rc318.fld

一个关于物性计算的软件

RC318                                 !short name
115-25-3                              !CAS number
octafluorocyclobutane                 !full name
cyclo-C4F8                            !chemical formula
FC-C318                               !synonym
200.0312           !molecular weight [g/mol]
233.35             !triple point temperature [K]
267.175            !normal boiling point [K]
388.38             !critical temperature [K]
2777.5             !critical pressure [kPa]
3.09938            !critical density [mol/L]
0.3553             !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
! 05-29-97  MM, original version
! 07-02-97 EWL, add Bender EOS from Platzer
! 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
! 05-03-02 MLH, added fits for thermal conductivity and viscosity.


#EOS               !equation of state specification
FEQ  Helmholtz equation of state for R-C318 of Platzer et al. (1990).
?LITERATURE REFERENCE \
?Platzer, B., Polt, A., and Maurer, G.,
? "Thermophysical properties of refrigerants,"
? Berlin:  Springer-Verlag, 1990.\
?\
!end of info section
233.35             !lower temperature limit [K]
623.0              !upper temperature limit [K]
60000.0            !upper pressure limit [kPa]
8.6452             !maximum density [mol/L]
CPP                                    !pointer to Cp0 model
200.04                                 !molecular weight [g/mol]
233.35                                 !triple point temperature [K]
19.461                                 !pressure at triple point [kPa]
8.6452                                 !density at triple point [mol/L]
267.175                                !normal boiling point temperature [K]
0.3553                                 !acentric factor
388.38       2777.5       3.09938      !Tc [K], pc [kPa], rhoc [mol/L]
388.38                    3.09938      !reducing parameters [K, mol/L]
8.31451                                !gas constant [J/mol-K]
      22  5      0  0       0  0       !# terms, # coeff/term for:  "normal" terms, critical, spare
-0.104729119796d+1  3.000   0.00    0   0.0 !a(i),t(i),d(i),l(i),g(i)
 0.138034128822d+1  4.000   0.00    0   0.0
-0.333625769594d+0  5.000   0.00    0   0.0
 0.109415569278d+1  0.000   1.00    0   0.0
-0.268265237178d+1  1.000   1.00    0   0.0
 0.173403063905d+1  2.000   1.00    0   0.0
-0.163611246876d+1  3.000   1.00    0   0.0
 0.304834499143d+0  4.000   1.00    0   0.0
 0.102771551787d+0  0.000   2.00    0   0.0
-0.232367895587d-1  1.000   2.00    0   0.0
 0.166151957803d+0  2.000   2.00    0   0.0
-0.250103914479d-1  0.000   3.00    0   0.0
 0.935680977639d-1  1.000   3.00    0   0.0
 0.431929127445d-1  0.000   4.00    0   0.0
-0.133439845861d+0  1.000   4.00    0   0.0
 0.255416632165d-1  1.000   5.00    0   0.0
 0.104729119796d+1  3.000   0.00    2   0.99943992d0
-0.138034128822d+1  4.000   0.00    2   0.99943992d0
 0.333625769594d+0  5.000   0.00    2   0.99943992d0
-0.510485781618d+0  3.000   2.00    2   0.99943992d0
 0.181840728111d+1  4.000   2.00    2   0.99943992d0
-0.138530893970d+1  5.000   2.00    2   0.99943992d0


#AUX               !auxiliary model specification
CPP  ideal gas heat capacity function
?LITERATURE REFERENCE \
?Platzer, B., Polt, A., and Maurer, G.,
? "Thermophysical properties of refrigerants,"
? Berlin:  Springer-Verlag, 1990.\
?\
!end of info section
233.35             !lower temperature limit [K]
623.0              !upper temperature limit [K]
0.0                !upper pressure limit [kPa]
0.0                !maximum density [mol/L]
1.0          200.04                    !reducing parameters for T, Cp0
  4  0    0  0    0  0  0              !Nterms:  polynomial, exponential, cosh, sinh
 0.12100000d+0    0.0
 0.29030000d-2    1.0
-0.25327000d-5    2.0
 0.77191000d-9    3.0


#TRN               !transport model specification
ECS  Extended Corresponding States model (propane reference); fitted to data.
?LITERATURE REFERENCES \
?Klein, S.A., McLinden, M.O., and Laesecke, A.,
? "An improved extended corresponding states method for estimation of
? viscosity of pure refrigerants and mixtures,"
? Int. J. Refrigeration, 20:208-217, 1997.
?\
?McLinden, M.O., Klein, S.A., and Perkins, R.A.,
? "An extended corresponding states model for the thermal conductivity
? of refrigerants and refrigerant mixtures,"
? Int. J. Refrigeration, 23:43-63, 2000.
?
?DATA SOURCES FOR THERMAL CONDUCTIVITY\
?The ECS parameters for thermal conductivity were based on the data of:\
?\
?
?Perkins, R., Cusco, L., Howley, J., Laesecke, A., Matthes, S. and
? Ramires, M.L.V. (2001)."Thermal conductivities of alternatives to CFC-11 for
? foam insulation". J. Chem. Eng. Data, 46(2):428-432.
?
?Tsvetkov, O. B., Laptev, Yu. A., and Vasilkov, A. I.,"The Results of Measurements of
? Thermal Conductivity of Gaseous Freons with the Heating Wire Method",(1977).
? Mashinyi i Apparatyi Cholodilnoj, Kriogennoh Techniki i  Kondizionirovaniyi
? Vosducha, Collect No. 2, 54-6, Leningradskij Tech. Inst.
?
?Kessel'man, P. M.,Porichanskii, E. G., Romanov, V. K., Ponomareva, O. P.,
? Svetlichnyi, P. I.,Zheleznyi, V. P., Slyusarev, V. V., and Karbanov, E. M.(1977).
? "Complex study of the thermophysical properties of freon c-318",Teplofiz.
? Svoistva Veshchestv Mater.,No. 11, 4-10.
?
?Vojtenko, A. K. (1980)."Investigation of the Thermal Conductivity of some Freons
? in the Wide Range of Parameters Including the Critical Region",Ph. D. Thesis,
? Groz. Neft. Inst., Grozny, USSR.
?
?Average absolute deviations of the fit from the experimental data were:\
?  Perkins: 2.89%; Tsvetkov:  8.14%; Kessel'man: 2.23%; Vojtenko: 4.80%;
?  Overall:  3.68%\
?\
?DATA SOURCES FOR VISCOSITY\
?The ECS parameters for viscosity were based on the data of:\
?\
?Geller, V. Z., Karabanov, E. M., Gunchuk, B. V., Zakharzhevskiy, V. Y.,
? and Lapardin, N. I.,(1976) "The Investigation of the Viscosity Coefficient of Some
? of the Liquid Gases About the Saturated Line", Gasovaya Promyishlennost,No. 3,32.
?
?Karbanov, E. M. (1978)."Investigation of the Dynamic Viscosity of Some Freons of
? Ethane Type and of the Bromide Freons", Ph.D. Thesis, Groz. Neft. Inst., Grozny, USSR.
?
?Kessel'man, P. M., Porichanskii, E. G., Romanov, V. K.; Ponomareva, O. P.,
? Svetlichnyi, P. I.,Zheleznyi, V. P., Slyusarev, V. V., and Karbanov, E. M. (1977).
? "Complex study of the thermophysical properties of freon c-318",Teplofiz.
? Svoistva Veshchestv Mater.,No. 11, 4-10.
?
?Kamien, C.Z., and Witzell, O.W. (1959). "Effect of pressure and temperature on
? the viscosity of refrigerants in the vapor phase", ASHRAE Trans. 65, 663-674.
?
?Average absolute deviations of the fit from the experimental data were:\
?   Geller:  3.88%; Karbanov: 1.99%; Kessel'man: 4.06%; Kamien: 2.81%;
?   Overall: 3.49%\
?\
?The Lennard-Jones parameters are estimated.\
?
!end of info section
233.35             !lower temperature limit [K]
623.0              !upper temperature limit [K]
60000.0            !upper pressure limit [kPa]
8.6452             !maximum density [mol/L]
FEQ propane.fld
VS1                !model for reference fluid viscosity
TC1                !model for reference fluid thermal conductivity
1                  !Lennard-Jones flag (0 or 1) (0 => use estimates)
0.5947             !Lennard-Jones coefficient sigma [nm] for ECS method
299.76             !Lennard-Jones coefficient epsilon/kappa [K] for ECS method
2  0  0                        !number of terms in f_int term in Eucken correlation, spare1, spare2
 1.35697d-03 0.0   0.0   0.0   !coeff, power of T, spare 1, spare 2
-1.11635d-07 1.0   0.0   0.0   !coeff, power of T, spare 1, spare 2
2  0  0                        !number of terms in psi (visc shape factor): poly,spare1,spare2
 1.21141d+0   0.0   0.0   0.0  !coeff, power of Tr, power of Dr, spare
-3.37573d-02  0.0   1.0   0.0  !coeff, power of Tr, power of Dr, spare
2  0  0                        !number of terms in chi (t.c. shape factor): poly,spare1,spare2
0.151745d+01   0.0   0.0   0.0 !coeff, power of Tr, power of Dr, spare
-0.144756d+00  0.0   1.0   0.0 !coeff, power of Tr, power of Dr, spare
TK6                            !pointer to critical enhancement auxiliary function


#AUX               !thermal conductivity critical enhancement model
TK6  simplified thermal conductivity critical enhancement of Olchowy and Sengers
?LITERATURE REFERENCE \
?Olchowy, G.A. and Sengers, J.V.,
? "A simplified representation for the thermal conductivity of fluids in the
? critical region,"
? Int. J. Thermophysics, 10:417-426, 1989.
?\
?as applied to CO2 by:
?\
?Vesovic, V., Wakeham, W.A., Olchowy, G.A., Sengers, J.V., Watson, J.T.R.
? and Millat, J.,
? "The transport properties of carbon dioxide,"
? J. Phys. Chem. Ref. Data, 19:763-808, 1990.
?\
!end of info section
233.35             !lower temperature limit [K]
500.0              !upper temperature limit [K]
40000.0            !upper pressure limit [kPa]
9.20               !maximum density [mol/L] (limit of ECS-thermo fit)
9  0  0  0         !# terms:  CO2-terms, spare, spare, spare
1.0     1.0     1.0      !reducing par for T, rho, tcx (mW/m-K)
 0.630d+00         !gnu (universal exponent)
 1.239d+00         !gamma (universal exponent)
 1.03d+00          !R0 (universal amplitude)
 0.063d+00         !z (universal exponent--not used for t.c., only viscosity)
 1.00d+00          !c (constant in viscosity eqn = 1/[2 - (alpha + gamma)/(2*nu)], but often set to 1)
 1.94d-10          !xi0 (amplitude) [m]
 0.0496d+00        !gam0 (amplitude) [-]
 0.37204d-09       !qd_inverse (modified effective cutoff parameter) [m] fit to data
 582.57d+00        !tref (reference temperature)=1.5*Tc [K]


#STN        !surface tension specification
ST1  surface tension model; fit of data from Calado et al. (1978).
?LITERATURE REFERENCE \
?fit to data of: \
?Calado, J.C.G., McLure, I.A., and Soares, V.A.M.,
? "Surface tension for octafluorocyclobutane, n-butane and their mixtures
? from 233 K to 254 K, and vapour pressure, excess gibbs function and excess
? volume for the mixture at 233 K,"
? Fluid Phase Equilibria, 2:199-213, 1978.
?\
!end of info section
233.0              !lower temperature limit [K]
388.38             !upper temperature limit [K]
0.0                !(dummy) upper pressure limit
0.0                !(dummy) maximum density
1                           !number of terms in surface tension model
388.37                      !critical temperature used in fit (dummy)
 0.05145     1.26           !sigma0 and n


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