isobutan.fld

一个关于物性计算的软件

 1.                 0.0    0.00  1.00  0
-1.                 0.0    1.00  0.00  0
NUL                !pointer to critical enhancement auxiliary function (none used)


#AUX               !collision integral specification
CI1  collision integral model of Vogel et al. (2000).
?LITERATURE REFERENCE \
?Vogel, E., Kuechenmeister, C., and Bich, E.,
? "Viscosity Correlation for Isobutane over Wide Ranges of the Fluid Region,"
? Int. J. Thermophys, 21(2):343-356, 2000.
?\
!end of info section
113.55             !lower temperature limit [K]
600.0              !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
3                  !number of terms
 0.53583008   0    !coeff, power of Tstar
-0.45629630   1
 0.049911282  2


@ETA               !viscosity model specification
VS2  pure fluid viscosity model of Younglove and Ely (1987).
?LITERATURE REFERENCE \
?Younglove, B.A. and Ely, J.F.,
? "Thermophysical properties of fluids. II. Methane, ethane, propane,
? isobutane and normal butane,"
? J. Phys. Chem. Ref. Data, 16:577-798, 1987.
?\
?The uncertainty in viscosity is 2%, except in the critical region which is 10%.
?\
?N.B.  all temperatures on IPTS-68
?\
!end of info section
113.55             !lower temperature limit [K]
600.0              !upper temperature limit [K]
35000.             !upper pressure limit [kPa]
12.90              !maximum density [mol/L]
CI2                !pointer to collision integral model
0.509217           !Lennard-Jones coefficient sigma [nm]
418.0              !Lennard-Jones coefficient epsilon/kappa [K]
 2.0352526600d-1   !const in Eq 19 = 5/16*(k*MW/1000/pi/Na)**0.5*1.0d12
 0.5               !exponent in Eq 19 for T
 1.6878386520d+0   !coeff for initial density dependence of viscosity (eq 21); Fv(1)
 0.0               !Fv(2)
 1.40              !Fv(3)
 407.85            !Fv(4)
-0.2055498053d+2   !coefficients for residual viscosity, eqs (22 - 25)
 0.1357076181d+4   !Ev(2)
 0.1893774336d+2   !Ev(3)
-0.1822277344d+5   !Ev(4)
-0.4599387773d-2   !Ev(5)
 0.6305247065d+2   !Ev(6)
 0.1282253921d+5   !Ev(7)
 3.86              !Ev(8)
NUL                !pointer to critical enhancement auxiliary function (none used)


#AUX               !auxiliary model specification
CI2  collision integral model of Younglove and Ely (1987).
?LITERATURE REFERENCE \
?Younglove, B.A. and Ely, J.F.,
? "Thermophysical properties of fluids. II. Methane, ethane, propane,
? isobutane and normal butane,"
? J. Phys. Chem. Ref. Data, 16:577-798, 1987.
?\
?N.B.  all temperatures on IPTS-68
?\
!end of info section
134.86             !lower temperature limit [K]
500.0              !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
9                  !number of terms
 -3.0328138281     !Omega (eq 20): coeffs of {(e/kT)**((4-n)/3)}
 16.918880086      !N.B.  there is misprint in Younglove and Ely, the exponent
-37.189364917      !      is ((4-n)/3) not ((n+2)/3)
 41.288861858
-24.61592114
  8.948843096
 -1.8739245042
  0.209661014      !N.B.  wrong sign in Younglove and Ely, Table 2
 -0.009657044


@TRN               !transport model specification
ECS  Extended Corresponding States model (Nitrogen reference); predictive mode.
?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.
?\
?Thermal conductivity and viscosity data used in the development of the
? extended corresponding states correlations were taken from:
?\
?Younglove, B.A. and Ely, J.F.,
? "Thermophysical properties of fluids. II. Methane, ethane, propane,
? isobutane and normal butane,"
? J. Phys. Chem. Ref. Data, 16:577-798, 1987.
?\
?the Lennard-Jones parameters are taken from:
?\
?Reid, R.C., Prausnitz, J.M., and Poling, B.E.,
? "The Properties of Gases and Liquids,"
? 4th edition, New York, McGraw-Hill Book Company, 1987.
?\
!end of info section
113.55             !lower temperature limit [K]
600.0              !upper temperature limit [K]
35000.0            !upper pressure limit [kPa]
12.90              !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)
0.5278             !Lennard-Jones coefficient sigma [nm] for ECS method
330.1              !Lennard-Jones coefficient epsilon/kappa [K] for ECS method
1  0  0                       !number of terms in f_int term in Eucken correlation, spare1, spare2
 1.3200d-3   0.0   0.0   0.0  !coeff, power of T, spare 1, spare 2
1  0  0                       !number of terms in psi (visc shape factor): poly,spare1,spare2
 1.0000d+0   0.0   0.0   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
 1.0000d+0   0.0   0.0   0.0  !coeff, power of Tr, power of Dr, spare


#STN        !surface tension specification
ST1  surface tension model of Baidakov and Sulla (1985).
?LITERATURE REFERENCE \
?Baidakov, V.G. and Sulla, I.I.
? "Surface tension of propane and isobutane at near-critical temperatures,"
? Russian Journal of Physical Chemistry, 59:551-554, 1985.
?\
!end of info section
113.55             !lower temperature limit [K]
407.85             !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
2                           !number of terms in surface tension model
407.8                       !critical temperature used by Baidakov and Sulla (dummy)
 0.05756     1.290          !sigma0 and n
-0.009554    2.290


#DE         !dielectric constant specification
DE1  dielectric constant model of Younglove and Ely (1987).
?LITERATURE REFERENCE \
?Younglove, B.A. and Ely, J.F.,
? "Thermophysical properties of fluids. II. Methane, ethane, propane,
? isobutane and normal butane,"
? J. Phys. Chem. Ref. Data, 16:577-798, 1987.
?\
?The uncertainty in dielectric constant is 0.05%.
?\
!end of info section
83.80              !lower temperature limit [K]
150.6633           !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
407.85  1.0  1.0   !reducing parameters for t, d, and p
4 1 0 0 0 0                         !number of terms in dielectric constant model
  0.19867026d-1   0.    1.    0.    !coef, t exp, d exp, p exp
  0.17600053d-3   0.    2.    0.
 -0.15267372d-4   0.    3.    0.
 -0.56375024d-6   0.    1.    1.
  0.99472904d-3   0.    1.    0.


#MLT        !melting line specification
ML1  melting line model of Younglove and Ely (1987).
?LITERATURE REFERENCE \
?Younglove, B.A. and Ely, J.F.,
? "Thermophysical properties of fluids. II. Methane, ethane, propane,
? isobutane and normal butane,"
? J. Phys. Chem. Ref. Data, 16:577-798, 1987.
?\
!end of info section
113.55             !lower temperature limit [K]
600.0              !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
1.       1000.     !reducing temperature and pressure
2 0 0 0 0 0                 !number of terms in melting line equation
-42.9999189263  0.          !coefficients and exponents
 0.137382d-10   6.08


#PS         !vapor pressure equation
PS6  vapor pressure equation of Miyamoto and Watanabe (2001).
?LITERATURE REFERENCE \
?See EOS
?\
!end of info section
113.56             !lower temperature limit [K]
407.817            !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
407.817 3640.0     !reducing parameters
4 0 0 0 0 0                 !number of terms in equation
 -6.995565           2.     !coefficients and exponents
  1.754758           3.
 -1.833831           5.
 -2.19197            9.


#DL         !saturated liquid density equation
DL3  saturated liquid density equation of Miyamoto and Watanabe (2001).
?LITERATURE REFERENCE \
?See EOS
?\
!end of info section
113.56             !lower temperature limit [K]
407.817            !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
407.817 3.8601429  !reducing parameters
3 0 0 0 0 0                 !number of terms in equation
 1.60562             0.33   !coefficients and exponents
-2.374095            1.0
 2.098763            1.1


#DV         !saturated vapor density equation
DV3  saturated vapor density equation of Miyamoto and Watanabe (2001).
?LITERATURE REFERENCE \
?See EOS
?\
!end of info section
113.56             !lower temperature limit [K]
407.817            !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
407.817 3.8601429  !reducing parameters
5 0 0 0 0 0                 !number of terms in equation
 -1.523942           0.33   !coefficients and exponents
 -4.792479           0.8
 -9.282003           2.3
 -26.37251           4.4
 -85.56735           10.0


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