R21 !Short name 75-43-4 !CAS number Dichlorofluoromethane !Full name CHCl2F !Chemical formula {CHCl2F} HCFC-21 !Synonym 102.9227 !Molar mass [g/mol] 142.8 !Triple point temperature [K] 282.01 !Normal boiling point [K] 451.48 !Critical temperature [K] 5181.2 !Critical pressure [kPa] 5.1107656 !Critical density [mol/L] 0.2061 !Acentric factor 1.37 !Dipole moment [Debye]; value from Refprop 5.10 IIR !Default reference state 10.0 !Version number 1029 !UN Number :UN: halocb !Family :Family: ???? !Heating value (upper) [kJ/mol] :Heat: 151. !GWP (WMO 2010) :GWP: 0.04 !ODP (Montreal Protocol 2012) :ODP: B1 !Safety Group (ASHRAE Standard 34, 2010) :Safety: 1S/CHCl2F/c2-1(3)4/h1H !Standard InChI String :InChi: UMNKXPULIDJLSU-UHFFFAOYSA-N !Standard InChI Key :InChiKey: ???? !Alternative fluid for mixing rules :AltID: 79ff2f80 !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 ! 07-02-97 EWL, Original version. ! 11-25-02 EWL, Change Tlow to 200 K. Equation goes bad at lower temps. ! 02-04-10 MLH, Add transport. ! 08-17-10 IDC, Add ancillary equations. ! 12-06-12 EWL, Add surface tension coefficients of Mulero et al. (2012). ________________________________________________________________________________ #EOS !---Equation of state--- FEQ !Helmholtz equation of state for R-21 of Platzer et al. (1990). :TRUECRITICALPOINT: 452.720 5.079559 !True EOS critical point [K, mol/L] (where dP/dD=0 and d^2P/dD^2=0 at constant T) :DOI: :WEB: https://www.springer.com/in/book/9783662026106 ? ?``````````````````````````````````````````````````````````````````````````````` ?Platzer, B., Polt, A., and Maurer, G., ? "Thermophysical Properties of Refrigerants," ? Berlin, Springer-Verlag, 1990. ? ?The estimated uncertainty on fixed points is Tc < 1%, Pc < 3%, rhoc < 5%. ? The estimated uncertainty for liquid density along the saturation boundary < 1%, ? and the estimated uncertainty for Psat < 3%. ? !``````````````````````````````````````````````````````````````````````````````` 200.0 !Lower temperature limit [K] 473.0 !Upper temperature limit [K] 138000.0 !Upper pressure limit [kPa] 15.36 !Maximum density [mol/L] CPP !Pointer to Cp0 model 102.92 !Molar mass [g/mol] 142.8 !Triple point temperature [K] 0.00006828 !Pressure at triple point [kPa] 16.519 !Density at triple point [mol/L] 282.01 !Normal boiling point temperature [K] 0.2061 !Acentric factor 451.48 5181.20 5.1107656 !Tc [K], pc [kPa], rhoc [mol/L] 451.48 5.1107656 !Reducing parameters [K, mol/L] 8.31451 !Gas constant [J/mol-K] 22 5 0 0 0 0 0 0 0 0 0 0 !# terms and # coefs/term for normal terms, Gaussian terms, and Gao terms -44.386484873 3. 0. 0. 0. !a(i),t(i),d(i),l(i) 9.26505600935 4. 0. 0. 0. -0.551709104376 5. 0. 0. 0. 0.504676623431 0. 1. 0. 0. -0.732431415692 1. 1. 0. 0. -0.868403860387 2. 1. 0. 0. 0.146234705555 3. 1. 0. 0. -0.280576335053 4. 1. 0. 0. 0.864743656093 0. 2. 0. 0. -2.70767233732 1. 2. 0. 0. 3.30476390706 2. 2. 0. 0. -0.210878239171 0. 3. 0. 0. 0.449531449589 1. 3. 0. 0. 0.120779813143 0. 4. 0. 0. -0.277297953777 1. 4. 0. 0. 0.0305441291172 1. 5. 0. 0. 44.386484873 3. 0. 2. 0.07470252 -9.26505600935 4. 0. 2. 0.07470252 0.551709104376 5. 0. 2. 0.07470252 1.21128809552 3. 2. 2. 0.07470252 0.167119476587 4. 2. 2. 0.07470252 -0.0504876793028 5. 2. 2. 0.07470252 #AUX !---Auxiliary function for Cp0 CPP !Ideal gas heat capacity function for R-21 of Platzer et al. (1990). ? ?``````````````````````````````````````````````````````````````````````````````` ?Platzer, B., Polt, A., and Maurer, G., 1990. ? !``````````````````````````````````````````````````````````````````````````````` 0. ! 10000. ! 0. ! 0. ! 1.0 102.92 !Reducing parameters for T, Cp0 5 0 0 0 0 0 0 !Nterms: polynomial, exponential, cosh, sinh 0.2376576 0.0 0.001271433 1.0 0.3241352e-6 2.0 -0.2492428e-8 3.0 0.1717208e-11 4.0 #AUX !---Auxiliary function for PX0 PX0 !Helmholtz energy ideal-gas function for R-21 of Platzer et al. (1990). ? ?``````````````````````````````````````````````````````````````````````````````` ?Platzer, B., Polt, A., and Maurer, G., 1990. ? !``````````````````````````````````````````````````````````````````````````````` 1 6 0 0 0 0 0 0 !Nterms: ai*log(tau**ti); ai*tau**ti; ai*log(1-exp(bi*tau)) 1.9418291482989671 1.0 !ai, ti for [ai*log(tau**ti)] terms -13.1877035704659669 0.0 !aj, ti for [ai*tau**ti] terms 9.1813742728328709 1.0 !aj, ti for [ai*tau**ti] terms 0.0157383507176257 -1.0 0.401228649683e-05 -2.0 -0.308523579319e-07 -3.0 0.212563475693e-10 -4.0 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ #TRN !---ECS Transport--- ECS !Extended Corresponding States model (R134A reference); fit to limited data for R-21. :DOI: 10.1021/ie0300880 ? ?``````````````````````````````````````````````````````````````````````````````` ?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 ? ?VISCOSITY ? Phillips, T.W., Murphy, K.P., "Liquid Viscosity of Halocarbons," J. Chem. Eng. Data, 15(2):304, 1970. doi: 10.1021/je60045a018 ? ?Estimated uncertainty for saturated liquid viscosity is 5%. ? ?THERMAL CONDUCTIVITY ? Tauscher, W., "Thermal Conductivity of Liquid Refrigerants Measured by an Unsteady State Hot-Wire Method," Kalte technik, 19(9):288, 1967. ? Djalalian, W.H., "Measurements of the Thermal Conductivity of Liquid Refrigerants at Low Temperatures," Bull. Int. Inst. Refrig. Annex 1964-2, 153-156; Commission 2. ? ?Estimated uncertainty for saturated liquid thermal conductivity is 5%. ? ?The Lennard-Jones parameters were estimated with the method of Chung. ? !``````````````````````````````````````````````````````````````````````````````` 200.0 !Lower temperature limit [K] 473.19 !Upper temperature limit [K] 137900.0 !Upper pressure limit [kPa] 15.36 !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) 0.4697 !Lennard-Jones coefficient sigma [nm] 358.60 !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 1.99918 0. 0. 0. !Coefficient, power of Tr, power of Dr, spare -0.688312 0. 1. 0. !Coefficient, power of Tr, power of Dr, spare 0.113652 0. 2. 0. !Coefficient, power of Tr, power of Dr, spare 2 0 0 !Number of terms in chi (t.c. shape factor): poly,spare1,spare2 1.03377 0. 0. 0. !Coefficient, power of Tr, power of Dr, spare -0.0223145 0. 1. 0. !Coefficient, power of Tr, power of Dr, spare TK3 !Pointer to critical enhancement auxiliary function #AUX !---Auxiliary function for the thermal conductivity critical enhancement TK3 !Simplified thermal conductivity critical enhancement for R-21 of Olchowy and Sengers (1989). ? ?``````````````````````````````````````````````````````````````````````````````` ?Olchowy, G.A. and Sengers, J.V., ? "A Simplified Representation for the Thermal Conductivity of Fluids in the Critical Region," ? Int. J. Thermophys., 10:417-426, 1989. doi: 10.1007/BF01133538 ? !``````````````````````````````````````````````````````````````````````````````` 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) [-] 0.5e-9 !Qd_inverse (modified effective cutoff parameter) [m]; arbitrary guess 677.22 !Tref (reference temperature)=1.5*Tc [K] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #STN !---Surface tension--- ST1 !Surface tension model for R-21 of Mulero et al. (2012). :DOI: 10.1063/1.4768782 ? ?``````````````````````````````````````````````````````````````````````````````` ?Mulero, A., Cachadiņa, 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 451.48 !Critical temperature used in fit (dummy) 0.06924 1.259 !Sigma0 and n #PS !---Vapor pressure--- PS5 !Vapor pressure equation for R-21 of Cullimore (2010). ? ?``````````````````````````````````````````````````````````````````````````````` ?Cullimore, I.D., 2010. ? ?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. ! 451.48 5181.20 !Reducing parameters 5 0 0 0 0 0 !Number of terms in equation -7.0336 1.0 1.5672 1.5 -3.3932 3.0 1.7582 7.0 -8.6765 10.0 #DL !---Saturated liquid density--- DL1 !Saturated liquid density equation for R-21 of Cullimore (2010). ? ?``````````````````````````````````````````````````````````````````````````````` ?Cullimore, I.D., 2010. ? ?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. ! 451.48 5.1107656 !Reducing parameters 4 0 0 0 0 0 !Number of terms in equation 0.33546 0.09 18.208 0.78 -26.4 0.92 10.586 1.1 #DV !---Saturated vapor density--- DV3 !Saturated vapor density equation for R-21 of Cullimore (2010). ? ?``````````````````````````````````````````````````````````````````````````````` ?Cullimore, I.D., 2010. ? ?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. ! 451.48 5.1107656 !Reducing parameters 5 0 0 0 0 0 !Number of terms in equation -0.38213 0.09 -5.5559 0.667 -15.886 2.5 -44.766 6.0 -276.06 15.0 @END c 1 2 3 4 5 6 7 8 c2345678901234567890123456789012345678901234567890123456789012345678901234567890