butane.fld

一个关于物性计算的软件

butane             !short name
106-97-8           !CAS number
n-butane           !full name
CH3-2(CH2)-CH3     !chemical formula
R-600              !synonym
58.1222            !molecular weight [g/mol]
134.87             !triple point temperature [K]
272.6              !normal boiling point [K]
425.125            !critical temperature [K]
3796.0             !critical pressure [kPa]
3.920              !critical density [mol/L]
0.2                !acentric factor
0.020              !dipole moment [Debye] (Smith and Srivastava, Elsevier, 1986)
IIR                !default reference state
6.1                !version number

! compiled by M. McLinden, NIST Physical and Chemical Properties Division, Boulder, Colorado
! 02-01-96  MM, original version
! 03-18-96  MM, add transport correlations compiled by S.A. Klein
! 06-17-96  MM, add thermal conductivity coefficients fitted by S.A. Klein
! 07-08-96  MM, replace temporary Cp0 with function of Younglove and Ely
! 10-03-96  MM, add surface tension fit
! 10-17-96  MM, add thermal conductivity model of Younglove and Ely
! 10-18-96  MM, missing constant in dilute-gas viscosity model
! 02-20-97  MM, add default reference state
! 02-21-97  MM, put viscosity model into revised VS2 format
! 02-26-97  MM, add version number and pointer to visc critical enhancement (both future use)
! 03-06-97  MM, modify ECS-transport to new format
! 03-25-97  MM, set Psi,Chi coeff in ECS-transport to 1,0 pending refit of data
! 08-21-97  MM, purge exponentials from values read by GUI (e.g. model limits)
! 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
! 03-24-98 EWL, set max density to triple-point density (until melting line implemented)
! 11-13-98 EWL, update format to version 6.1
! 11-18-98 EWL, add equation of state of Polt et al. (1992)
! 10-14-99 EWL, update L-J parameters
! 11-01-99 EWL, add Span 12 term short equation of state
! 11-10-99 EWL, add extra digits to melting equation to get ptp at ttp
! 11-22-99 EWL, change ECS reference fluid to nitrogen
! 01-21-00 EWL, change max density of transport eqs. to match eos
! 03-20-00 EWL, change max density to the density at p=2*pmax along melting line
! 07-17-00 EWL, add Vogel viscosity equation
! 03-30-01 MLH, added Perkins et al. thermal conductivity equation (2001)
! 06-01-01 EWL, add Miyamoto and Watanabe equation


#EOS               !equation of state specification
FEQ  Helmholtz equation of state for butane of Miyamoto and Watanabe (2001).
?LITERATURE REFERENCE \
?Miyamoto, H. and Watanabe, K.
? "A Thermodynamic Property Model for Fluid-Phase n-Butane,"
? Int. J. Thermophys., 22(2):459-475, 2001.
?\
?The uncertainties of the equation of state are approximately 0.2%
?in density, 1% in heat capacity, 1% in the speed of sound, and
?0.2% in vapor pressure, except in the critical region.
?\
!end of info section
134.87             !lower temperature limit [K]
589.0              !upper temperature limit [K]
69000              !upper pressure limit [kPa]
13.15              !maximum density [mol/L]
CPP                                    !pointer to Cp0 model
58.1222                                !molecular weight [g/mol]
134.87                                 !triple point temperature [K]
0.000688                               !pressure at triple point [kPa]
12.652                                 !density at triple point [mol/L]
272.6                                  !normal boiling point temperature [K]
0.2                                    !acentric factor
425.125      3796.0       3.92001679   !Tc [K], pc [kPa], rhoc [mol/L]
425.125                   3.92001679   !reducing parameters [K, mol/L]
8.314472                               !gas constant [J/mol-K]
      19  4      0  0       0  0       !# terms, # coeff/term for:  "normal" terms, critical, spare
 2.952054E-01  -0.25    1.0   0        !a(i),t(i),d(i),l(i)
-1.326360E+00   1.50    1.0   0
-2.031317E-03  -0.75    2.0   0
 2.240301E-01   0.00    2.0   0
-3.635425E-02   1.25    3.0   0
 1.905841E-03   1.50    5.0   0
 7.409154E-05   0.50    8.0   0
-1.401175E-06   2.50    8.0   0
-2.492172E+00   1.50    3.0   1
 2.386920E+00   1.75    3.0   1
 1.424009E-03  -0.25    8.0   1
-9.393388E-03   3.00    5.0   1
 2.616590E-03   3.00    6.0   1
-1.977323E-01   4.00    1.0   2
-3.809534E-02   2.00    5.0   2
 1.523948E-03  -1.00    7.0   2
-2.391345E-02   2.00    2.0   3
-9.535229E-03  19.00    3.0   3
 3.928384E-05   5.00   15.0   3

#AUX               !auxiliary model specification
CPP  ideal gas heat capacity function
?LITERATURE REFERENCE \
?Miyamoto, H. and Watanabe, K.
? "A Thermodynamic Property Model for Fluid-Phase n-Butane,"
? Int. J. Thermophys., 22(2):459-475, 2001.
?\
!end of info section
134.87             !lower temperature limit [K]
589.0              !upper temperature limit [K]
0.0                !upper pressure limit [kPa]
0.0                !maximum density [mol/L]
1.0          8.3144720                 !reducing parameters for T, Cp0
  1   4     0  0    0  0  0            !Nterms:  polynomial, exponential, cosh, sinh
 4.240207        0.00000
 5.513671      327.55988
 7.388450     1319.06935
10.250630     4138.63184
11.061010     1864.36783


#AUX               !auxiliary model specification
PH0  ideal gas heat capacity function
?LITERATURE REFERENCE \
?Miyamoto, H. and Watanabe, K.
? "A Thermodynamic Property Model for Fluid-Phase n-Butane,"
? Int. J. Thermophys., 22(2):459-475, 2001.
?\
!end of info section
134.87             !lower temperature limit [K]
589.0              !upper temperature limit [K]
0.0                !upper pressure limit [kPa]
0.0                !maximum density [mol/L]
 1   2   4         !Nterms:  ai*log(tau**ti); ai*tau**ti; ai*log(1-exp(bi*tau))
     3.240207       1.00d0         !ai, ti for [ai*log(tau**ti)] terms
    -5.404217       0.0            !aj, ti for [ai*tau**ti] terms
     4.911360       1.0
    5.513671       -0.7705025      !aj, ti for [ai*log(1-exp(ti*tau)] terms
    7.388450       -3.102780
    10.25063       -9.735094
    11.06101       -4.385458


@EOS               !equation of state specification
BWR  MBWR equation of state for butane 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 uncertainties in density are 0.05% in the liquid, 0.4% in the vapor
?and 0.06% in the supercritical and critical regions.  The uncertainty is
?2% for heat capacities, 1% for the speed of sound in the vapor, and 2%
?for the speed of sound in the liquid.
?\
?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]
CP1                                    !pointer to Cp0 model
58.1222                                !molecular weight [g/mol]
134.86                                 !triple point temperature [K]
6.736d-4                               !pressure at triple point [kPa]
12.650                                 !density at triple point [mol/L]
272.613                                !normal boiling point temperature [K]
0.199586                               !acentric factor
425.16       3796.        3.920        !Tc [K], pc [kPa], rhoc [mol/L]
425.16                    3.920        !reducing parameters [K, mol/L]
3.920                                  !gamma
0.0831434                              !gas constant [L-bar/mol-K]
      32       1                       !Nterm, Ncoeff per term
   0.153740104603d-01  -0.160980034611d+00  -0.979782459010d+01
   0.499660674504d+03  -0.102115607687d+07   0.236032147756d-02
  -0.137475757093d+01  -0.907038733865d+03   0.385421748213d+06
  -0.349453710700d-04   0.157361122714d+00   0.102301474068d+03
   0.182335737331d-01  -0.404114307787d+01   0.187979855783d+01
   0.362088795040d+00  -0.738762248266d-02  -0.218618590563d+01
   0.118802729027d+00   0.706854198713d+06  -0.219469885796d+09
  -0.182454361268d+05   0.206790377277d+10   0.111757550145d+03
   0.558779925986d+05  -0.159579054026d+02  -0.148034214622d+07
  -0.245206328201d+00   0.218305259309d+03  -0.923990627338d-04
  -0.205267776639d+01   0.387639044820d+02


#AUX               !auxiliary model specification
CP1  ideal gas heat capacity function of Younglove and Ely
?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                !upper pressure limit [kPa]
0.0                !maximum density [mol/L]
1.0          8.31434                   !reducing parameters for T, Cp0
  7  1    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
  3.8802310194d+5      -3.00d0
 -1.5444296890d+5      -2.00d0
  2.8455082239d+3      -1.00d0
 -1.3491511376d+1       0.00d0
  6.6142595353d-2       1.00d0
 -2.4307965028d-5       2.00d0
  1.5044248429d-10      3.00d0
 -8.3933423467d+0    3000.d0


@EOS               !equation of state specification
FES  short Helmholtz equation of state for butane of Span (2000).
?LITERATURE REFERENCE \
?Span, R.,
? "Multiparameter Equations of State - An Accurate Source of Thermodynamic
? Property Data," Springer, Berlin, Heidelberg, New York, 2000.
?\
?The uncertainties of the equation of state are approximately 0.2% (to
?0.5% at high pressures) in density, 1% (in the vapor phase) to 2% in
?heat capacity, 1% (in the vapor phase) to 2% in the speed of sound, and
?0.2% in vapor pressure, except in the critical region.
?\
!end of info section
134.86             !lower temperature limit [K]
600.0              !upper temperature limit [K]
100000.0           !upper pressure limit [kPa]
13.20              !maximum density [mol/L]
CPS                                    !pointer to Cp0 model
58.123                                 !molecular weight [g/mol]
134.86                                 !triple point temperature [K]
0.00064578                             !pressure at triple point [kPa]
12.671                                 !density at triple point [mol/L]
272.62                                 !normal boiling point temperature [K]
0.2                                    !acentric factor
425.125      3796.0       3.9199628    !Tc [K], pc [kPa], rhoc [mol/L]
425.125                   3.9199628    !reducing parameters [K, mol/L]
8.31451                                !gas constant [J/mol-K]
      12  4      0  0       0  0       !# terms, # coeff/term for:  "normal" terms, critical, spare
 0.106262770000E+01  0.25    1.0     0 !a(i),t(i),d(i),l(i)
-0.286209520000E+01  1.125   1.0     0
 0.887382330000E+00  1.5     1.0     0
-0.125705810000E+00  1.375   2.0     0
 0.102863090000E+00  0.25    3.0     0
 0.253580410000E-03  0.875   7.0     0
 0.323252000000E+00  0.625   2.0     1
-0.379507610000E-01  1.75    5.0     1
-0.325348020000E+00  3.625   1.0     2
-0.790509690000E-01  3.625   4.0     2
-0.206367210000E-01 14.5     3.0     3
 0.570538090000E-02 12.0     4.0     3


#AUX               !auxiliary model specification
CPS  ideal gas heat capacity function
?LITERATURE REFERENCE \
?Jaeschke, M. and Schley, P.
? "Ideal-Gas Thermodynamic Properties for Natural-Gas Applications,"
? Int. J. Thermophys., 16(6):1381-1392, 1995.
?\
!end of info section
134.86             !lower temperature limit [K]