isobutan.fld

一个关于物性计算的软件

?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
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          8.31451                   !reducing parameters for T, Cp0
  1  0    2  2    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
    0.4067140E+01   0.0
    0.2059196E+06  -2.0  0.1980180E+03  -1.0  -2.0
    0.1289193E+08  -2.0  0.8937650E+03  -1.0  -2.0
    0.1724067E+07  -2.0  0.4382700E+03  -1.0  -2.0
    0.9124395E+08  -2.0  0.1905020E+04  -1.0  -2.0


@EOS               !equation of state specification
FE2  Helmholtz equation of state for isobutane of Polt et al. (1992).
?LITERATURE REFERENCE \
?Polt, A., Platzer, B., and Maurer, G.,
? "Parameter der thermischen Zustandsgleichung von Bender fuer 14
? mehratomige reine Stoffe,"
? Chem. Tech. (Leipzig), 44(6):216-224, 1992.
?\
!end of info section
120.0              !lower temperature limit [K]
498.0              !upper temperature limit [K]
35000.0            !upper pressure limit [kPa]
12.89              !maximum density [mol/L]
CP2                                    !pointer to Cp0 model
58.124                                 !molecular weight [g/mol]
120.0                                  !triple point temperature [K]
0.46491d-4                             !pressure at triple point [kPa]
12.649                                 !density at triple point [mol/L]
261.51                                 !normal boiling point temperature [K]
0.1851                                 !acentric factor
407.85       3640.0       3.8607116    !Tc [K], pc [kPa], rhoc [mol/L]
407.85                    3.8607116    !reducing parameters [K, mol/L]
8.3143                                 !gas constant [J/mol-K]
      22  5      0  0       0  0       !# terms, # coeff/term for:  "normal" terms, critical, spare
-0.958589873652d+0  3.0     0.0     0  0.0            !a(i),t(i),d(i),l(i)
 0.818846326211d+0  4.0     0.0     0  0.0
-0.115814967179d+0  5.0     0.0     0  0.0
 0.345513148715d+0  0.0     1.0     0  0.0
-0.168751721524d+1  1.0     1.0     0  0.0
 0.936693300209d+0  2.0     1.0     0  0.0
-0.106644545724d+1  3.0     1.0     0  0.0
 0.980958295776d-1  4.0     1.0     0  0.0
 0.495941129005d+0  0.0     2.0     0  0.0
-0.261313404262d+0  1.0     2.0     0  0.0
 0.485109471188d+0  2.0     2.0     0  0.0
-0.177275820736d+0  0.0     3.0     0  0.0
-0.209415485311d-1  1.0     3.0     0  0.0
 0.788178884079d-1  0.0     4.0     0  0.0
-0.102751671767d+0  1.0     4.0     0  0.0
 0.178645875838d-1  1.0     5.0     0  0.0
 0.958589873652d+0  3.0     0.0     2  1.0071072
-0.818846326211d+0  4.0     0.0     2  1.0071072
 0.115814967179d+0  5.0     0.0     2  1.0071072
 0.537585249054d+0  3.0     2.0     2  1.0071072
-0.719424468790d+0  4.0     2.0     2  1.0071072
 0.245830118086d+0  5.0     2.0     2  1.0071072


#AUX               !auxiliary model specification
CP2  ideal gas heat capacity function
?LITERATURE REFERENCE \
?Polt, A., Platzer, B., and Maurer, G.,
? "Parameter der thermischen Zustandsgleichung von Bender fuer 14
? mehratomige reine Stoffe,"
? Chem. Tech. (Leipzig), 44(6):216-224, 1992.
?\
!end of info section
120.0              !lower temperature limit [K]
498.0              !upper temperature limit [K]
0.0                !upper pressure limit [kPa]
0.0                !maximum density [mol/L]
1.0          58.124                    !reducing parameters for T, Cp0
  5  0    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
 0.397893d+00    0.00
 0.412501d-02    1.00
-0.196195d-06    2.00
 0.380185d-08    3.00
-0.523950d-11    4.00


#TCX               !thermal conductivity model specification
TC1  pure fluid thermal conductivity model of Perkins (2001).
?LITERATURE REFERENCE \
?Perkins, R.A.,
? "Measurement and Correlation of the Thermal Conductivity of Isobutane
? from 114 K to 600 K at Pressures to 70 MPa,"
? for submission to J. Chem. Eng. Data, 2001.
?\
?Uncertainty in thermal conductivity is 3%, except in the critical region
? and dilute gas which have an uncertainty of 5%.
?\
!end of info section
113.55              !lower temperature limit [K]
600.0              !upper temperature limit [K]
70000.0            !upper pressure limit [kPa]
13.00              !maximum density [mol/L]
3   0              !# terms for dilute gas function:  numerator, denominator
407.85  1.0        !reducing parameters for T, tcx
-2.37901d-3    0.00d0   !coeff, power in T
 1.06601d-2    1.00d0
 2.15811d-2    2.00d0
10  0              !# terms for background gas function:  numerator, denominator
407.85  3.86  1.0                          !reducing par for T, rho, tcx
-4.11789d-2    0.00d0   1.00d0   0.00d0   !coeff, powers of t, rho, spare for future use
 4.76346d-2    1.00d0   1.00d0   0.00d0
 1.46805d-1    0.00d0   2.00d0   0.00d0
-1.28445d-1    1.00d0   2.00d0   0.00d0
-1.19190d-1    0.00d0   3.00d0   0.00d0
 1.07565d-1    1.00d0   3.00d0   0.00d0
 4.10226d-2    0.00d0   4.00d0   0.00d0
-3.85968d-2    1.00d0   4.00d0   0.00d0
-4.88704d-3    0.00d0   5.00d0   0.00d0
 5.20901d-3    1.00d0   5.00d0   0.00d0
TK3                !pointer to critical enhancement auxiliary function


#AUX               !thermal conductivity critical enhancement model
TK3  thermal conductivity critical enhancement of Perkins (2001).
?LITERATURE REFERENCE \
?Perkins, R.A.,
? "Measurement and Correlation of the Thermal Conductivity of Isobutane
? from 114 K to 600 K at Pressures to 70 MPa,"
? for submission to J. Chem. Eng. Data, 2001.
?\
!end of info section
113.55              !lower temperature limit [K]
600.0              !upper temperature limit [K]
70000.0            !upper pressure limit [kPa]
13.00              !maximum density [mol/L]
9  0  0  0         !# terms:  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) [-]
0.657661d-9        !qd_inverse (modified effective cutoff parameter) [m]
611.73             !tref (reference temperature) [K]


@TCX               !thermal conductivity model specification
TC2  pure fluid thermal conductivity 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 thermal conductivity 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-01  !const in Eq 19 = 5/16*(k*MW/1000/pi/Na)**0.5*1.0d12
 0.1449797353d+01  !dilute gas terms (Eq 27):  Gt(1)
-0.1685643887d+00  !                           Gt(2)
 0.4307008989d-02  !residual terms (Eqs 26, 28-30): Et(1)
-0.1509010974d+01
 0.4693712392d+03
-0.3554280979d-03
 0.1841552874d+00
-0.3892338766d+02
-0.9354624917d-01
 0.7114330590d+01  !Et(8)
TK2                !pointer to critical enhancement model (follows immediately)
 0.0034718d0       !critical enhancement terms (Eqs D1-D4):  X1
10.1207d0
 0.466392d0
 1.00344d0         !X4
 9.10218d-10       !Z
 1.38054d-23       !Boltzmann's constant, k
 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)  (the viscosity is also used in conductivity correlation)
 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)


#ETA               !viscosity model specification
VS1  pure fluid viscosity 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.
?\
?The uncertainty in viscosity varies from 0.4% in the dilute gas between
?room temperature and 600 K, to 3.0% over the rest of the fluid surface.
?\
!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]
1                  !number of terms associated with dilute-gas function
CI1                !pointer to reduced effective collision cross-section model
0.46445            !Lennard-Jones coefficient sigma [nm]
307.55             !Lennard-Jones coefficient epsilon/kappa [K]
1.0    1.0         !reducing parameters for T, eta
0.1628213  0.50d0  !Chapman-Enskog term
9                  !number of terms for initial density dependence
 307.55       0.0603345    !reducing parameters for T (= eps/k), etaB2 (= 0.6022137*sigma**3)
-19.572881d0       0.0     !coeff, power in T* = T/(eps/k)
 219.73999d0      -0.25
-1015.3226d0      -0.5
 2471.01251d0     -0.75
-3375.1717d0      -1.0
 2491.6597d0      -1.25
-787.26086d0      -1.5
 14.085455d0      -2.5
-0.34664158d0     -5.5
2 13 1 2 0 0       !# resid terms:  close-packed density;  simple poly; numerator of rational poly; denominator of rat. poly; numerator of exponential; denominator of exponential
407.817    3.86       1.0           !reducing parameters for T, rho, eta
 0.233859774637D1   0.0    0.00  0.00  0
 0.235255150838D1   0.5    0.00  0.00  0
 0.103511763411D3   0.0    2.00  0.00  0
-0.312670896234D3  -1.0    2.00  0.00  0
 0.145253750239D3  -2.0    2.00  0.00  0
-0.210649894193D3   0.0    3.00  0.00  0
 0.386269696509D3  -1.0    3.00  0.00  0
-0.214963015527D3  -2.0    3.00  0.00  0
 0.112580360920D3   0.0    4.00  0.00  0
-0.223242033154D3  -1.0    4.00  0.00  0
 0.119114788598D3  -2.0    4.00  0.00  0
-0.181909745900D2   0.0    5.00  0.00  0
 0.360438957232D2  -1.0    5.00  0.00  0
-0.213960184050D2  -2.0    5.00  0.00  0
-0.194037606990D4   0.0    1.00 -1.00  0
 0.194037606990D4   0.0    1.00  0.00  0