isobutan.fld

一个关于物性计算的软件

isobutane          !short name
75-28-5            !CAS number
2-methylpropane    !full name
CH(CH3)3           !chemical formula
R-600a             !synonym
58.1222            !molecular weight [g/mol]
113.56             !triple point temperature [K]
261.48             !normal boiling point [K]
407.817            !critical temperature [K]
3640.0             !critical pressure [kPa]
3.860              !critical density [mol/L]
0.185              !acentric factor
0.132              !dipole moment [Debye]; DIPPR: from Nelson, NBS, NSRDS 10 (1967).
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
! 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
! 07-19-96  MM, fix bug on L-J flag for ECS-transport coeff
! 10-03-96  MM, add surface tension fit
! 10-18-96  MM, missing constant in dilute-gas viscosity model
! 10-24-96  MM, add thermal conductivity model of Younglove and Ely
! 10-25-96  MM, add collision integral of Younglove and Ely (needed for conductivity)
!               missing Fv(1) in viscosity model
! 01-31-97  MM, change pointer for ECS reference viscosity from VS3 to VS1
! 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)
! 03-11-97  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
! 01-24-00 EWL, increase max density slightly in 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
! 03-29-01 MLH, new thermal conductivity correlation for ic4 added (Perkins, 2001)
! 05-14-01 EWL, add Miyamoto and Watanabe equation


#EOS               !equation of state specification
FEQ  Helmholtz equation of state for isobutane of Miyamoto and Watanabe (2001).
?LITERATURE REFERENCE \
?Miyamoto, H. and Watanabe, K.
? "A Thermodynamic Property Model for Fluid-Phase Isobutane,"
? Int. J. Thermophys., 23(2):477-499, 2002.
?\
?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
113.56             !lower temperature limit [K]
573.0              !upper temperature limit [K]
35000.0            !upper pressure limit [kPa]
12.90              !maximum density [mol/L]
CPP                                    !pointer to Cp0 model
58.1222                                !molecular weight [g/mol]
113.56                                 !triple point temperature [K]
0.000021                               !pressure at triple point [kPa]
12.738                                 !density at triple point [mol/L]
261.48                                 !normal boiling point temperature [K]
0.185                                  !acentric factor
407.817      3640.0       3.8601429    !Tc [K], pc [kPa], rhoc [mol/L]
407.817                   3.8601429    !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
 2.892737D-1        -0.25    1.0     0 !a(i),t(i),d(i),l(i)
-1.342570D0          1.5     1.0     0
-7.976713D-3        -0.75    2.0     0
 2.025793D-1         0.      2.0     0
-4.241612D-2         1.25    3.0     0
 2.617971D-3         1.5     5.0     0
 5.068955D-5         0.5     8.0     0
-1.144596D-6         2.5     8.0     0
-1.930153D0          1.5     3.0     1
 1.982609D0          1.75    3.0     1
 2.076533D-3        -0.25    8.0     1
-4.958752D-3         3.0     5.0     1
 1.377372D-3         3.0     6.0     1
-1.582662D-1         4.0     1.0     2
-4.961892D-2         2.0     5.0     2
 9.451030D-4        -1.0     7.0     2
-3.037276D-2         2.0     2.0     3
-1.382675D-2        19.0     3.0     3
 8.876254D-5         5.0    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 Isobutane,"
? Int. J. Thermophys., 23(2):477-499, 2002.
?\
!end of info section
113.56             !lower temperature limit [K]
573.0              !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
 4.059347           0.00000
 4.940314         387.75987
 4.090139         972.01102
 9.739581        4235.81166
 15.68832        1772.81924


#AUX               !auxiliary model specification
PH0  ideal gas heat capacity function
?LITERATURE REFERENCE \
?Miyamoto, H. and Watanabe, K.
? "A thermodynamic property model for fluid-phase isobutane,"
? Int. J. Thermophys., 23(2):477-499, 2002.
?\
!end of info section
113.56             !lower temperature limit [K]
573.0              !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))
     3.059347       1.00d0         !ai, ti for [ai*log(tau**ti)] terms
    -6.026745       0.0            !aj, ti for [ai*tau**ti] terms
     5.035251       1.0
     4.940314      -0.9508183      !aj, ti for [ai*log(1-exp(ti*tau)] terms
     4.090139      -2.383449
     9.739581     -10.38655
    15.68832       -4.347095


@EOS               !equation of state specification
BWR  MBWR equation of state for isobutane 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 density is 0.1%.  The uncertainty is
?2% for heat capacities, 0.5% for the speed of sound in the vapor, and 1%
?for the speed of sound in the liquid.
?\
?N.B.  all temperatures on IPTS-68
?\
!end of info section
113.55             !lower temperature limit [K]
600.0              !upper temperature limit [K]
35000.0            !upper pressure limit [kPa]
12.89              !maximum density [mol/L]
CP1                                    !pointer to Cp0 model
58.1222                                !molecular weight [g/mol]
113.55                                 !triple point temperature [K]
1.948d-5                               !pressure at triple point [kPa]
12.755                                 !density at triple point [mol/L]
261.537                                !normal boiling point temperature [K]
0.18534                                !acentric factor
407.85       3640.        3.860        !Tc [K], pc [kPa], rhoc [mol/L]
407.85                    3.860        !reducing parameters [K, mol/L]
3.860                                  !gamma
0.0831434                              !gas constant [L-bar/mol-K]
      32       1                       !Nterm, Ncoeff per term
   0.1307325972d-01   0.3927802742d+00  -0.3185427394d+02
   0.7608825192d+04  -0.1753919859d+07  -0.2090019755d-02
   0.8959557971d+01  -0.6816710130d+04  -0.1111271045d+07
   0.3248737572d-03  -0.1046526456d+01   0.6536598969d+03
   0.3726503734d-01   0.8553649395d+01   0.2109987236d+04
  -0.1401267363d+01   0.5213089327d-01  -0.1925026382d+02
   0.7640067895d+00   0.3425854273d+07  -0.3373475924d+09
   0.1180683444d+06   0.1529683738d+10   0.3323837416d+04
   0.6423169487d+05   0.3891706042d+02  -0.1494755736d+07
  -0.1720240173d-01   0.2894195375d+03   0.2005086329d-02
  -0.4448393005d+00   0.8028488415d+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
113.55             !lower temperature limit [K]
600.0              !upper temperature limit [K]
0.0                !upper pressure limit [kPa]
0.0                !maximum density [mol/L]
1.0          8.31434                   !reducing parameters for T, Cp0
  7  1    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
  1.7027919006d+7      -3.00d0
 -4.7269724737d+5      -2.00d0
  4.7301406581d+3      -1.00d0
 -1.7231723278d+1       0.00d0
  5.8491344291d-2       1.00d0
  8.9440351886d-6       2.00d0
 -1.8274599197d-8       3.00d0
 -1.9283021962d+1    3000.d0


@EOS               !equation of state specification
FES  short Helmholtz equation for isobutane of state 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
113.55             !lower temperature limit [K]
600.0              !upper temperature limit [K]
100000.0           !upper pressure limit [kPa]
12.89              !maximum density [mol/L]
CPS                                    !pointer to Cp0 model
58.123                                 !molecular weight [g/mol]
113.55                                 !triple point temperature [K]
0.000020860                            !pressure at triple point [kPa]
12.784                                 !density at triple point [mol/L]
261.42                                 !normal boiling point temperature [K]
0.185                                  !acentric factor
407.817      3640.0       3.8600898    !Tc [K], pc [kPa], rhoc [mol/L]
407.817                   3.8600898    !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
 0.104293320000E+01  0.25    1.0     0 !a(i),t(i),d(i),l(i)
-0.281842730000E+01  1.125   1.0     0
 0.861762320000E+00  1.5     1.0     0
-0.106136190000E+00  1.375   2.0     0
 0.986157490000E-01  0.25    3.0     0
 0.239482090000E-03  0.875   7.0     0
 0.303300050000E+00  0.625   2.0     1
-0.415981560000E-01  1.75    5.0     1
-0.299919370000E+00  3.625   1.0     2
-0.803693430000E-01  3.625   4.0     2
-0.297613730000E-01 14.5     3.0     3
 0.130596300000E-01 12.0     4.0     3


#AUX               !auxiliary model specification
CPS  ideal gas heat capacity function