r22.fld

一个关于物性计算的软件

!end of info section
115.73             !lower temperature limit [K]
600.0              !upper temperature limit [K]
100000.0           !upper pressure limit [kPa]
20.0               !maximum density [mol/L]
CP1                                    !pointer to Cp0 model
86.469                                 !molecular weight [g/mol]
115.73                                 !triple point temperature [K]
0.00036704                             !pressure at triple point [kPa]
19.976                                 !density at triple point [mol/L]
232.36                                 !normal boiling point temperature [K]
0.221                                  !acentric factor
369.28       4988.5       6.0137159    !Tc [K], pc [kPa], rhoc [mol/L]
369.28                    6.0137159    !reducing parameters [K, mol/L]
8.31451                                !gas constant [J/mol-K]
      12  4      0  0       0  0       !# terms, # coeff/term for:  "normal" terms, critical, spare
 0.962689240000E+00  0.25    1.0     0 !a(i),t(i),d(i),l(i)
-0.252751030000E+01  1.25    1.0     0
 0.313087450000E+00  1.5     1.0     0
 0.724328370000E-01  0.25    3.0     0
 0.219302330000E-03  0.875   7.0     0
 0.332948640000E+00  2.375   1.0     1
 0.632012290000E+00  2.0     2.0     1
-0.327878410000E-02  2.125   5.0     1
-0.336808340000E+00  3.5     1.0     2
-0.227490220000E-01  6.5     1.0     2
-0.878673080000E-01  4.75    4.0     2
-0.211081450000E-01 12.5     2.0     3


#AUX               !auxiliary model specification
CP1  ideal gas heat capacity function
?LITERATURE REFERENCE \
?Wagner, W., Marx, V., and Pruss, A.,
? "A New Equation of State for Chlorodifluoromethane (R22) Covering the
? Entire Fluid Region from 116 K to 550 K at pressures up to 200 MPa,"
? Int. J. Refrig., 16(6):373-389, 1993.
?\
!end of info section
115.73             !lower temperature limit [K]
550.0              !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  4    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
 0.40067158E+01    0.00
 0.39321463E+01   1781.48550
 0.11007467E+01   4207.19375
 0.18712909E+01   1044.55334
 0.22270666E+01    574.52900


@EOS               !equation of state specification
ECS  Extended Corresponding States model w/ T-dependent shape factors.
?LITERATURE REFERENCE \
?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.\
?\
?shape factors based on vapor pressure and saturated liquid density data\
?\
?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
115.73             !lower temperature limit [K]
550.0              !upper temperature limit [K]
60000.0            !upper pressure limit [kPa]
19.91              !maximum density [mol/L]
CPP                !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
0.23033            !acentric factor for fluid used in shape factor correlation
369.20             !critical temperature [K]
5091.6             !critical pressure [kPa]
6.060606           !critical density [mol/L] (0.165 L/mol used in Huber & Ely)
2                         !number of temperature coefficients for 'f' shape factor
 0.60250d-1   0.0         !alpha1 of Huber & Ely
-0.67242d0    1.0         !alpha2 of Huber & Ely (log(Tr) term)
0                         !number of density coefficients for 'f' shape factor
2                         !number of temperature coefficients for 'h' shape factor
-0.52704d0    0.0         !beta1 of Huber & Ely
 0.76856d-1   1.0         !beta2 of Huber & Ely (log(Tr) term)
0                         !number of density coefficients for 'h' shape factor


#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:\
?\
?Assael, M.J. and Karagiannidis, E. (1993). Measurements of the thermal
? conductivity of R22, R123, and R134a in the temperature range 250-340 K at
? pressures up to 30 MPa. Int. J. Thermophysics, 14:183-197.\
?\
?Donaldson, A.B. (1975). On the estimation of thermal conductivity of organic
? vapors. Ind. Eng. Chem., 14:325-328.\
?\
?Makita, T., Tanaka, Y., Morimoto, Y., Noguchi, M., and Kubota, H. (1981).
? Thermal conductivity of gaseous fluorocarbon refrigerants R12, R13, R22,
? and R23 under pressure. Int. J. Thermophysics, 2:249-268.\
?\
?Shankland, I.R. (1990). Transport properties of CFC alternatives. paper
? presented at AIChE Spring National Meeting, Orlando, Florida\
?\
?Tsvetkov, O.B. and Laptev, Y.A. (1991). Thermal conductivity of
? difluoromonochloromethane in the critical region.
? Int. J. Thermophysics, 12:53-65.\
?\
?Yata, J., Minamiyama, T., and Tanaka, S. (1984). Measurement of thermal
? conductivity of liquid fluorocarbons. Int. J. Thermophysics, 5:209-218.\
?\
?Average absolute deviations of the fit from the experimental data were:\
?  Assael:  0.73%; Donaldson:  6.53%; Makita:  1.99%; Shankland:  3.42%;
?  Tsvetkov:  6.18%; Yata:  1.23%; overall:  3.70%\
?\
?DATA SOURCES FOR VISCOSITY\
?The ECS parameters for viscosity were based on the data of:\
?\
?Diller, D.E., Aragon, A.S., and Laesecke, A. (1993).
? Measurements of the viscosities of saturated and compressed liquid
? chlorodifluormethane (R22).
? Int. J. Refrig., 16(1):19-22.\
?\
?Takahashi, M., Takahashi, S., Iwasaki, H. (1983).
? Viscosity of gaseous chlorodifluoromethane (R-22).
? Kagaku Kogaku Ronb., 9:482-484.\
?\
?Average absolute deviations of the fit from the experimental data were:\
?   Diller:  1.46%; Takahashi:  0.91%; Overall:  1.09%\
?\
?Lennard-Jones parameters were based on the data of Takahasi et al.\
?
!end of info section
115.73             !lower temperature limit [K]
550.0              !upper temperature limit [K]
60000.0            !upper pressure limit [kPa]
19.91              !maximum density [mol/L]
FEQ R134a.fld
VS1                !model for reference fluid viscosity
TC1                !model for reference fluid thermal conductivity
1                  !Lennard-Jones flag (0 or 1) (0 => use estimates)
0.4666             !Lennard-Jones coefficient sigma [nm] for ECS method
284.7242           !Lennard-Jones coefficient epsilon/kappa [K] for ECS method
2  0  0                       !number of terms in f_int term in Eucken correlation, spare1, spare2
 7.7817d-4   0.0   0.0   0.0  !coeff, power of T, spare 1, spare 2
 1.2636d-6   1.0   0.0   0.0
2  0  0                       !number of terms in psi (visc shape factor): poly,spare1,spare2
 1.0272423   0.0   0.0   0.0  !coeff, power of Tr, power of Dr, spare
-0.0198493   0.0   1.0   0.0
2  0  0                       !number of terms in chi (t.c. shape factor): poly,spare1,spare2
 1.0750d+0   0.0   0.0   0.0  !coeff, power of Tr, power of Dr, spare
-3.8574d-2   0.0   1.0   0.0


#STN        !surface tension specification
ST1  surface tension model of Okada and Watanabe (1988).
?LITERATURE REFERENCE \
?Okada, M. and Watanabe, K.,
? "Surface tension correlations for several fluorocarbon refrigerants,"
? Heat Transfer-Japanese Research, 17:35-52, 1988.\
?
!end of info section
115.73             !lower temperature limit [K]
369.295            !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
1                           !number of terms in surface tension model
369.32                      !critical temperature used by Okada & Watanabe (dummy)
 0.06123     1.23           !sigma0 and n


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