nitrogen.fld

一个关于物性计算的软件

nitrogen           !short name
7727-37-9          !CAS number
nitrogen           !full name
N2                 !chemical formula
R-728              !synonym
28.01348           !molecular weight [g/mol]
63.151             !triple point temperature [K]
77.355             !normal boiling point [K]
126.192            !critical temperature [K]
3395.8             !critical pressure [kPa]
11.1839            !critical density [mol/L]
0.0372             !acentric factor
0.0                !dipole moment [Debye]
OTH                !default reference state
298.15  100.0 8663.72637570301 191.590039438828 !tref, Pref, Href, Sref
6.1                !version number

! compiled by M. McLinden, NIST Physical and Chemical Properties Division, Boulder, Colorado
! 11-04-96  MM, original version
! 01-30-97 EWL, revise surface tension fit to that of Lemmon and Penoncello
! 01-31-97  MM, change pointer for ECS reference viscosity from VS3 to VS1
!               modify ncoeff line for FEQ to accommodate critical region terms
! 02-20-97  MM, add default reference state
! 02-26-97  MM, add version number (future use)
! 03-11-97  MM, modify ECS-transport to new format
! 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
! 12-04-97 EWL, add Span equation of state
! 04-06-98 EWL, add power of tau in exponential part of critical region terms
! 06-24-98 EWL, add Younglove BWR equation
! 06-26-98 EWL, add Younglove transport equations
! 11-13-98 EWL, update format to version 6.1
!  1-07-99 EWL, change ECS reference fluid to nitrogen
!  9-27-99 EWL, update Span cp0 equation
! 10-27-99 EWL, add Span 12 term equation
! 11-09-99 EWL, add Lemmon and Jacobsen viscosity and t.c. equation
! 11-15-99 EWL, add sublimation line
! 11-15-99 EWL, change default reference state
!  3-20-00 EWL, change max density to the density at p=2*pmax along melting line
!  5-25-00 EWL, drop lower limit on transport eqs. to allow air calculations
!  2-26-01 EWL, chnaged h0 and s0 slightly


#EOS               !equation of state specification
FEQ  Helmholtz equation of state for nitrogen of Span et al. (2000).
?LITERATURE REFERENCE \
?Span, R., Lemmon, E.W., Jacobsen, R.T, Wagner, W., and Yokozeki, A.
? "A Reference Quality Thermodynamic Property Formulation for Nitrogen,"
? J. Phys. Chem. Ref. Data, 29(6):1361-1433, 2000.
? see also Int. J. Thermophys., 14(4):1121-1132, 1998.
?\
?The uncertainty in density of the equation of state is 0.02% from the
?triple point up to temperatures of 523 K and pressures up to 12 MPa and
?from temperatures of 240 to 523 K at pressures less than 30 MPa. In the
?range from 270 to 350 K at pressures less than 12 MPa, the uncertainty
?in density is 0.01%.  The uncertainty at very high pressures (>1 GPa) is
?0.6% in density.  The uncertainty in pressure in the critical region is
?estimated to be 0.02%.  In the gaseous and supercritical region, the
?speed of sound can be calculated with a typical uncertainty of 0.005% to
?0.1%.  At liquid states and at high pressures, the uncertainty increases
?to 0.5% - 1.5%.  For pressures up to 30 MPa, the estimated uncertainty
?for heat capacities ranges from 0.3% at gaseous and gas like supercritical
?states up to 0.8% at liquid states and at certain gaseous and supercritical
?states at low temperatures.  The uncertainty is 2% for pressures up to
?200 MPa and larger at higher pressures.  The estimated uncertainties of
?vapor pressure, saturated liquid density, and saturated vapor density
?are in general 0.02% for each property.  The formulation yields a
?reasonable extrapolation behavior up to the limits of chemical stability
?of nitrogen.
?\
!end of info section
63.151             !lower temperature limit [K]
2000.0             !upper temperature limit [K]
2200000.0          !upper pressure limit [kPa]
53.15              !maximum density [mol/L]
CPP                                    !pointer to Cp0 model
28.01348                               !molecular weight [g/mol]
63.151                                 !triple point temperature [K]
12.5198                                !pressure at triple point [kPa]
30.957                                 !density at triple point [mol/L]
77.3550                                !normal boiling point temperature [K]
0.0372                                 !acentric factor
126.192      3395.8       11.1839      !Tc [K], pc [kPa], rhoc [mol/L]
126.192                   11.1839      !reducing parameters [K, mol/L]
8.31451                                !gas constant [J/mol-K]
      32  4      4  12      0  0       !# terms, # coeff/term for:  "normal" terms, critical, spare
 0.924803575275d+00  0.250   1.00    0 !a(i),t(i),d(i),l(i)
-0.492448489428d+00  0.875   1.00    0
 0.661883336938d+00  0.500   2.00    0
-0.192902649201d+01  0.875   2.00    0
-0.622469309629d-01  0.375   3.00    0
 0.349943957581d+00  0.750   3.00    0
 0.564857472498d+00  0.500   1.00    1
-0.161720005987d+01  0.750   1.00    1
-0.481395031883d+00  2.000   1.00    1
 0.421150636384d+00  1.250   3.00    1
-0.161962230825d-01  3.500   3.00    1
 0.172100994165d+00  1.000   4.00    1
 0.735448924933d-02  0.500   6.00    1
 0.168077305479d-01  3.000   6.00    1
-0.107626664179d-02  0.000   7.00    1
-0.137318088513d-01  2.750   7.00    1
 0.635466899859d-03  0.750   8.00    1
 0.304432279419d-02  2.500   8.00    1
-0.435762336045d-01  4.000   1.00    2
-0.723174889316d-01  6.000   2.00    2
 0.389644315272d-01  6.000   3.00    2
-0.212201363910d-01  3.000   4.00    2
 0.408822981509d-02  3.000   5.00    2
-0.551990017984d-04  6.000   8.00    2
-0.462016716479d-01 16.000   4.00    3
-0.300311716011d-02 11.000   5.00    3
 0.368825891208d-01 15.000   5.00    3
-0.255856846220d-02 12.000   8.00    3
 0.896915264558d-02 12.000   3.00    4
-0.441513370350d-02  7.000   5.00    4
 0.133722924858d-02  4.000   6.00    4
 0.264832491957d-03 16.000   9.00    4
 0.196688194015d+02  0.000   1.00    2 2 -20.0  -325.0  1.16  1.  0.  0.  0.
-0.209115600730d+02  1.000   1.00    2 2 -20.0  -325.0  1.16  1.  0.  0.  0.
 0.167788306989d-01  2.000   3.00    2 2 -15.0  -300.0  1.13  1.  0.  0.  0.
 0.262767566274d+04  3.000   2.00    2 2 -25.0  -275.0  1.25  1.  0.  0.  0.


#AUX               !auxiliary model specification
CPP  ideal gas heat capacity function
?LITERATURE REFERENCE \
?Span, R., Lemmon, E.W., Jacobsen, R.T, Wagner, W., and Yokozeki, A.
? "A Reference Quality Thermodynamic Property Formulation for Nitrogen,"
? J. Phys. Chem. Ref. Data, 29(6):1361-1433, 2000.
? see also Int. J. Thermophys., 14(4):1121-1132, 1998.
?\
!end of info section
63.151             !lower temperature limit [K]
7000.0             !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
  4  1    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
 3.5               0.00
 3.066469d-6       1.00
 4.70124d-9        2.00
-3.987984d-13      3.00
 0.1012941d1      3364.011


@EOS               !equation of state specification
FE1  Helmholtz equation of state for nitrogen of Jacobsen et al. (1986).
?LITERATURE REFERENCE \
?Jacobsen, R.T, Stewart, R.B., and Jahangiri, M.,
? "Thermodynamic properties of nitrogen from the freezing line to 2000 K at
? pressures to 1000 MPa,"
? J. Phys. Chem. Ref. Data, 15(2):735-909, 1986.
?\
!end of info section
63.148             !lower temperature limit [K]
2000.0             !upper temperature limit [K]
1000000.0          !upper pressure limit [kPa]
30.96              !maximum density [mol/L]
CP1                                    !pointer to Cp0 model
28.0134                                !molecular weight [g/mol]
63.148                                 !triple point temperature [K]
12.52                                  !pressure at triple point [kPa]
31.046                                 !density at triple point [mol/L]
 77.348                                !normal boiling point temperature [K]
0.03701                                !acentric factor
126.193      3397.8       11.177       !Tc [K], pc [kPa], rhoc [mol/L]
126.193                   11.177       !reducing parameters [K, mol/L]
8.31434                                !gas constant [J/mol-K]
      28  4      0  0       0  0       !# terms, # coeff/term for:  "normal" terms, critical, spare
  0.949954182700d+00   0.250    1.0  0 !a(i),t(i),d(i),l(i)
  0.248171851300d+00   0.250    2.0  0
 -0.204628712200d+00   0.250    3.0  0
 -0.174842900800d+00   0.500    2.0  0
  0.638701714800d+00   0.500    3.0  0
 -0.527298616800d+00   0.750    3.0  0
 -0.204974150400d+01   1.000    1.0  0
  0.555138355300d-01   1.000    4.0  0
 -0.819110639600d-03   1.000    6.0  0
 -0.503251969900d-01   1.000    2.0  2
  0.265011079800d+00   1.500    1.0  0
  0.731145937200d-01   2.000    2.0  0
 -0.281308071800d-01   2.000    4.0  0
  0.165982356900d-02   2.000    6.0  0
  0.601281781200d-01   2.000    2.0  2
 -0.378544519400d+00   3.000    1.0  0
  0.189529043300d+00   3.000    2.0  0
 -0.700189509300d-02   3.000    4.0  0
 -0.492771092700d-01   3.000    1.0  3
  0.651201367900d-01   4.000    4.0  2
  0.113812194200d+00   4.000    1.0  3
 -0.955140963197d-01   5.000    2.0  2
  0.211835414000d-01   6.000    4.0  2
 -0.110072177100d-01   8.000    2.0  4
  0.128443221000d-01  14.000    4.0  4
 -0.105447491000d-01  18.000    4.0  4
 -0.148460053800d-03  20.000    2.0  4
 -0.580648346700d-02  22.000    3.0  3


#AUX               !auxiliary model specification
CP1  ideal gas heat capacity function of Jacobsen et al.
?LITERATURE REFERENCE \
?Jacobsen, R.T, Stewart, R.B., and Jahangiri, M.,
? "Thermodynamic properties of nitrogen from the freezing line to 2000 K at
? pressures to 1000 MPa,"
? J. Phys. Chem. Ref. Data, 15(2):735-909, 1986.
?\
!end of info section
63.148             !lower temperature limit [K]
2000.0             !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
-0.837079888737d+03      -3.00         !Ni, power in T
 0.379147114487d+02      -2.00
-0.601737844275d+00      -1.00
 0.350418363823d+01       0.00
-0.874955653028d-05       1.00
 0.148958507239d-07       2.00
-0.256370354277d-11       3.00
 0.100773735767d+01       0.33534061d4  !exponential term


@EOS               !equation of state specification
FES  short Helmholtz equation of state for nitrogen 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
63.151             !lower temperature limit [K]
600.0              !upper temperature limit [K]
100000.0           !upper pressure limit [kPa]
53.15              !maximum density [mol/L]
CPP                                    !pointer to Cp0 model
28.013                                 !molecular weight [g/mol]
63.151                                 !triple point temperature [K]
12.566                                 !pressure at triple point [kPa]
30.935                                 !density at triple point [mol/L]
77.356                                 !normal boiling point temperature [K]
0.037                                  !acentric factor
126.192      3396.0       11.1839      !Tc [K], pc [kPa], rhoc [mol/L]
126.192                   11.1839      !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
 0.922965670000E+00  0.25    1.0     0 !a(i),t(i),d(i),l(i)
-0.255750120000E+01  1.125   1.0     0
 0.644824630000E+00  1.5     1.0     0
 0.108310200000E-01  1.375   2.0     0
 0.739241670000E-01  0.25    3.0     0
 0.235329620000E-03  0.875   7.0     0
 0.180248540000E+00  0.625   2.0     1
-0.456602990000E-01  1.75    5.0     1
-0.155210600000E+00  3.625   1.0     2
-0.381114900000E-01  3.625   4.0     2