butane.fld

一个关于物性计算的软件

?\
!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
3                  !number of terms
 0.17067154   0    !coeff, power of Tstar
-0.48879666   1
 0.039038856  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 5%.
?\
?N.B.  all temperatures on IPTS-68
?\
!end of info section
134.86             !lower temperature limit [K]
500.0              !upper temperature limit [K]
70000.0            !upper pressure limit [kPa]
13.20              !maximum density [mol/L]
CI2                !pointer to collision integral model
0.503103           !Lennard-Jones coefficient sigma [nm]
440.0              !Lennard-Jones coefficient epsilon/kappa [K]
 2.0352457000d-01  !const in Eq 19 = 5/16*(k*MW/1000/pi/Na)**0.5*1.0d12
 0.5               !exponent in Eq 19 for T
 0.1630521851d+01  !coeff for initial density dependence of viscosity (eq 21); Fv(1)
 0.0               !Fv(2)
 1.40              !Fv(3)
 425.16            !Fv(4)
-0.2724386845d+02  !coefficients for residual viscosity, eqs (22 - 25)
 0.8012766611d+03  !Ev(2)
 0.2503978646d+02  !Ev(3)
-0.1309704275d+05  !Ev(4)
-0.8313305258d-01  !Ev(5)
 0.6636975027d+02  !Ev(6)
 0.9849317662d+04  !Ev(7)
 3.920             !Ev(8)
NUL                !pointer to critical enhancement auxiliary function (none used)


#AUX               !collision integral 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
134.86             !lower temperature limit [K]
500.0              !upper temperature limit [K]
70000.0            !upper pressure limit [kPa]
13.20              !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)
0.4687             !Lennard-Jones coefficient sigma [nm] for ECS method
531.4              !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

2  0  0                       !number of terms in psi (visc shape factor): poly,spare1,spare2
 0.801       0.0   0.0   0.0  !coeff, power of Tr, power of Dr, spare
 0.0375   0.0   1.0   0.0
2  0  0                       !number of terms in chi (t.c. shape factor): poly,spare1,spare2
 1.12775     0.0   0.0   0.0  !coeff, power of Tr, power of Dr, spare
-0.0354   0.0   1.0   0.0


#STN        !surface tension specification
ST1  surface tension model; fit of data from Calado (1978) and Coffin (1928).
?LITERATURE REFERENCE \
?fit of the data of:
?\
?Calado, J.C.G., McLure, I.A., and Soares, V.A.M.,
? "Surface tension for octafluorocyclobutane, n-butane and their mixtures
? from 233 K to 254 K, and vapour pressure, excess gibbs function and excess
? volume for the mixture at 233 K,"
? Fluid Phase Equilibria, 2:199-213, 1978.
?\
?Coffin, C.C. and Maass, O.,
? "The preparation and physical properties of alpha-, beta- and gamma-
? butylene and normal and isobutane,"
? J. Am. Chem. Soc., 50:1427-1437, 1928.
?\
!end of info section
134.86             !lower temperature limit [K]
425.16             !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
1                           !number of terms in surface tension model
425.16                      !critical temperature used in fit (dummy)
 0.05418     1.26           !sigma0 and n


#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
425.16  1.0  1.0   !reducing parameters for t, d, and p
4 1 0 0 0 0                         !number of terms in dielectric constant model
 0.20697631d-01   0.    1.    0.    !coef, t exp, d exp, p exp
 0.67345731d-04   0.    2.    0.
-0.66111785d-05   0.    3.    0.
-0.12029820d-05   0.    1.    1.
-0.11151933d-03   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
134.86             !lower temperature limit [K]
500.0              !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
-363.4002539116 0.          !coefficients and exponents
 0.713417d-2    2.21


#PS         !vapor pressure equation
PS6  vapor pressure equation of Miyamoto and Watanabe (2001).
?LITERATURE REFERENCE \
?See EOS
?\
!end of info section
134.87             !lower temperature limit [K]
425.125            !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
425.125 3796.0     !reducing parameters
4 0 0 0 0 0                 !number of terms in equation
 -7.246998           2.     !coefficients and exponents
  2.899084           3.
 -2.506508           4.
 -2.460527           9.


#DL         !saturated liquid density equation
DL3  saturated liquid density equation of Miyamoto and Watanabe (2001).
?LITERATURE REFERENCE \
?See EOS
?\
!end of info section
134.87             !lower temperature limit [K]
425.125            !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
425.125 3.92001679 !reducing parameters
3 0 0 0 0 0                 !number of terms in equation
 1.378063            0.3    !coefficients and exponents
-0.4003577           1.3
 0.3561708           1.7


#DV         !saturated vapor density equation
DV3  saturated vapor density equation of Miyamoto and Watanabe (2001).
?LITERATURE REFERENCE \
?See EOS
?\
!end of info section
134.87             !lower temperature limit [K]
425.125            !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
425.125 3.92001679 !reducing parameters
5 0 0 0 0 0                 !number of terms in equation
 -1.903334           0.33   !coefficients and exponents
 -4.860578           0.9
 -11.11094           2.4
 -28.93348           4.9
 -73.96275           10


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