r143a.fld

一个关于物性计算的软件

-0.70610813E-01    6.5     1.0     2
-0.75041709E-01    4.75    4.0     2
-0.16411241E-01   12.5     2.0     3


#AUX               !auxiliary model specification
CP1  ideal gas heat capacity function
?LITERATURE REFERENCE \
?Li, J., Tillner-Roth, R., Sato, H., and Watanabe, K.,
? "An Equation of State for 1,1,1-Trifluoroethane (R-143a),"
? Int. J. Thermophys., 20(6):1639-1651, 1999.
?\
!end of info section
161.34             !lower temperature limit [K]
650.0              !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
  4  0    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
 0.10002060E+00    0.00
-0.96337511E-03    1.50
 0.31822397E+03   -1.25
 0.46917620E-01    1.00


@EOS               !equation of state specification
BWR  MBWR equation of state for R-143a of Outcalt and McLinden (1996).
?LITERATURE REFERENCE \
?Outcalt, S.L. and McLinden, M.O.,
? "An equation of state for the thermodynamic properties of
? R143a (1,1,1-trifluoroethane),"
? Int. J. Thermophys., 18(6):1445-1463, 1997.
?\
?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]
CP2                                    !pointer to Cp0 model
84.041                                 !molecular weight [g/mol]
161.34                                 !triple point temperature [K]
1.069                                  !pressure at triple point [kPa]
15.8328                                !density at triple point [mol/L]
225.928                                !normal boiling point temperature [K]
0.26113                                !acentric factor
346.04       3775.6       5.151118     !Tc [K], pc [kPa], rhoc [mol/L]
346.04                    5.151118     !reducing parameters [K, mol/L]
5.151118                               !gamma
0.08314471                             !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
CP2  ideal gas heat capacity function of Outcalt & McLinden (1996).
?LITERATURE REFERENCE \
?Outcalt, S.L. and McLinden, M.O.,
? "An equation of state for the thermodynamic properties of
? R143a (1,1,1-trifluoroethane),"
? Int. J. Thermophys., 18(6):1445-1463, 1997.
?\
?fit to (corrected) data of Gillis and Chen\
?
!end of info section
150.0              !lower temperature limit [K]
500.0              !upper temperature limit [K]
0.0                !upper pressure limit [kPa]
0.0                !maximum density [mol/L]
1.0          8.314471                  !reducing parameters for T, Cp0
  4  0    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
 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 (R134a reference); fitted to data.
?LITERATURE REFERENCES \
?Klein, S.A., McLinden, M.O., and Laesecke, A.,
? "An improved extended corresponding states method for estimation of
? viscosity of pure refrigerants and mixtures,"
? Int. J. Refrigeration, 20:208-217, 1997.
?\
?McLinden, M.O., Klein, S.A., and Perkins, R.A.,
? "An extended corresponding states model for the thermal conductivity
? of refrigerants and refrigerant mixtures,"
? Int. J. Refrigeration, 23:43-63, 2000.
?\
?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]
FEQ 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)
0.0                !Lennard-Jones coefficient sigma [nm] for ECS method
0.0                !Lennard-Jones coefficient epsilon/kappa [K] for ECS method
2  0  0                       !number of terms in f_int term in Eucken correlation, spare1, spare2
 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
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 of Schmidt et al. (1996).
?LITERATURE REFERENCE \
?Schmidt, J.W., Carrillo-Nava, E., and Moldover, M.R.,
? "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, 1996.
?
!end of info section
161.34             !lower temperature limit [K]
346.04             !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
3                           !number of terms in surface tension model
346.04                      !critical temperature used in fit (dummy)
 0.045672    1.26           !sigma0 and n
 0.080337    1.76           != sigma0 * sigma1
-0.138843    2.26           != sigma0 * sigma2


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