r12.fld

一个关于物性计算的软件

R12                                   !short name
75-71-8                               !CAS number
dichlorodifluoromethane               !full name
CCl2F2                                !chemical formula
CFC-12                                !synonym
120.913            !molecular weight [g/mol]
116.099            !triple point temperature [K]
243.398            !normal boiling point [K]
385.12             !critical temperature [K]
4136.1             !critical pressure [kPa]
4.672781           !critical density [mol/L] (565 kg/m**3)
0.17948            !acentric factor
0.510              !dipole moment [Debye]; value from REFPROP v5.0
IIR                !default reference state
6.1                !version number

! compiled by M. McLinden, NIST Physical and Chemical Properties Division, Boulder, Colorado
! 02-29-96  MM, original version
! 03-17-96  MM, add transport correlations compiled by S.A. Klein
! 06-17-96  MM, add thermal conductivity coefficients fitted by S.A. Klein
! 08-19-96  MM, add surface tension fit
! 10-09-96  MM, add dipole moment value
!               add Cp0 function of Marx et al.
! 01-31-97  MM, change pointer for ECS reference viscosity from VS3 to VS1
!               modify ncoeff line for FEQ to accommodate critical region terms
! 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
! 03-25-97  MM, set Psi,Chi coeff in ECS-transport to 1,0 pending refit of data
! 06-01-97 EWL, add parameters for ECS viscosity correlation
! 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
! 11-04-97  MM, enter thermal conductivity shape factor fitted to data
! 11-01-99 EWL, add Span 12 term short equation of state
! 11-10-99 EWL, add extra digit to ptp

#EOS               !equation of state specification
FEQ  Helmholtz equation of state for R-12 of Marx et al. (1992).
?LITERATURE REFERENCE \
?Marx, V., Pruss, A., and Wagner, W.,
? "Neue Zustandsgleichungen fuer R 12, R 22, R 11 und R 113.  Beschreibung
? des thermodynamishchen Zustandsverhaltens bei Temperaturen bis 525 K und
? Druecken bis 200 MPa,"
? Duesseldorf: VDI Verlag, Series 19 (Waermetechnik/Kaeltetechnik), No. 57,
? 1992.
?
!end of info section
116.099            !lower temperature limit [K]
525.0              !upper temperature limit [K]
200000.0           !upper pressure limit [kPa]
15.13              !maximum density [mol/L]
CPP                                    !pointer to Cp0 model
120.913                                !molecular weight [g/mol]
116.099                                !triple point temperature [K]
0.000243                               !pressure at triple point [kPa]
15.1253                                !density at triple point [mol/L]
243.398                                !normal boiling point temperature [K]
0.17948                                !acentric factor
385.12       4136.1       4.672781     !Tc [K], pc [kPa], rhoc [mol/L]
385.12                    4.672781     !reducing parameters [K, mol/L]
8.314471                               !gas constant [J/mol-K]
      22  4      0  0       0  0       !# terms, # coeff/term for:  "normal" terms, critical, spare
  0.2075343402d+1   0.500   1.00   0   !a(i),t(i),d(i),l(i)
 -0.2962525996d+1   1.000   1.00   0
  0.1001589616d-1   2.000   1.00   0
  0.1781347612d-1   2.500   2.00   0
  0.2556929157d-1  -0.500   4.00   0
  0.2352142637d-2   0.000   6.00   0
 -0.8495553314d-4   0.000   8.00   0
 -0.1535945599d-1  -0.500   1.00   1
 -0.2108816776d+0   1.500   1.00   1
 -0.1654228806d-1   2.500   5.00   1
 -0.1181316130d-1  -0.500   7.00   1
 -0.4160295830d-4   0.000  12.00   1
  0.2784861664d-4   0.500  12.00   1
  0.1618686433d-5  -0.500  14.00   1
 -0.1064614686d+0   4.000   1.00   2
  0.9369665207d-3   4.000   9.00   2
  0.2590095447d-1   2.000   1.00   3
 -0.4347025025d-1   4.000   1.00   3
  0.1012308449d+0  12.000   3.00   3
 -0.1100003438d+0  14.000   3.00   3
 -0.3361012009d-2   0.000   5.00   3
  0.3789190008d-3  14.000   9.00   4


#AUX               !auxiliary model specification
CPP  ideal gas heat capacity function of Marx et al. (1992).
?LITERATURE REFERENCE \
?Marx, V., Pruss, A., and Wagner, W.,
? "Neue Zustandsgleichungen fuer R 12, R 22, R 11 und R 113.  Beschreibung
? des thermodynamishchen Zustandsverhaltens bei Temperaturen bis 525 K und
? Druecken bis 200 MPa,"
? Duesseldorf: VDI Verlag, Series 19 (Waermetechnik/Kaeltetechnik), No. 57,
? 1992.
?\
?Note:  Marx et al. give a Helmholtz form for the ideal gas term; it
? has been converted to a Cp0 form, by the transform:\
?\
?   Cp0/R = (1 + a_3) + SUM{a_i*U_i*exp(U_i)/[1 - exp(U_i)]**2}\
?   where U_i = omega_i*T_n/T, T_n = Tcrit, \
?   and the a_i and omega_i are the original coefficients given by Marx\
?
!end of info section
100.0              !lower temperature limit [K]
525.0              !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
4.00361975d0      0.00                 != 1 + a_3; power in T
3.16062357d0      1.4334342d3          != omega_4 * T_n  (T_n = 385.12 K)
0.371258136d0     2.4300498d3          != omega_5 * T_n
3.56226039d0      6.8565952d2          != omega_6 * T_n
2.12152336d0      4.1241579d2          != omega_7 * T_n


@EOS               !equation of state specification
FES  short Helmholtz equation of state for R-12 of Span (2000).
?LITERATURE REFERENCE \
?Span, R.,
? "Multiparameter Equations of State - An Accurate Source of Thermodynamic
? Property Data," Springer, Berlin, Heidelberg, New York, 2000.
?\
?The uncertainties of the equation of state are approximately 0.2% (to
?0.5% at high pressures) in density, 1% (in the vapor phase) to 2% in
?heat capacity, 1% (in the vapor phase) to 2% in the speed of sound, and
?0.2% in vapor pressure, except in the critical region.
?\
!end of info section
173.0              !lower temperature limit [K]
600.0              !upper temperature limit [K]
100000.0           !upper pressure limit [kPa]
13.9               !maximum density [mol/L]
CPP                                    !pointer to Cp0 model
120.914                                !molecular weight [g/mol]
173.0                                  !triple point temperature [K]
1.1633                                 !pressure at triple point [kPa]
13.892                                 !density at triple point [mol/L]
243.41                                 !normal boiling point temperature [K]
0.179                                  !acentric factor
385.12       4136.1       4.6727426    !Tc [K], pc [kPa], rhoc [mol/L]
385.12                    4.6727426    !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
 0.105572280000E+01  0.25    1.0     0 !a(i),t(i),d(i),l(i)
-0.333120010000E+01  1.25    1.0     0
 0.101972440000E+01  1.5     1.0     0
 0.841551150000E-01  0.25    3.0     0
 0.285207420000E-03  0.875   7.0     0
 0.396250570000E+00  2.375   1.0     1
 0.639957210000E+00  2.0     2.0     1
-0.214234110000E-01  2.125   5.0     1
-0.362491730000E+00  3.5     1.0     2
 0.193419900000E-02  6.5     1.0     2
-0.929938330000E-01  4.75    4.0     2
-0.248764610000E-01 12.5     2.0     3


#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:\
?\
?Donaldson, A.B. (1975). On the estimation of thermal conductivity of organic
? vapors. Ind. Eng. Chem., 14:325-328.\
?\
?Geller, V.Z., Artamonov, S.D., Zaporozhan, G.V., and Peredrii, V.G. (1974).
? Thermal conductivity of Freon-12. J. Eng. Phys., 27:842-846.\
?\
?Keyes, F.G. (1954). Thermal conductivity of gases. Trans. ASME, 76:809-816.\
?\
?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\
?\
?Sherratt, G.G. and Griffiths, E. (1939). A hot wire method for the thermal
? conductivity of gases. Phil. Mag., 27:68-75.\
?\
?Venart, J.E.S. and Mani, N. (1975). The thermal conductivity of R12. Trans.
? Canadian Soc. Mech. Engrs., 3:1-9.\
?\
?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:\
?  Donaldson:  2.18%; Geller:  1.86%; Keyes:  1.36%; Makita:  0.73%;
?  Shankland:  1.70%; Sherratt: 1.55%; Venart:  1.29%; Yata:  2.32%;
?  Overall:  1.36%\
?\
?DATA SOURCES FOR VISCOSITY\
?The ECS parameters for viscosity were based on the data of:\
?\
?Assael, M.J., Polimatidou, S.K., Vogel, E., and Wakeham, W.A. (1994).
? Measurements of the viscosity of R11, R12, R141b, and R152a in the
? temperature range 270-340 K at pressures up to 20 MPa.
? International Journal of Thermophysics, 15(4):575-589.\
?\
?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.\
?\
?Average absolute deviations of the fit from the experimental data were:\
?   Assael:  0.64%; Kumagai:  2.45%; Overall:  1.00%\
?\
?Lennard-Jones parameters are estimated.\
?\
!end of info section
116.099            !lower temperature limit [K]
525.0              !upper temperature limit [K]
200000.0           !upper pressure limit [kPa]
15.13              !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
1  0  0                       !number of terms in f_int term in Eucken correlation, spare1, spare2
 1.3440d-3   0.0   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
 1.0524907   0.0   0.0   0.0  !coeff, power of Tr, power of Dr, spare
-0.0252897   0.0   1.0   0.0
2  0  0                       !number of terms in chi (t.c. shape factor): poly,spare1,spare2
 9.9103d-1   0.0   0.0   0.0  !coeff, power of Tr, power of Dr, spare
 2.9509d-3   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
116.099            !lower temperature limit [K]
385.12             !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
1                           !number of terms in surface tension model
385.01                      !critical temperature used by Okada & Watanabe (dummy)
 0.05652     1.27           !sigma0 and n


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