📄 r23.fld
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R23 !short name
75-46-7 !CAS number
trifluoromethane !full name
CHF3 !chemical formula
HCFC-23 !synonym
70.01385 !molecular weight [g/mol]
118.02 !triple point temperature [K]
191.132 !normal boiling point [K]
299.293 !critical temperature [K]
4832.0 !critical pressure [kPa]
7.52 !critical density [mol/L]
0.263 !acentric factor
1.649 !dipole moment [Debye]; value from REFPROP v5.0
IIR !default reference state
6.1 !version number
! compiled by E.W. 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
! 07-13-99 MM, add EOS of Penoncello et al.
! 08-23-99 EWL, add 12 term EOS of Span and Lemmon
! 08-23-99 EWL, change Tlow to 190 for Platzer equation
! 11-01-00 EWL, add transport equations of Shan
! 03-21-02 MLH, added LJ parameters from Shan to ECS model
! 06-27-02 EWL, add final equation of state
! 06-27-02 EWL, update 12 term EOS of Span and Lemmon
#EOS !equation of state specification
FEQ Helmholtz equation of state for R-23 of Penoncello et al. (2002).
?LITERATURE REFERENCE \
?Penoncello, S.G., Lemmon, E.W., Shan, Z., and Jacobsen, R.T,
? "An equation of state for the calculation of the thermodynamic properties
? of trifluoromethane (R-23),"
? submitted to J. Phys. Chem. Ref. Data, 2002.\
?\
?The uncertainties of the equation of state are 0.1% in density, 0.5% in
?heat capacities and speed of sound, and 0.2% in vapor pressures.
?Uncertainties in the critical region will be higher.
?\
!end of info section
118.02 !lower temperature limit [K]
475.0 !upper temperature limit [K]
120000.0 !upper pressure limit [kPa]
24.31 !maximum density [mol/L]
CPP !pointer to Cp0 model
70.01385 !molecular weight [g/mol]
118.02 !triple point temperature [K]
0.058 !pressure at triple point [kPa]
24.31 !density at triple point [mol/L]
191.132 !normal boiling point temperature [K]
0.263 !acentric factor
299.293 4832.0 7.52 !Tc [K], pc [kPa], rhoc [mol/L]
299.293 7.52 !reducing parameters [K, mol/L]
8.314472 !gas constant [J/mol-K]
17 4 0 12 0 0 !# terms, # coeff/term for: "normal" terms, critical, spare
0.7041529E+01 0.744 1. 0. !a(i),t(i),d(i),l(i)
-0.8259512E+01 0.94 1. 0.
0.8053040E-02 4.3 1. 0.
-0.8617615E-01 1.46 2. 0.
0.6333410E-02 0.68 5. 0.
-0.1863285E+00 4.8 1. 1.
0.3280510E+00 1.5 2. 1.
0.5191023E+00 2.07 3. 1.
0.6916144E-01 0.09 5. 1.
-0.5045875E-02 9.6 1. 2.
-0.1744221E-01 0.19 2. 2.
-0.5003972E-01 11.2 2. 2.
0.4729813E-01 0.27 4. 2.
-0.6164031E-01 1.6 4. 2.
0.1583585E-01 10.3 4. 2.
-0.1795790E-02 14.0 2. 3.
-0.1099007E-02 15.0 2. 4.
#AUX !auxiliary model specification
CPP ideal gas heat capacity function of Penoncello et al. (2002).
?LITERATURE REFERENCE \
?Penoncello, S.G., Lemmon, E.W., Shan, Z., and Jacobsen, R.T,
? "An equation of state for the calculation of the thermodynamic properties
? of trifluoromethane (R-23),"
? submitted to J. Phys. Chem. Ref. Data, 2002.
?\
!end of info section
118.02 !lower temperature limit [K]
475.0 !upper temperature limit [K]
0.0 !upper pressure limit [kPa]
0.0 !maximum density [mol/L]
1.0 8.314472 !reducing parameters for T, Cp0
1 4 0 0 0 0 0 !Nterms: polynomial, exponential, cosh, sinh
3.999 0.0
2.371 744.0
3.237 1459.0
2.610 2135.0
0.8274 4911.0
#AUX !auxiliary model specification
PH0 Helmholtz form for the ideal-gas state
?LITERATURE REFERENCE \
?Penoncello, S.G., Lemmon, E.W., Shan, Z., and Jacobsen, R.T,
? "An equation of state for the calculation of the thermodynamic properties
? of trifluoromethane (R-23),"
? submitted to J. Phys. Chem. Ref. Data, 2002.
?\
!end of info section
118.02 !lower temperature limit [K]
475.0 !upper temperature limit [K]
0.0 !upper pressure limit [kPa]
0.0 !maximum density [mol/L]
1 2 4 !Nterms: ai*log(tau**ti); ai*tau**ti; ai*log(1-exp(bi*tau))
2.9990000000 1.0000000000 !ai, ti for [ai*log(tau**ti)] terms
-8.3138606426 0.0000000000 !aj, ti for [ai*tau**ti] terms
6.5508725300 1.0000000000
2.3710000000 -2.4858583395 !aj, ti for [ai*log(1-exp(ti*tau)] terms
3.2370000000 -4.8748216631
2.6100000000 -7.1334778962
0.8274000000 -16.4086697651
@EOS !equation of state specification
FES short Helmholtz equation of state for R-23 of Lemmon and Span (2001).
?LITERATURE REFERENCE \
?Lemmon, E.W. and Span, R.,
? preliminary equation, 2001.
?\
!end of info section
118.02 !lower temperature limit [K]
475.0 !upper temperature limit [K]
120000.0 !upper pressure limit [kPa]
24.31 !maximum density [mol/L]
CPP !pointer to Cp0 model
70.014 !molecular weight [g/mol]
118.02 !triple point temperature [K]
0.058 !pressure at triple point [kPa]
24.31 !density at triple point [mol/L]
191.13 !normal boiling point temperature [K]
0.2624 !acentric factor
299.293 4832.0 7.52 !Tc [K], pc [kPa], rhoc [mol/L]
299.293 7.52 !reducing parameters [K, mol/L]
8.314472 !gas constant [J/mol-K]
12 4 0 12 0 0 !# terms, # coeff/term for: "normal" terms, critical, spare
0.9983201E+00 0.25 1.0 0 !a(i),t(i),d(i),l(i)
-0.2609840E+01 1.25 1.0 0
0.4048957E+00 1.5 1.0 0
0.6584364E-01 0.25 3.0 0
0.1716016E-03 0.875 7.0 0
0.1254979E+00 2.375 1.0 1
0.5303121E+00 2.0 2.0 1
-0.5223435E-03 2.125 5.0 1
-0.2467446E+00 3.5 1.0 2
-0.7368899E-01 6.5 1.0 2
-0.6996323E-01 4.75 4.0 2
-0.1455641E-01 12.5 2.0 3
@EOS !equation of state specification
FE1 Helmholtz equation of state for R-23 of Penoncello et al. (2000).
?LITERATURE REFERENCE \
?Penoncello, S.G., Shan, Z., and Jacobsen, R.T,
? "A fundamental equation for the calculation of the thermodynamic properties
? of trifluoromethane (R23),"
? ASHRAE Trans. 106(Part 1), 2000.
?\
!end of info section
158.02 !lower temperature limit [K]
473.15 !upper temperature limit [K]
120000.0 !upper pressure limit [kPa]
23.0 !maximum density [mol/L]
CP1 !pointer to Cp0 model
70.014 !molecular weight [g/mol]
158.02 !triple point temperature [K]
0.05888 !pressure at triple point [kPa]
22.851535 !density at triple point [mol/L]
191.054 !normal boiling point temperature [K]
0.264 !acentric factor
299.28 4827.3 7.5114 !Tc [K], pc [kPa], rhoc [mol/L]
299.28 7.5114 !reducing parameters [K, mol/L]
8.31451 !gas constant [J/mol-K]
27 4 0 0 0 0 !# terms, # coeff/term for: "normal" terms, critical, spare
0.350093635099d+0 -0.14 1.00 0 !a(i),t(i),d(i),l(i)
-0.131185838025d+1 1.49 1.00 0
-0.254118065769d+0 2.41 1.00 0
0.104275296122d+0 0.05 2.00 0
-0.205326997924d+0 1.59 2.00 0
0.256040993750d+0 2.04 2.00 0
0.118078220087d-1 -0.27 3.00 0
0.532850915621d-3 2.76 4.00 0
0.956700157221d-3 -0.06 6.00 0
-0.118990410423d-5 3.25 8.00 0
-0.180609172794d+0 5.36 1.00 2
0.138077199166d+0 5.28 2.00 2
0.507828500811d-1 4.23 2.00 2
0.439772083175d-1 3.35 3.00 2
-0.723557234469d-1 6.93 3.00 2
0.256500006055d-2 8.48 6.00 2
0.263213487134d-1 6.01 6.00 2
0.139266509424d-1 3.34 7.00 2
-0.105325247813d-1 7.10 7.00 2
0.136475671500d-2 5.46 10.00 2
-0.592653649931d-2 16.06 2.00 4
-0.644925101471d-1 19.37 3.00 4
-0.227635186710d-1 10.81 4.00 4
0.122367812706d+0 22.79 4.00 4
0.318153208563d-1 34.95 5.00 4
0.146725272055d-1 9.94 5.00 4
-0.923639585566d-1 29.16 5.00 4
#AUX !auxiliary model specification
CP1 ideal gas heat capacity function of Penoncello et al. (2000).
?LITERATURE REFERENCE \
?Penoncello, S.G., Shan, Z., and Jacobsen, R.T,
? "A fundamental equation for the calculation of the thermodynamic properties
? of trifluoromethane (R23),"
? ASHRAE Trans. 106(Part 1), 2000.
?\
!end of info section
100.0 !lower temperature limit [K]
1000.0 !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
1 6 0 0 0 0 0 !Nterms: polynomial, exponential, cosh, sinh
3.999509244d+0 0.00 != N1
1.070326018d+0 4368.102594d+0 != N2, theta(2)
1.566866769d+0 1607.104940d+0
0.848051597d+0 1007.138279d+0
1.847243699d+0 1973.991027d+0
1.649657530d+0 1657.461854d+0
2.043965290d+0 729.455868d+0
@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.,
? "Ideal gas thermodynamic properties of six chlorofluoromethanes,"
? J. Phys. Chem. Ref. Data, 5:571-580, 1976.\
?\
!end of info section
118.02 !lower temperature limit [K]
500.0 !upper temperature limit [K]
60000.0 !upper pressure limit [kPa]
23.2618 !maximum density [mol/L]
CP2 !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]
4836.0 !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
CP2 ideal gas heat capacity function of Chen et al. (1976).
?LITERATURE REFERENCE \
?fit based on spectroscopic values of:\
? Chen, S.S., Wilhoit, R.C., and Zwolinski, B.J.,
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