R143a              !short name (same as file name)
420-46-2           !CAS number
1,1,1-trifluoroethane
HFC-143a           !synonym1
R-143a             !synonym2
84.041             !molecular weight [g/mol]
161.34             !triple pt temperature [K]
225.928            !normal boiling pt [K]
346.04             !critical temperature [K]
3775.6             !critical pressure [kPa]
5.151118           !critical density [mol/L]
0.26113            !acentric factor
2.340              !dipole moment [Debye]; Meyer & Morrison, J Phys Chem (1991)
IIR                !default reference state
6.001              !version number

! compiled by M. McLinden, NIST Thermophysics Division, Boulder, Colorado
! 12-01-95  MM, original version
! 03-15-96  MM, add transport correlations compiled by S.A. Klein
! 03-18-96  MM, add dipole moment
! 06-17-96  MM, add thermal conductivity coefficients fitted by S.A. Klein
! 09-06-96  MM, add surface tension fit of Schmidt
! 10-09-96  MM, add revised MBWR EOS of Outcalt (including revision of critical parameters)
! 01-31-97  MM, change pointer for ECS reference viscosity from VS3 to VS1
! 02-07-97  MM, recast thermal cond model of Perkins into new TC1 form
! 02-20-97  MM, add default reference state
! 02-26-97  MM, put t.c. critical enhancement into TK1 form, add version number (future use)
! 03-11-97  MM, modify ECS-transport to new format
! 03-25-97  MM, set Psi,Chi coeff in ECS-transport to 1,0 pending refit of data
! 04-08-97  MM, reals --> integers for powers in exponential term of TK1
! 06-01-97 EWL, add parameters for ECS viscosity correlation
! 08-21-97  MM, purge exponentials from values read by GUI (e.g. model limits)
! 10-15-97  MM, revised Cp0 coeff to agree with final version of MBWR paper
! 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
! 11-07-97  MM, add t.c. shape factor fit to data; fix bug in revised Cp0 entered 10-15-97


#EOS               !equation of state specification
BWR  MBWR equation of state; Outcalt & McLinden (1996).
?LITERATURE REFERENCE \
?S.L. Outcalt and M.O. McLinden. (1997). An equation of state for the
? thermodynamic properties of R143a (1,1,1-trifluoroethane). National Institute
? of Standards and Technology, accepted for publication in Int J Thermophysics\
?\
?ABSTRACT \
?A modified Benedict-Webb-Rubin (MBWR) equation of state has been developed for
? R143a (1,1,1-trifluoroethane).  The correlation is based on a selection of
? available experimental thermodynamic property data.  Single-phase pressure-
? volume-temperature (PVT), heat capacity, and sound speed data, as well as
? second virial coefficient, vapor pressure, and saturated liquid and saturated
? vapor density data, were used with multi-property linear least-squares fitting
? to determine the 32 adjustable coefficients of the MBWR equation.  Ancillary
? equations representing the vapor pressure, saturated liquid and saturated
? vapor densities, and the ideal gas heat capacity were determined. \
?
!end of info section
161.34             !lower temperature limit [K]
500.0              !upper temperature limit [K]
60000.0            !upper pressure limit [kPa]
15.84              !maximum density [mol/L]
CPP                                    !pointer to Cp0 model
84.041d0                               !molecular weight [g/mol]
161.34d0                               !triple point temperature [K]
1.069d0                                !pressure at triple point [kPa]
15.8328                                !density at triple point [mol/L]
225.928d0                              !normal boiling point temp [K]
  0.26113d0                            !acentric factor
346.04d0   3775.6d0  5.151118d0        !Tc [K], pc [kPa], rhoc [mol/L]
346.04d0             5.151118d0        !reducing parameters [K, mol/L]
5.151118d0                             !gamma
0.08314471d0                           !gas constant [L-bar/mol-K]
      32       1                       !Nterm, Ncoeff per term
  -0.240561786316d-01    0.262345913719d+01   -0.650858041394d+02
   0.995952053681d+04   -0.147536464961d+07    0.135498153308d-02
  -0.281726617426d+01    0.134371062574d+04    0.850286316514d+06
  -0.180516636446d-03    0.618889066246d+00   -0.223083798271d+03
  -0.119095922349d-01   -0.173933336877d+01   -0.420847601180d+03
   0.213502079796d+00   -0.565708555185d-02    0.185442296800d+01
  -0.520377059921d-01   -0.846735696108d+06   -0.207964483848d+08
  -0.349977290513d+05    0.576427827667d+09   -0.389131863941d+03
   0.103074054089d+05   -0.447627052215d+01   -0.106673161101d+06
  -0.219511369081d-01    0.642186519493d+01   -0.938317030843d-04
  -0.478594713528d-01   -0.206555883874d+01


#AUX               !auxiliary model specification
CPP  polynomial fit for ideal gas heat capacity; Outcalt & McLinden (1996).
?LITERATURE REFERENCE \
?S.L. Outcalt and M.O. McLinden. (1997). An equation of state for the
? thermodynamic properties of R143a (1,1,1-trifluoroethane). National Institute
? of Standards and Technology, accepted for publication in Int J Thermophysics\
?\
?fit to (corrected) data of Gillis and Chen\
?
!end of info section
150.0              !lower temperature limit [K]
500.0              !upper temperature limit [K]
0.00               !upper pressure limit [kPa]
0.00               !maximum density [mol/L]
1.0    8.314471    !reducing parameters for T, Cp0
4   0                                 !Nterms:  polynonial, exponential
 1.838736d0      0.00                 !c(i), power of T
 3.01994d-2      1.00
-1.78455d-5      2.00
 4.42442d-9      3.00


#TRN               !transport model specification
ECS  Extended Corresponding States model for transport props (R134a ref. fluid).
?LITERATURE REFERENCES FOR THE ECS MODEL \
?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:\
?\
?Perkins, R.A. (1998). National Institute of Standards and Technology,
? NISTIR (in preparation)\
?\
?Tanaka, Y., Nakata, M. and Makita, T. (1991). Thermal conductivity of gaseous
? HFC-134a, HFC-143a, HCFC-141b, and HCFC-142b.
? Int. J. Thermophysics 12: 949_963.\
?\
?Yata, J., Hori, M., Kobayashi, K. and Minamiyama, T. (1996). Thermal
? conductivity of alternative fluorocarbons in the liquid phase.
? Int. J. Thermophysics  17(3): 561-571.\
?\
?Average absolute deviations of the fit from the experimental data were:\
?  Perkins (steady-state):  1.91%; Perkins (transient):  2.80%;
?  Tanaka:  14.01%; Yata:  4.00%; overall:  3.00%\
?\
?DATA SOURCES FOR VISCOSITY\
?The ECS parameters for viscosity were based on the data of:\
?\
?Kumagai, A. and Takahashi, S. (1991).
? Viscosity of saturated liquid fluorocarbon refrigerants from 273 to 353 K.
? International Journal of Thermophysics, 12(1): 105-117.\
?\
?Ripple, Dean and Defibaugh, Dana (1997).
? Viscosity of the saturated liquid phase of three fluorinated ethanes: R152a,
? R143a, and R125. Journal of Chemical and Engineering Data, 42: 360-364.\
?\
?Average absolute deviations of the fit from the experimental data were:\
?  Kumagai:  0.30%; Ripple:  0.28%; Overall:  0.29%\
?\
?\Lennard-Jones parameters are estimated.\
?\
!end of info section
161.34             !lower temperature limit [K]
500.0              !upper temperature limit [K]
60000.0            !upper pressure limit [kPa]
15.84              !maximum density [mol/L]
BWR 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
 1.0066d-3   0.0   0.0   0.0  !coeff, power of T, spare 1, spare 2
 1.3729d-6   1.0   0.0   0.0  !coeff, power of T, spare 1, spare 2
2  0  0            !number of terms in psi (visc shape factor):  poly,spare1,spare2
 0.9546821   0.0   0.0   0.0  !coeff, power of Tr, power of Dr, spare
 0.0072308   0.0   1.0   0.0
4  0  0            !number of terms in chi (t.c. shape factor):  poly,spare1,spare2
 1.1779d+0   0.0   0.0   0.0  !coeff, power of Tr, power of Dr, spare
-2.0541d-1   0.0   1.0   0.0
 6.4870d-2   0.0   2.0   0.0
-6.4730d-3   0.0   3.0   0.0


#STN        !surface tension specification
ST1  surface tension model
?LITERATURE REFERENCE \
?Schmidt, J.W., Carrillo-Nava, E. and Moldover, M.R. (1996). Partially
? halogenated hydrocarbons CHFCl-CF3, CF3-CH3, CF3-CHF-CHF2, CF3-CH2-CF3,
? CHF2-CF2-CH2F, CF3-CH2-CHF2, CF3-O-CHF2: Critical temperature, refractive
? indices, surface tension and estimates of liquid, vapor and critical densities.
? Fluid Phase Equilibria 122: 187-206.
?
!end info
161.34             !lower temperature limit [K]
346.04             !upper temperature limit [K]
0.00               !(dummy) upper pressure limit
0.00               !(dummy) maximum density
3                      !number of terms
346.04d0               !critical temperature used in correlation (dummy)
 0.045672d0  1.26d0    !sigma0 and n
 0.080337d0  1.76d0    != sigma0 * sigma1
-0.138843d0  2.26d0    != sigma0 * sigma2


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