RC318 !short name (same as file name) 115-25-3 !CAS number octafluorocyclobutane FC-C318 !synonym1 RC-318 !synonym2 200.0312 !molecular weight [g/mol] 233.35 !triple pt 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 6.001 !version number ! compiled by Mark 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 #EOS !equation of state specification FEQ fundamental (Helmholtz) equation of state; Platzer et al. (1990). ?LITERATURE REFERENCE \ ?B. Platzer, A. Polt, and G. Maurer. Thermophysical properties of refrigerants. ? Berlin: Springer-Verlag (1990).\ ?\ !end of info section 233.35 !lower temperature limit [K] 623.23 !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 !Nterm, Ncoeff per term -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 polynomial fit for ideal gas heat capacity ?LITERATURE REFERENCE \ ?B. Platzer, A. Polt, and G. Maurer. Thermophysical properties of refrigerants. ? Berlin: Springer-Verlag (1990).\ ?\ !end of info section 233.35 !lower temperature limit [K] 623.23 !upper temperature limit [K] 0.0 !upper pressure limit [kPa] 0.0 !maximum density [mol/L] 1.000 200.04 !reducing parameters for T, Cp0 4 0 !Nterms: polynonial, exponential 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 for transport props (R134a reference). ?LITERATURE REFERENCES \ ?Klein, S.A., McLinden, M.O. and Laesecke, A. (1997). An improved extended ? corresponding states method for estimation of viscosity of pure refrigerants ? and mixtures. Int. J. Refrigeration 20: 208-217. \ ?\ ?Huber, M.L., Friend, D.G. and Ely, J.F. Prediction of the thermal ? conductivity of refrigerants and refrigerant mixtures. ? Fluid Phase Equilibria 80: 249-261 (1992). \ ?\ ?No experimental transport data are available for this fluid. The values ? calculated with the ECS method are thus predictive and will have greater ? uncertainties.\ ?\ ?The Lennard-Jones parameters are estimated.\ ? !end of info section 233. !lower temperature limit [K] 500.00 !upper temperature limit [K] 40000.0 !upper pressure limit [kPa] 9.20 !maximum density [mol/L] (limit of ECS-thermo fit) FEQ R134a.fld VS1 !model for reference fluid viscosity TC1 !model for reference fluid thermal conductivity 0 !Lennard-Jones flag (0 or 1) (0 => use estimates) 0.00000 !Lennard-Jones coefficient Sigma [nm] 000.00 !L-J coefficient epsilon/kB [K] 1 0 0 !number of terms in f_int term in Eucken correlation, spare1, spare 2 1.3200d-3 0.0 0.0 0.0 !coeff, power of T, spare 1, spare 2 0 0 0 !number of terms in psi (visc shape factor): poly,spare1,spare2 0 0 0 !number of terms in chi (t.c. shape factor): poly,spare1,spare2 #STN !surface tension specification ST1 surface tension model ?LITERATURE REFERENCE \ ?fit to data of: \ ?Calado, J.C.G., McLure, I.A. and Soares, V.A.M. (1978). 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.\ ?\ !end info 233.00 !lower temperature limit [K] 388.38 !upper temperature limit [K] 0.00 !(dummy) upper pressure limit 0.00 !(dummy) maximum density 1 !number of terms 388.37d0 !critical temperature used in fit (dummy) 0.05145d0 1.26d0 !sigma0 and n @END c 1 2 3 4 5 6 7 8 c2345678901234567890123456789012345678901234567890123456789012345678901234567890