r116.fld

一个关于物性计算的软件

R116               !short name
76-16-4            !CAS number
hexafluoroethane   !full name
CF3CF3             !chemical formula
FC-116             !synonym
138.01             !molecular weight [g/mol]
176.0              !triple point temperature [K]
194.91             !normal boiling point [K]
293.023            !critical temperature [K]
3053.7             !critical pressure [kPa]
4.518              !critical density [mol/L]
0.2547             !acentric factor
0.0                !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
! 12-02-96 EWL, original version
! 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
! 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
! 05-21-02 MLH, added coefficients for fit to transport data
! 07-11-02 EWL, add new equation of Lemmon and Span


#EOS               !equation of state specification
FEQ  Helmholtz equation of state for R-116 of Lemmon and Span (2002).
?LITERATURE REFERENCE \
?Lemmon, E.W. and Span, R.,
? preliminary equation, 2002.
?\
?The uncertainty in density is approximately 0.5% in the liquid, 1% in the
?vapor, and up to 2% or higher in the supercritical region (T>Tc).
?The uncertainty in vapor pressure is 1%, and the uncertainty in heat
?capacities is 3%.
?\
!end of info section
176.0              !lower temperature limit [K]
423.0              !upper temperature limit [K]
50000.0            !upper pressure limit [kPa]
12.23              !maximum density [mol/L]
CPP                                    !pointer to Cp0 model
138.01                                 !molecular weight [g/mol]
176.0                                  !triple point temperature [K]
32.3                                   !pressure at triple point [kPa]
12.22                                  !density at triple point [mol/L]
194.91                                 !normal boiling point temperature [K]
0.2547                                 !acentric factor
293.023         3053.7    4.518        !Tc [K], pc [kPa], rhoc [mol/L]
293.023                   4.518        !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
 0.11492932E+01      0.25    1.0     0 !a(i),t(i),d(i),l(i)
-0.31559702E+01      1.125   1.0     0
 0.11049528E+01      1.5     1.0     0
-0.16108299E+00      1.375   2.0     0
 0.12023075E+00      0.25    3.0     0
 0.30900874E-03      0.875   7.0     0
 0.45033089E+00      0.625   2.0     1
-0.53063436E-01      1.75    5.0     1
-0.35244675E+00      3.625   1.0     2
-0.12109266E+00      3.625   4.0     2
-0.47542899E-01     14.5     3.0     3
 0.27912957E-01     12.0     4.0     3


#AUX               !auxiliary model specification
CPP  ideal gas heat capacity function of Lemmon (1996).
?LITERATURE REFERENCES \
?
!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          8.314472                  !reducing parameters for T, Cp0
  5  0    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
 0.246292d+1       0.00                !c(i), power of T
 0.400318d-1       1.00
-0.873082d-7       3.00
 0.100705d-9       4.00
-0.358765d-13      5.00


@EOS               !equation of state specification
FE1  Helmholtz equation of state for R-116 of Kozlov (1996).
?LITERATURE REFERENCE \
?private communication with Dr. Alexander  D. Kozlov, Director,
?VNITs SMV Russian Research Center for Standartization Information
?and Certification of Materials, Nahimovsky prospect, 31, bld. 2
?Moscow 117418, Russia.
?[e-mail]
?\
!end of info section
176.0              !lower temperature limit [K]
423.0              !upper temperature limit [K]
50000.0            !upper pressure limit [kPa]
12.23              !maximum density [mol/L]
CP1                                    !pointer to Cp0 model
138.01                                 !molecular weight [g/mol]
176.0                                  !triple point temperature [K]
32.09                                  !pressure at triple point [kPa]
12.231                                 !density at triple point [mol/L]
194.98                                 !normal boiling point temperature [K]
0.25396                                !acentric factor
293.03       3042.0       4.5069198    !Tc [K], pc [kPa], rhoc [mol/L]
293.03                    4.5069198    !reducing parameters [K, mol/L]
8.31451                                !gas constant [J/mol-K]
      23  4      0  0       0  0       !# terms, # coeff/term for:  "normal" terms, critical, spare
  2.1775273D0       0.25    1.     0   !a(i),t(i),d(i),l(i)
 -5.5052198D0       1.00    1.     0
 -1.3675742D0       3.00    1.     0
 -8.1284229D-1      4.00    1.     0
 -4.0207525D-1      0.25    2.     0
  2.5890073D0       1.00    2.     0
  1.4500537D0       3.50    2.     0
 -1.0445036D0       1.50    3.     0
  9.8965288D-1      2.50    3.     0
 -8.6794888D-1      3.00    4.     0
  2.8240917D-1      3.00    5.     0
  4.5154220D-2      1.00    6.     0
 -3.0294024D-2      3.00    6.     0
 -1.7668398D-2      1.00    7.     0
  2.0592774D-3      1.00    8.     0
  4.2059839D0       2.00    1.     1
  2.1500380D-1      5.00    1.     2
 -1.6449561D-1      2.00    4.     2
 -1.2396086D-1      4.00    4.     2
  1.5814552D-1      8.00    5.     3
 -1.4362345D-1      10.0    5.     3
  1.8637877D-2      10.0    8.     3
  1.6342835D-2      18.0    4.     4


#AUX               !auxiliary model specification
CP1  ideal gas heat capacity function of Kozlov (1996).
?LITERATURE REFERENCES \
?private communication with Dr. Alexander  D. Kozlov, Director,
?VNITs SMV Russian Research Center for Standartization Information
?and Certification of Materials, Nahimovsky prospect, 31, bld. 2
?Moscow 117418, Russia.
?[e-mail]
?
!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
  6  0    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
 27.4009901        0.00                !c(i), power of T
-2.6057376855D-06  2.00
 9.7501305219D-10  3.00
-6559.250418      -1.00
 787904.9649      -2.00
-34166787.86      -3.00


@EOS               !equation of state specification
ECS  Extended Corresponding States model w/ T- and rho-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.\
?\
?extended by the addition of density-dependent shape factors based on
? fit by E.W. Lemmon, 12-2-96\
?
!end of info section
176.0              !lower temperature limit [K]
500.0              !upper temperature limit [K]
60000.0            !upper pressure limit [kPa]
12.29              !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
0.256              !acentric factor for fluid used in shape factor correlation
293.03             !critical temperature [K]
3042.0             !critical pressure [kPa]
4.5069198          !critical density [mol/L]
2                         !number of temperature coefficients for 'f' shape factor
  0.463297447E+00  0      !alpha1 of Huber & Ely
 -0.511776783E+00  1      !alpha2 of Huber & Ely (log(Tr) term)
1                         !number of density coefficients for 'f' shape factor
  0.707956644E-02  1
3                         !number of temperature coefficients for 'h' shape factor
 -0.404678693E+01  0      !beta1 of Huber & Ely
 -0.239087880E+01  1      !beta2 of Huber & Ely (log(Tr) term)
 -0.169059282E+00  1
0                         !number of density coefficients for 'h' shape factor


#TRN               !transport model specification
ECS  Extended Corresponding States model (R134a reference); fit to limited 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:\
?\
?Tauscher, W. (1967). "Thermal conductivity of liquid refrigerants
? measured by an unsteady state hot wire method".Kaltetechnik, 19:288-292.
?
?Gunchuk, B.V., Zhelezny, V.P., Zhosul, I. (1989). "Study of density, viscosity, thermal conductivity,
? surface tension of refrigerants R116, R132B2, R318, R329 and azeotropic mixtures of
? R116-R23, R116-R13 at the boiling line", Teplofizicheskiye svoysta veshchestv i materialov,
? part 28,93-106.
?
?Potapov, M.D. (1988). "The thermal conductivity of liquid binary mixtures of halogenated
? hydrocarbons", PhD Thesis, OTIPP, Odessa.
?
?Clifford, A.A., Dickinson, E. and Gray, P. (1996)."Thermal conductivity of gaseous alkanes
? + perfluoroalkane mixtures", J. Chem. Soc. Far. Trans. I, 1997.
?
?\
?Average absolute deviations of the fit from the experimental data were:\
?  Tauscher:  2.57%; Gunchuk: 1.15%; Potapov: 1.20%; Clifford: 3.93%
?  Overall:  1.37%\
?
?\
?DATA SOURCES FOR VISCOSITY\
?The ECS parameters for viscosity were based on the data of:\
?\
?Gunchuk, B.V., Zhelezny, V.P., Zhosul, I. (1989). "Study of density, viscosity, thermal conductivity,
? surface tension of refrigerants R116, R132B2, R318, R329 and azeotropic mixtures of
? R116-R23, R116-R13 at the boiling line", Teplofizicheskiye svoysta veshchestv i materialov,
? part 28,93-106.
?
?Dunlop, P.J. (1994). "Viscosities of a series of gaseous fluorocarbons at 25C", J.Chem.Phys. 100(4):3149-3151.
?
?Average absolute deviations of the fit from the experimental data were:\
?   Gunchuk:  0.88%; Dunlop: 1.06%
?   Overall:   0.89%\
?\
?The Lennard-Jones parameters are estimated.\
?
!end of info section
176.0              !lower temperature limit [K]
423.0              !upper temperature limit [K]
50000.0            !upper pressure limit [kPa]
12.23              !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)
0.5249             !Lennard-Jones coefficient sigma [nm] for ECS method from scaling R134a
226.16             !Lennard-Jones coefficient epsilon/kappa [K] for ECS method from scaling R134a
1  0  0                       !number of terms in f_int term in Eucken correlation, spare1, spare2
 1.3200d-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
 1.21996d+0   0.0   0.0   0.0 !coeff, power of Tr, power of Dr, spare
-6.47835d-2   0.0   1.0   0.0 !coeff, power of Tr, power of Dr, spare
2  0  0                       !number of terms in chi (t.c. shape factor): poly,spare1,spare2
0.118041E+01  0.0   0.0   0.0 !coeff, power of Tr, power of Dr, spare
-0.539975E-01 0.0   1.0   0.0 !coeff, power of Tr, power of Dr, spare
TK6                           !pointer to critical enhancement auxiliary function


#AUX               !thermal conductivity critical enhancement model
TK6  simplified thermal conductivity critical enhancement of Olchowy and Sengers
?LITERATURE REFERENCE \
?Olchowy, G.A. and Sengers, J.V.,
? "A simplified representation for the thermal conductivity of fluids in the
? critical region,"
? Int. J. Thermophysics, 10:417-426, 1989.
?\
?as applied to CO2 by:
?\
?Vesovic, V., Wakeham, W.A., Olchowy, G.A., Sengers, J.V., Watson, J.T.R.
? and Millat, J.,
? "The transport properties of carbon dioxide,"
? J. Phys. Chem. Ref. Data, 19:763-808, 1990.
?\
!end of info section
176.0              !lower temperature limit [K]
423.0              !upper temperature limit [K]
50000.0            !upper pressure limit [kPa]
12.23              !maximum density [mol/L]
9  0  0  0         !# terms:  CO2-terms, spare, spare, spare
1.0     1.0     1.0      !reducing par for T, rho, tcx (mW/m-K)
0.630d0            !gnu (universal exponent)
1.239d0            !gamma (universal exponent)
1.03d0             !R0 (universal amplitude)
0.063d0            !z (universal exponent--not used for t.c., only viscosity)
1.00d0             !c (constant in viscosity eqn = 1/[2 - (alpha + gamma)/(2*nu)], but often set to 1)
0.194d-9           !xi0 (amplitude) [m]
0.0496             !gam0 (amplitude) [-]
 0.5d-09           !qd_inverse (modified effective cutoff parameter) [m] generic number, not fit to data
 439.545d+00       !tref (reference temperature)=1.5*Tc [K]


#STN        !surface tension specification
ST1  surface tension model of Kozlov (1996).
?LITERATURE REFERENCE \
?Kozlov, A.D., Moscow, 1996.
?
!end of info section
176.0              !lower temperature limit [K]
293.03             !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
2                           !number of terms in surface tension model
293.03                      !critical temperature used in fit (dummy)
 0.05059375  1.29           !sigma0 and n
-0.0119435   2.00           !sigma0 and n


@END
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