r14.fld

一个关于物性计算的软件

R14                !short name
75-73-0            !CAS number
tetrafluoromethane !full name
CF4                !chemical formula
FC-14              !synonym
88.0046            !molecular weight [g/mol]
89.54              !triple point temperature [K] of Simon (1967) Cryogenics 7(6):138
145.10             !normal boiling point [K]
227.51             !critical temperature [K]
3750.0             !critical pressure [kPa]
7.1094194          !critical density [mol/L]
0.1785             !acentric factor
0.0                !dipole moment [Debye]
OTH                !default reference state
300.0   1.0   38242.1052   194.634115     !tref, Pref, Href, Sref (corresponds to u,s = 0 @ Ttp)
6.1                !version number

! compiled by M. McLinden, NIST Physical and Chemical Properties Division, Boulder, Colorado
! 05-30-97  MM, original version
! 07-02-97 EWL, add Bender EOS from Platzer
! 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
! 05-10-02 MLH, added LJ parameters, viscosity and thermal conductivity fits


#EOS               !equation of state specification
FEQ  Helmholtz equation of state for R-14 of Platzer et al. (1990).
?LITERATURE REFERENCE \
?Platzer, B., Polt, A., and Maurer, G.,
? "Thermophysical properties of refrigerants,"
? Berlin:  Springer-Verlag, 1990.\
?\
!end of info section
98.94              !lower temperature limit [K]
623.0              !upper temperature limit [K]
51000.0            !upper pressure limit [kPa]
20.764             !maximum density [mol/L]
CPP                                    !pointer to Cp0 model
88.01                                  !molecular weight [g/mol]
98.94                                  !triple point temperature [K]
0.64144                                !pressure at triple point [kPa]
20.764                                 !density at triple point [mol/L]
145.10                                 !normal boiling point temperature [K]
0.1785                                 !acentric factor
227.51       3750.0       7.1094194    !Tc [K], pc [kPa], rhoc [mol/L]
227.51                    7.1094194    !reducing parameters [K, mol/L]
8.31451                                !gas constant [J/mol-K]
      22  5      0  0       0  0       !# terms, # coeff/term for:  "normal" terms, critical, spare
-0.334698748966d+0  3.000   0.00    0   0.0 !a(i),t(i),d(i),l(i),g(i)
 0.586690904687d+0  4.000   0.00    0   0.0
-0.147068929692d+0  5.000   0.00    0   0.0
 0.103999039623d+1  0.000   1.00    0   0.0
-0.245792025288d+1  1.000   1.00    0   0.0
 0.799614557889d+0  2.000   1.00    0   0.0
-0.749498954929d+0  3.000   1.00    0   0.0
 0.152177772502d+0  4.000   1.00    0   0.0
-0.293408331764d+0  0.000   2.00    0   0.0
 0.717794502866d+0  1.000   2.00    0   0.0
-0.426467444199d-1  2.000   2.00    0   0.0
 0.226562749365d+0  0.000   3.00    0   0.0
-0.391091694003d+0  1.000   3.00    0   0.0
-0.257394804936d-1  0.000   4.00    0   0.0
 0.554844884782d-1  1.000   4.00    0   0.0
 0.610988261204d-2  1.000   5.00    0   0.0
 0.334698748966d+0  3.000   0.00    2   0.99832625d0
-0.586690904687d+0  4.000   0.00    2   0.99832625d0
 0.147068929692d+0  5.000   0.00    2   0.99832625d0
-0.190315426142d+0  3.000   2.00    2   0.99832625d0
 0.716157133959d+0  4.000   2.00    2   0.99832625d0
-0.703161904626d+0  5.000   2.00    2   0.99832625d0


@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.\
?\
?the ideal-gas contribution is computed with a fit based on the values of: \
?Chase, M.W., Davies, C.A., Downey, J.R., Frurip, D.J., McDonald, R.A., and
? Syverd, A.N.,
? "JANAF Thermochemical Tables,"
? Third Edition, J. Phys. Chem. Ref. Data, 14(suppl. 1):1-1856, 1985.\
?\
?and \
?Rodgers, A.S., Chao, J., Wilhoit, R.C., and Zwolinski, B.J.,
? "Ideal gas thermodynamic properties of eight chloro- and fluoromethanes,"
? J. Phys. Chem. Ref. Data, 3:117-140, 1974.\
?\
!end of info section
105.0              !lower temperature limit [K]
300.0              !upper temperature limit [K]
40000.0            !upper pressure limit [kPa]
20.5053            !maximum density [mol/L] (sat liq density at Tmin)
CP1                !pointer to Cp0 model
R134a.fld
BWR                !pointer to reference fluid model
0.32668033         !acentric factor for R134a used in shape factor correlation
0.259147           !critical compressibility for R134a used in correlation
0.17607            !acentric factor for fluid used in shape factor correlation
227.60             !critical temperature [K]
3734.2             !critical pressure [kPa]
7.14285714         !critical density [mol/L] (Vc = 0.14 L/mol)
2                         !number of temperature coefficients for 'f' shape factor
  0.10721687d+0   0       !alpha1 of Huber & Ely
 -0.55228215d+0   1       !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
 -0.54054611d+0   0       !beta1 of Huber & Ely
  0.28813658d+0   1       !beta2 of Huber & Ely (log(Tr) term)
0                         !number of density coefficients for 'h' shape factor


#AUX               !auxiliary model specification
CPP  ideal gas heat capacity function
?LITERATURE REFERENCE \
?Platzer, B., Polt, A., and Maurer, G.,
? "Thermophysical properties of refrigerants,"
? Berlin:  Springer-Verlag, 1990.\
?\
!end of info section
98.94              !lower temperature limit [K]
623.0              !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
  5  0    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
 0.39465247d+1    0.0
-0.88586725d-2    1.0
 0.13939626d-3    2.0
-0.30056204d-6    3.0
 0.20504001d-9    4.0


#AUX               !auxiliary model specification
CP1  ideal gas heat capacity function
?LITERATURE REFERENCE \
?polynomial fit for ideal gas heat capacity based on values of: \
?Chase, M.W., Davies, C.A., Downey, J.R., Frurip, D.J., McDonald, R.A., and
? Syverd, A.N.,
? "JANAF Thermochemical Tables,"
? Third Edition, J. Phys. Chem. Ref. Data, 14(suppl. 1):1-1856, 1985.\
?\
?and \
?Rodgers, A.S., Chao, J., Wilhoit, R.C., and Zwolinski, B.J.,
? "Ideal gas thermodynamic properties of eight chloro- and fluoromethanes,"
? J. Phys. Chem. Ref. Data, 3:117-140, 1974.\
?\
!end of info section
100.0              !lower temperature limit [K]
500.0              !upper temperature limit [K]
0.0                !upper pressure limit [kPa]
0.0                !maximum density [mol/L]
1.0          1.0                       !reducing parameters for T, Cp0
  4  0    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
 2.38962d+1     0.00                   !c(i), power of T
 8.61597d-2     1.00
 2.34053d-4     2.00
-3.60942d-7     3.00


#TRN               !transport model specification
ECS  Extended Corresponding States model (nitrogen 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:\
?\
?Imaishi, N., Kestin, J., Paul, R. (1985). "Thermal conductivity of
? carbon tetrafluoride with argon and helium", Int. J. Thermophys 6(1):3-20.
?
?Oshen, S., Rosenbaum, B.M., Thodos, G. (1967) "Thermal conductivity
? of carbon tetrafluoride in the dense gaseous region", J. Chem. Phys 46(8):2939-2944.
?
?Rosenbaum, B.M., Thodos, G. (1967). "Thermla conductivity of mixtures in the
? dense gaseous state: the methane-carbon tetrafluoride system"
? Physica 37:442-456.
?
?Millat,J., Ross, M. Wakeham, W.A. and Zalaf, M. (1988). "The thermal
? conductivity of neon, methane and tetrafluoromethane", Physica 148A:124-152.
?
?Zaporozhan, G. V.; and Geller, V. Z.(1977) "Experimental Investigation
? of the Thermal Conductivity Coefficient of Freons R-13 and R-14 at
? Low Temperature", Zh. Fiz. Khim.,51, 1056-9.
?
?Average absolute deviations of the fit from the experimental data were:\
?  Imaishi:  3.79%; Oshen:  3.94%; Rosenbaum: 9.29%; Millat:  2.17%;
?  Zaporozhan: 8.87%;
?  Overall:  6.01%\
?\
?DATA SOURCES FOR VISCOSITY\
?The ECS parameters for viscosity were based on the data of:\
?
?Kestin, J., Khalifa, H.E., Ro, S.T., and Wakeham, W.A. (1977).
? "The viscosity and diffusion coefficeints of eighteen binary gaseous
? systems", Physica 88A, 242-260.
?
?Maitland, G.C., Smith, E.B. (1974). "Viscositites of binary gas mixtures
? at high temperatures", J. Chem Soc. Trans Far. Soc I, 70, 1191-1211.
?
?Rasskazov, D. C.; Babikov, Yu. M.; and Filatov, N. Ya.(1975)
? "Experimental investigation of viscosity of some methane row refrigerants"
? Tr. Mosk. Energ. Inst., No. 234, 90-5
?
?Ivanchenko, S. I.(1974). "Dynamic Viscosity Investigation of Freons of
? Methane and Ethane Rows"Ph.D. Dissertation, Tekhnol. Inst. Pisch. Promst.,
? Odessa, USSR
?
?Average absolute deviations of the fit from the experimental data were:\
?  Kestin:  0.92%; Maitland:  2.13%; Rasskazov:  2.67%; Ivanchenko:  1.73%;
?  Overall:  1.87%\
?\
?The Lennard-Jones parameters are from:\
?Millat, J., Vesovic, V. and Wakeham, W.A. (1991) "The viscosity of nitrous oxide
? and tetrafluoromethane in the limit of zero density", Int.J. Thermophy.12(2):265-273.
?
?
!end of info section
89.54              !lower temperature limit [K]
623.0              !upper temperature limit [K]
51000.0            !upper pressure limit [kPa]
20.764             !maximum density [mol/L]
FEQ nitrogen.fld
VS1                !model for reference fluid viscosity
TC1                !model for reference fluid thermal conductivity
1                  !Lennard-Jones flag (0 or 1) (0 => use estimates)
0.4543             !Lennard-Jones coefficient sigma [nm] for ECS method
164.44             !Lennard-Jones coefficient epsilon/kappa [K] for ECS method
2  0  0                       !number of terms in f_int term in Eucken correlation, spare1, spare2
1.19864d-3   0.0   0.0   0.0  !coeff, power of T, spare 1, spare 2
1.90048d-7   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
 1.10941d+0   0.0   0.0   0.0 !coeff, power of Tr, power of Dr, spare
-6.30268d-02  0.0   1.0   0.0 !coeff, power of Tr, power of Dr, spare
1  0  0                       !number of terms in chi (t.c. shape factor): poly,spare1,spare2
1.04418d+0   0.0   0.0   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
89.54              !lower temperature limit [K]
623.0              !upper temperature limit [K]
51000.0            !upper pressure limit [kPa]
20.764             !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) [-]
2.26566d-10        !qd_inverse (modified effective cutoff parameter) [m] fit to data
 341.265d+00       !tref (reference temperature)=1.5*Tc [K]


#STN        !surface tension specification
ST1  surface tension model of Soares et al. (1986).
?LITERATURE REFERENCE \
?Soares, V.A.M., Almeida, B.J.V.S., McLure, I.A., and Higgins, R.A.,
? "Surface tension of pure and mixed simple substances at low temperature,"
? Fluid Phase Equilibria, 32:9-16, 1986.\
?\
?Note:  Soares et al. report results for two samples of R14.  The values for
? the higher purity "Sheffield" sample are adopted here.
?\
!end of info section
 86.4              !lower temperature limit [K]
227.51             !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
1                           !number of terms in surface tension model
227.50                      !critical temperature used in fit (dummy)
 0.043721    1.26           !sigma0 and n


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