📄 co2.fld
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carbon dioxide !short name
124-38-9 !CAS number
carbon dioxide !full name
CO2 !chemical formula
R-744 !synonym
44.0098 !molecular weight [g/mol]
216.592 !triple point temperature [K]
194.75 !normal boiling point [K]
304.1282 !critical temperature [K]
7377.3 !critical pressure [kPa]
10.6249 !critical density [mol/L]
0.22394 !acentric factor
0.0 !dipole moment [Debye]
IIR !default reference state
6.1 !version number
! compiled by M. McLinden, NIST Physical and Chemical Properties Division, Boulder, Colorado
! 06-07-96 MM, original version
! 09-06-96 MM, add surface tension fit of Rathjen and Straub
! 10-09-96 MM, replace temporary Cp0 fit with function of Ely et al.
! 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
! 06-08-97 MM, add transport formulation of Vesovic (1990).
! 07-11-97 MM, revert to ECS transport until Vesovic model fully implemented
! 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
! 07-27-98 EWL, add Span equation of state
! 11-13-98 EWL, update format to version 6.1
! 11-17-98 MM, incorrect coeff in TCX dilute gas: 7.537..d0, not 7.737..d1
! 12-04-98 MM, add fit of thermal conductivity shape factor in ECS method
! 03-09-99 EWL, add CO2 viscosity equation of Fenghour et al. (1998)
! 11-01-99 EWL, add Span 12 term short equation of state
! 01-25-00 EWL, changed the limits of the TCX eq. to match the EOS. Before,
! there was a jump as the program switched from Vesovic to ECS.
! The Vesovic equation extrapolates well outside its boundaries.
! 3-20-00 EWL, change max density to the density at p=2*pmax along melting line
#EOS !equation of state specification
FEQ Helmholtz equation of state for carbon dioxide of Span and Wagner (1996).
?LITERATURE REFERENCE \
?Span, R. and Wagner, W.,
? "A New Equation of State for Carbon Dioxide Covering the Fluid Region
? from the Triple-Point Temperature to 1100 K at Pressures up to 800 MPa,"
? J. Phys. Chem. Ref. Data, 25(6):1509-1596, 1996.
?\
?At pressures up to 30 MPa and temperatures up to 523 K, the estimated
?uncertainty ranges from 0.03% to 0.05% in density, 0.03% (in the vapor)
?to 1% in the speed of sound (0.5% in the liquid) and 0.15% (in the
?vapor) to 1.5% (in the liquid) in heat capacity. Special interest has
?been focused on the description of the critical region and the
?extrapolation behavior of the formulation (to the limits of chemical
?stability).
?\
!end of info section
216.592 !lower temperature limit [K]
1100.0 !upper temperature limit [K]
800000.0 !upper pressure limit [kPa]
37.24 !maximum density [mol/L]
CPP !pointer to Cp0 model
44.0098 !molecular weight [g/mol]
216.592 !triple point temperature [K]
517.95 !pressure at triple point [kPa]
26.777 !density at triple point [mol/L]
194.75 !normal boiling point temperature [K]
0.22394 !acentric factor
304.1282 7377.3 10.6249063 !Tc [K], pc [kPa], rhoc [mol/L]
304.1282 10.6249063 !reducing parameters [K, mol/L]
8.31451 !gas constant [J/mol-K]
34 4 8 12 0 0 !# terms, # coeff/term for: "normal" terms, critical, spare
0.388568232032d+00 0.000 1.00 0 !a(i),t(i),d(i),l(i)
0.293854759427d+01 0.750 1.00 0
-0.558671885349d+01 1.000 1.00 0
-0.767531995925d+00 2.000 1.00 0
0.317290055804d+00 0.750 2.00 0
0.548033158978d+00 2.000 2.00 0
0.122794112203d+00 0.750 3.00 0
0.216589615432d+01 1.500 1.00 1
0.158417351097d+01 1.500 2.00 1
-0.231327054055d+00 2.500 4.00 1
0.581169164314d-01 0.000 5.00 1
-0.553691372054d+00 1.500 5.00 1
0.489466159094d+00 2.000 5.00 1
-0.242757398435d-01 0.000 6.00 1
0.624947905017d-01 1.000 6.00 1
-0.121758602252d+00 2.000 6.00 1
-0.370556852701d+00 3.000 1.00 2
-0.167758797004d-01 6.000 1.00 2
-0.119607366380d+00 3.000 4.00 2
-0.456193625088d-01 6.000 4.00 2
0.356127892703d-01 8.000 4.00 2
-0.744277271321d-02 6.000 7.00 2
-0.173957049024d-02 0.000 8.00 2
-0.218101212895d-01 7.000 2.00 3
0.243321665592d-01 12.000 3.00 3
-0.374401334235d-01 16.000 3.00 3
0.143387157569d+00 22.000 5.00 4
-0.134919690833d+00 24.000 5.00 4
-0.231512250535d-01 16.000 6.00 4
0.123631254929d-01 24.000 7.00 4
0.210583219729d-02 8.000 8.00 4
-0.339585190264d-03 2.000 10.00 4
0.559936517716d-02 28.000 4.00 5
-0.303351180556d-03 14.000 8.00 6
-0.213654886883d+03 1.000 2.00 2 2 -25. -325. 1.16 1. 0. 0. 0.
0.266415691493d+05 0.000 2.00 2 2 -25. -300. 1.19 1. 0. 0. 0.
-0.240272122046d+05 1.000 2.00 2 2 -25. -300. 1.19 1. 0. 0. 0.
-0.283416034240d+03 3.000 3.00 2 2 -15. -275. 1.25 1. 0. 0. 0.
0.212472844002d+03 3.000 3.00 2 2 -20. -275. 1.22 1. 0. 0. 0.
-0.666422765408d+00 0.000 1.00 2 2 0.875 0.300 0.70 10.0 275. 0.3 3.5
0.726086323499d+00 0.000 1.00 2 2 0.925 0.300 0.70 10.0 275. 0.3 3.5
0.550686686128d-01 0.000 1.00 2 2 0.875 0.300 0.70 12.5 275. 1.0 3.
#AUX !auxiliary model specification
CPP ideal gas heat capacity function
?LITERATURE REFERENCE \
?Span, R. and Wagner, W.,
? "A New Equation of State for Carbon Dioxide Covering the Fluid Region
? from the Triple-Point Temperature to 1100 K at Pressures up to 800 MPa,"
? J. Phys. Chem. Ref. Data, 25(6):1509-1596, 1996.
?\
!end of info section
216.592 !lower temperature limit [K]
1100.0 !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 5 0 0 0 0 0 !Nterms: polynomial, exponential, cosh, sinh
0.35000000d+01 0.00
1.99427042 958.49956
0.621052475 1858.80115
0.411952928 2061.10114
1.04028922 3443.89908
0.0832767753 8238.20035
@EOS !equation of state specification
BWR MBWR equation of state for carbon dioxide of Ely et al. (1987).
?LITERATURE REFERENCE \
?Ely, J.F., Magee, J.W., and Haynes, W.M.,
? "Thermophysical properties for special high CO2 content mixtures,"
? Research Report RR-110, Gas Processors Association, Tulsa, OK, 1987.
?\
?Note: This report contains both MBWR and FEQ (referred to as the Schmidt-Wagner
? equation of state in the report) equations. The FEQ (Schmidt-Wagner) will
? give slightly better numbers very close to the critical point but for most
? calculations, the MBWR is the recommended equation.
?\
!end of info section
216.58 !lower temperature limit [K]
440.1 !upper temperature limit [K]
40000.0 !upper pressure limit [kPa]
27.778 !maximum density [mol/L]
CP1 !pointer to Cp0 model
44.0098 !molecular weight [g/mol]
216.58 !triple point temperature [K]
518.2 !pressure at triple point [kPa]
26.778 !density at triple point [mol/L]
194.75 !normal boiling point temperature [K]
0.22394 !acentric factor
304.21 7384.325 10.60 !Tc [K], pc [kPa], rhoc [mol/L]
304.21 10.60 !reducing parameters [K, mol/L]
10.60 !gamma
0.0831434 !gas constant [L-bar/mol-K]
32 1 !Nterm, Ncoeff per term
-0.981851065838d-02 0.995062267309d+00 -0.228380160313d+02
0.281827634529d+04 -0.347001262699d+06 0.394706709102d-03
-0.325550000110d+00 0.484320083063d+01 -0.352181542995d+06
-0.324053603343d-04 0.468596684665d-01 -0.754547012075d+01
-0.381894354016d-04 -0.442192933859d-01 0.516925168095d+02
0.212450985237d-02 -0.261009474785d-04 -0.888533388977d-01
0.155226179403d-02 0.415091004940d+06 -0.110173967489d+08
0.291990583344d+04 0.143254606508d+08 0.108574207533d+02
-0.247799657039d+03 0.199293590763d-01 0.102749908059d+03
0.377618865158d-04 -0.332276512346d-02 0.179196707121d-07
0.945076627807d-05 -0.123400943061d-02
@EOS !equation of state specification
FE1 Helmholtz equation of state for carbon dioxide of Ely et al. (1987).
?LITERATURE REFERENCE \
?Ely, J.F., Magee, J.W., and Haynes, W.M.,
? "Thermophysical properties for special high CO2 content mixtures,"
? Research Report RR-110, Gas Processors Association, Tulsa, OK, 1987.
?\
?Note: This report contains both MBWR and FEQ (referred to as the Schmidt-Wagner
? equation of state in the report) equations. The FEQ (Schmidt-Wagner) will
? give slightly better numbers very close to the critical point but for most
? calculations, the MBWR is the recommended equation.
?\
!end of info section
216.58 !lower temperature limit [K]
1000. !upper temperature limit [K]
100000.0 !upper pressure limit [kPa]
26.776 !maximum density [mol/L]
CP1 !pointer to Cp0 model
44.0098 !molecular weight [g/mol]
216.58 !triple point temperature [K]
518.03 !pressure at triple point [kPa]
26.776 !density at triple point [mol/L]
194.75 !normal boiling point temperature [K]
0.22394 !acentric factor
304.13 7375.21 10.63 !Tc [K], pc [kPa], rhoc [mol/L]
304.13 10.63 !reducing parameters [K, mol/L]
8.31434 !gas constant [J/mol-K]
32 4 0 0 0 0 !# terms, # coeff/term for: "normal" terms, critical, spare
0.485497428986d+00 0.000 1.00 0 !a(i),t(i),d(i),l(i)
-0.191900462349d+01 1.500 1.00 0
0.451739876847d+00 2.500 1.00 0
0.838475229022d-02 -0.500 2.00 0
0.310719428397d+00 1.500 2.00 0
-0.183619563850d+00 2.000 2.00 0
0.448878785519d-01 0.000 3.00 0
-0.362211893044d-01 1.000 3.00 0
-0.169827491865d-01 2.500 3.00 0
0.803504394396d-03 0.000 6.00 0
0.320223641512d-03 2.000 7.00 0
-0.658956249553d-05 5.000 7.00 0
-0.461991678692d-04 2.000 8.00 0
-0.385989029443d+00 5.000 1.00 2
0.131878614095d+00 6.000 1.00 2
0.109639470331d+00 3.500 2.00 2
-0.310044422115d-01 5.500 2.00 2
-0.989797992915d-01 3.000 3.00 2
-0.222934996927d-01 7.000 3.00 2
-0.225488505376d-01 6.000 5.00 2
-0.595661202393d-02 8.500 6.00 2
-0.219959964099d-01 4.000 7.00 2
0.140330955537d-01 6.500 8.00 2
-0.315424157971d-02 5.500 10.00 2
0.443394060420d-03 22.000 2.00 4
-0.487628903103d-02 11.000 3.00 4
-0.311643343682d-01 18.000 3.00 4
0.226083669848d-01 11.000 4.00 4
0.186651858191d-01 23.000 4.00 4
-0.399277963883d+00 17.000 5.00 4
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