r218.fld

一个关于物性计算的软件

R218               !short name
76-19-7            !CAS number
octafluoropropane  !full name
CF3CF2CF3          !chemical formula
perfluoropropane   !synonym
188.019            !molecular weight [g/mol]
113.0              !melting point temperature [K] (note: not triple point)
236.32             !normal boiling point [K]
345.1              !critical temperature [K]
2671.0             !critical pressure [kPa]
3.34               !critical density [mol/L]
0.321              !acentric factor
0.14               !dipole moment [Debye]
IIR                !default reference state
6.1                !version number

! compiled by E.W. Lemmon, NIST Physical and Chemical Properties Division, Boulder, Colorado
! 05-08-98 EWL, original version
! 10-13-99 EWL, add Span and Lemmon equation
! 11-02-99 EWL, reduce sigma0 by factor of 1000.
! 11-10-99 EWL, change ptp and dtp
! 05-23-02 MLH, revised transport


#EOS               !equation of state specification
FEQ  Helmholtz equation of state for R-218 of Lemmon and Span (2001).
?LITERATURE REFERENCE \
?Lemmon, E.W. and Span, R.,
? preliminary equation, 2001.
?\
!end of info section
113.0              !lower temperature limit [K]
500.0              !upper temperature limit [K]
30000.0            !upper pressure limit [kPa]
10.86              !maximum density [mol/L]
CPP                                    !pointer to Cp0 model
188.01933                              !molecular weight [g/mol]
113.0                                  !triple point temperature [K]
0.000117                               !pressure at triple point [kPa]
10.857                                 !density at triple point [mol/L]
236.32                                 !normal boiling point temperature [K]
0.321                                  !acentric factor
345.1        2671.0       3.34008211   !Tc [K], pc [kPa], rhoc [mol/L]
345.1                     3.34008211   !reducing parameters [K, mol/L]
8.314472                               !gas constant [J/mol-K]
      12  4      0  0       0  0       !# terms, # coeff/term for:  "normal" terms, critical, spare
   0.134857E+01      0.25    1.0     0 !a(i),t(i),d(i),l(i)
  -0.406184E+01      1.25    1.0     0
   0.117502E+01      1.5     1.0     0
   0.110628E+00      0.25    3.0     0
   0.386066E-03      0.875   7.0     0
   0.928834E+00      2.375   1.0     1
   0.118412E+01      2.0     2.0     1
  -0.343218E-01      2.125   5.0     1
  -0.629276E+00      3.5     1.0     2
   0.136362E-01      6.5     1.0     2
  -0.197071E+00      4.75    4.0     2
  -0.338588E-01     12.5     2.0     3


#AUX               !auxiliary model specification
CPP  ideal gas heat capacity function
?LITERATURE REFERENCE \
?Lemmon, E.W. and Span, R.,
? preliminary equation, 2001.
?\
!end of info section
113.0              !lower temperature limit [K]
500.0              !upper temperature limit [K]
0.0                !upper pressure limit [kPa]
0.0                !maximum density [mol/L]
1.0          8.314472                  !reducing parameters for T, Cp0
  4  0    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
 0.21918586E+01    0.00
 0.71178470E-01    1.00
-0.70902815E-04    2.00
 0.25424007E-07    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.\
?\
?ECS parameters fitted by E.W. Lemmon, NIST, 05-08-98\
?Average absolute deviations of the fit from the experimental data were:\
?   PVT(vapor): 0.21%;  Snd: 0.43%;  Psat: 0.28%;  Dsat(liq.): 0.20%
?\
?DATA SOURCES\
?Brown, J.A. and Mears, W.H. Physical Properties of n-Perfluorobutane.
? J. Phys. Chem., 62:960-62 (1958).\
?\
?Grebenkov, A.J., Kotelevsky, Yu.G., Saplitza, V.V., Beljaeva, O.V.,
? Zajatz, T.A., and Timofeev, B.D.  Experimental Study of Thermal Conductivity
? of Some Ozone Safe Refrigerants and Speed of Sound in their Liquid Phase.
? Proc, CFC's: The Day After, IIR Comm B1, B2, E1, E2, 21-23 (1994).\
?\
?Bouchot, C. and Richon, D.  Gas, Liquid, and Saturated Vapor-Liquid
? Densities and Vapor Pressures of Difluoromethane (R-32) and
? Octafluoropropane (R-218) at Temperatures from 253 K to 333 K and
? Pressure up to 14.5 MPa.
? Int. Electron. J. Phys.-Chem. Data, 3:1-16 (1997).\
?\
?Defibaugh, D.R. and Moldover, M.R.  Compressed and Saturated Liquid
? Densities for 18 Halogenated Organic Compounds.
? J. Chem. Eng. Data, 42(1):160-168 (1997).\
?\
!end of info section
113.0              !lower temperature limit [K]
500.0              !upper temperature limit [K]
30000.0            !upper pressure limit [kPa]
11.3               !maximum density [mol/L]
CP1                !pointer to Cp0 model
Propane.fld
BWR                !pointer to reference fluid model
0.15238            !acentric factor for propane used in shape factor correlation
0.27627            !critical compressibility for propane used in correlation
0.325              !acentric factor for fluid used in shape factor correlation
345.023            !critical temperature [K]
2680.05            !critical pressure [kPa]
3.34               !critical density [mol/L]
3                         !number of temperature coefficients for 'f' shape factor
  0.568629397d+00  0      !alpha1 of Huber & Ely
 -0.692246078d+00  1      !alpha2 of Huber & Ely (log(Tr) term)
 -0.600221601d-01  1
1                         !number of density coefficients for 'f' shape factor
 -0.192641064d-01  1
2                         !number of temperature coefficients for 'h' shape factor
 -0.580429710d+00  0      !beta1 of Huber & Ely
  0.277242325d+00  1      !beta2 of Huber & Ely (log(Tr) term)
1                         !number of density coefficients for 'h' shape factor
  0.475520255d-01  1


#AUX               !auxiliary model specification
CP1  ideal gas heat capacity function
?LITERATURE REFERENCE \
?Fang, F. and Joffe, J.
? "Thermodynamic properties of perfluoropropane,"
? J. Chem. Eng. Data, 11(3):376-9, 1966.\
?\
!end of info section
100.0              !lower temperature limit [K]
600.0              !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
 0.15555084d+01    0.00
 0.74772310d-01    1.00
-0.77037439d-04    2.00
 0.28830360d-07    3.00


#TRN               !transport model specification
ECS  Extended Corresponding States model (propane reference); fit 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:\
?
?Tsvetkov, O. B.; Laptev, Yu. A.; and Vasilkov, A. I.(1997),"The Results of Measurements
? of Thermal Conductivity of Gaseous Freons with the Heating Wire Method",
? Mashinyi i Apparatyi Cholodilnoj, Kriogennoh Techniki i  Kondizionirovaniyi Vosducha,
? Collect No. 2, 54-6, Leningradskij Tech. Inst.
?
?Clifford, A.A., Dickinson, E. and Gray, P. (1996)."Thermal conductivity of gaseous alkanes
? + perfluoroalkane mixtures", J. Chem. Soc. Far. Trans. I, 1997.
?\
?Grebenkov, A.J., Zhelezny, V.P., Klepatsky, P.M.,Beljaeva, O.V., Chernjal, Yu. A.,
? Kotelevsky, Yu. G. and Timofejev, B.D.(1996), "Thermodynamic and Treansport Properties
? of Some Ozone-Safe Refrigerants for Industrial Refrigeration Equipment:
? Study in Belarus and Ukraine", Int. J. Thermophys. 17(3) 535-549.\
?\
?Average absolute deviations of the fit from the experimental data were:\
?  Tsvetkov:  2.10%; Clifford: 3.72%; Grebenkov: 1.90%;
?  Overall:  1.93%\
?\
?DATA SOURCES FOR VISCOSITY\
?The ECS parameters for viscosity were based on the data of:\
?\
?Geller, V. Z.,(1980). "Investigation of the Viscosity of Freons of the Methane, Ethane,
? and Propane Types. Summary of Experimental Data",Teplofiz. Svoistva Veshchestv.
? Mater., No. 15, Sychev, V. V., Ed., Standards Publ.: Moscow, pp. 89-114.
?
?Dunlop, P.J. (1994). "Viscosities of a series of gaseous fluorocarbons at 25C", J.Chem.Phys. 100(4):3149-3151.
?
?Lapardin, N. I. (1983),"Investigation of the Viscosity of Freons R 152A and R 218"
? Ph.D. Thesis, OTIKhP, Odessa
?
?Bondar', G. E. (1984), "The Viscosity of Freons at Low Temperature",
? Ph.D. Thesis, OTIKhP, Odessa
?
?Average absolute deviations of the fit from the experimental data were:\
?   Geller:  2.71%; Dunlop: 0.72%; Lapardin:10.36%; Bondar: 3.36%
?   Overall:   4.39%\
?
?Lennard-Jones parameters are estimated.
?\
!end of info section
113.0              !lower temperature limit [K]
500.0              !upper temperature limit [K]
30000.0            !upper pressure limit [kPa]
10.86              !maximum density [mol/L]
FEQ propane.fld
VS1                !model for reference fluid viscosity
TC1                !model for reference fluid thermal conductivity
1                  !Lennard-Jones flag (0 or 1) (0 => use estimates)
0.58               !Lennard-Jones coefficient sigma [nm] for ECS method
266.35             !Lennard-Jones coefficient epsilon/kappa [K] for ECS method
2  0  0                       !number of terms in f_int term in Eucken correlation, spare1, spare2
8.92659d-04  0.0   0.0   0.0  !coeff, power of T, spare 1, spare 2
1.14912d-06  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
1.102250d+0   0.0   0.0   0.0  !coeff, power of Tr, power of Dr, spare
-5.50442d-03  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
1.28770d+0     0.0   0.0   0.0 !coeff, power of Tr, power of Dr, spare
-7.58811d-02    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
113.0              !lower temperature limit [K]
500.0              !upper temperature limit [K]
30000.0            !upper pressure limit [kPa]
10.86              !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) [-]
 1.09043d-09       !qd_inverse (modified effective cutoff parameter) [m]  fit to data
 517.65d+00        !tref (reference temperature)=1.5*Tc [K]


#STN        !surface tension specification
ST1  surface tension model of McLure et al. (1982).
?LITERATURE REFERENCE \
?McLure, I.A., Soares, V.A.M., and Edmonds, B.,
? "Surface tension of perfluoropropane, perfluoro-n-butane, perfluoro-n-hexane,
? perfluoro-octane, perfluorotributylamine and n-pentane,"
? J. Chem. Soc., Faraday Trans. 1, 78(7):2251-7, 1982.\
?\
!end of info section
113.0              !lower temperature limit [K]
345.023            !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
1                           !number of terms in surface tension model
345.023                     !critical temperature used in fit (dummy)
 0.04307     1.22           !sigma0 and n


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