? ?The estimated uncertainty of density values calculated with the ? equation of state is 0.1%. The estimated uncertainty of calculated ? heat capacities and speed of sound values is 0.5%. Uncertainties of ? bubble and dew point pressures are 0.5%. ? !``````````````````````````````````````````````````````````````````````````````` 200.0 !Lower temperature limit [K] 500.0 !Upper temperature limit [K] 50000.0 !Upper pressure limit [kPa] 14.13 !Maximum density [mol/L] CPP !Pointer to Cp0 model 98.8592 !Molar mass [g/mol] 200.0 !Triple point temperature [K] 23.23 !Pressure at triple point [kPa] 14.13 !Density at triple point [mol/L] 226.41 !Normal boiling point temperature [K] 0.286 !Acentric factor 343.765 3704.9 4.964 !Tc [K], pc [kPa], rhoc [mol/L] 343.765 4.964 !Reducing parameters [K, mol/L] 8.314472 !Gas constant [J/mol-K] 21 4 0 0 0 0 0 0 0 0 0 0 !# terms and # coefs/term for normal terms, Gaussian terms, and Gao terms 6.24982 0.692 1. 0. !a(i),t(i),d(i),l(i) -8.07855 0.943 1. 0. 0.0264843 5.8 1. 0. 0.286215 0.77 2. 0. -0.00507076 5.84 2. 0. 0.0109552 0.24 4. 0. 0.00116124 0.69 6. 0. 1.38469 2.0 1. 1. -0.922473 3.0 1. 1. -0.0503562 7.0 1. 1. 0.822098 2.2 2. 1. -0.277727 4.3 2. 1. 0.358172 2.7 3. 1. -0.0126426 1.2 4. 1. -0.0060701 1.23 7. 1. -0.0815653 12.0 2. 2. -0.0233323 6.0 3. 2. 0.0352952 8.5 4. 2. 0.0159566 11.5 4. 2. 0.0755927 13.0 2. 3. -0.0542007 17.0 3. 3. 0.0170451 16.2 5. 3. #AUX !---Auxiliary function for Cp0 CPP !Ideal gas heat capacity function for R507A of Lemmon (2003). ? ?``````````````````````````````````````````````````````````````````````````````` ?Lemmon, E.W. ? !``````````````````````````````````````````````````````````````````````````````` 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 1.568 0.25 0.95006 364.0 4.1887 815.0 5.5184 1768.0 #AUX !---Auxiliary function for PH0 PH0 !Ideal gas Helmholtz form for R507A. ? ?``````````````````````````````````````````````````````````````````````````````` ?Lemmon, E.W. ? !``````````````````````````````````````````````````````````````````````````````` 0. ! 10000. ! 0. ! 0. ! 1 3 3 0 0 0 0 0 !Nterms: ai*log(tau**ti); ai*tau**ti; ai*log(1-exp(bi*tau)) -1.0 1.0 !ai, ti for [ai*log(tau**ti)] terms 9.93541 0.0 !aj, ti for [ai*tau**ti] terms 7.9985 1.0 -21.6054 -0.25 0.95006 -1.05886 !aj, ti for [ai*log(1-exp(ti*tau)] terms 4.1887 -2.37081 5.5184 -5.14305 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #STN !---Surface tension--- ST1 !Surface tension model for R507A of Lemmon (2003). ? ?``````````````````````````````````````````````````````````````````````````````` ?Lemmon, E.W., preliminary equation, 2003. ? !``````````````````````````````````````````````````````````````````````````````` 0. ! 10000. ! 0. ! 0. ! 2 !Number of terms in surface tension model 343.765 !Critical temperature used in fit (dummy) 0.06701 1.3066 !Sigma0 and n -0.04297 2.3145 #PS !---Vapor pressure--- PS5 !Vapor pressure equation for R507A of Lemmon (2003) ? ?``````````````````````````````````````````````````````````````````````````````` ?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. ! 343.765 3704.9 !Reducing parameters 4 0 0 0 0 0 !Number of terms in equation -7.5459 1.0 2.338 1.5 -2.237 2.1 -4.1535 4.7 #PL !---Liquid pressure--- PL5 !Liquid pressure equation for R507A of Lemmon (2003) ? ?``````````````````````````````````````````````````````````````````````````````` ?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. ! 343.765 3704.9 !Reducing parameters 4 0 0 0 0 0 !Number of terms in equation -7.4853 1.0 2.0115 1.5 -2.0141 2.2 -3.7763 4.6 @END c 1 2 3 4 5 6 7 8 c2345678901234567890123456789012345678901234567890123456789012345678901234567890