butane !short name (same as file name) 106-97-8 !CAS number butane R600 !synonym1 R-600 !synonym2 58.123 !molecular weight [g/mol] 134.86 !triple pt temperature [K] 272.613 !normal boiling pt [K] 425.16 !critical temperature [K] 3796. !critical pressure [kPa] 3.920 !critical density [mol/L] 0.19954 !acentric factor 0.00000 !dipole moment [debye] IIR !default reference state 6.001 !version number ! compiled by M. McLinden, NIST Thermophysics Division, Boulder, Colorado ! 02-01-96 MM, original version ! 03-18-96 MM, add transport correlations compiled by S.A. Klein ! 06-17-96 MM, add thermal conductivity coefficients fitted by S.A. Klein ! 07-08-96 MM, replace temporary Cp0 with function of Younglove & Ely ! 10-03-96 MM, add surface tension fit ! 10-17-96 MM, add thermal conductivity model of Younglove & Ely ! 10-18-96 MM, missing constant in dilute-gas viscosity model ! 02-20-97 MM, add default reference state ! 02-21-97 MM, put viscosity model into revised VS2 format ! 02-26-97 MM, add version number and pointer to visc critical enhancement (both future use) ! 03-06-97 MM, modify ECS-transport to new format ! 03-25-97 MM, set Psi,Chi coeff in ECS-transport to 1,0 pending refit of data ! 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 #EOS !equation of state specification BWR MBWR equation of state; Younglove & 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). \ ?\ ?N.B. all temperatures on IPTS-68\ ? !end of info section 134.86 !lower temperature limit [K] 500.0 !upper temperature limit [K] 70000.0 !upper pressure limit [kPa] 12.98 !maximum density [mol/L] (rho on melting line at 70 MPa) CPP !pointer to Cp0 model 58.123d0 !molecular weight [g/mol] 134.86d0 !triple point temperature [K] 6.736d-4 !pressure at triple point [kPa] 12.650d0 !density at triple point [mol/L] 272.613d0 !normal boiling point temp [K] 0.19954d0 !acentric factor 425.16d0 3796.d0 3.920d0 !Tc [K], pc [kPa], rhoc [mol/L] 425.16d0 3.920d0 !reducing parameters [K, mol/L] 3.920d0 !gamma 0.0831434d0 !gas constant [L-bar/mol-K] 32 1 !Nterm, Ncoeff per term 0.153740104603d-01 -0.160980034611d+00 -0.979782459010d+01 0.499660674504d+03 -0.102115607687d+07 0.236032147756d-02 -0.137475757093d+01 -0.907038733865d+03 0.385421748213d+06 -0.349453710700d-04 0.157361122714d+00 0.102301474068d+03 0.182335737331d-01 -0.404114307787d+01 0.187979855783d+01 0.362088795040d+00 -0.738762248266d-02 -0.218618590563d+01 0.118802729027d+00 0.706854198713d+06 -0.219469885796d+09 -0.182454361268d+05 0.206790377277d+10 0.111757550145d+03 0.558779925986d+05 -0.159579054026d+02 -0.148034214622d+07 -0.245206328201d+00 0.218305259309d+03 -0.923990627338d-04 -0.205267776639d+01 0.387639044820d+02 #AUX !auxiliary model specification CPP ideal gas heat capacity function of Younglove & Ely ?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). \ ? \ !end of info section 134.86 !lower temperature limit [K] 500.0 !upper temperature limit [K] 0.00 !upper pressure limit [kPa] 0.00 !maximum density [mol/L] 1.000 8.31434 !reducing parameters for T, Cp0 7 1 !Nterms: polynonial, exponential 3.8802310194d+5 -3.00d0 -1.5444296890d+5 -2.00d0 2.8455082239d+3 -1.00d0 -1.3491511376d+1 0.00d0 6.6142595353d-2 1.00d0 -2.4307965028d-5 2.00d0 1.5044248429d-10 3.00d0 -8.3933423467d+0 3000.d0 @TRN !transport model specification ECS Extended Corresponding States model for transport props (R134a ref. fluid). ?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). \ ?\ ?Thermal conductivity and viscosity data used in the development of the ?extended corresponding states correlations were taken from\ ?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 Lennard-Jones parameters are estimated ? !end of info section 134.86 !lower temperature limit [K] 500.0 !upper temperature limit [K] 70000.0 !upper pressure limit [kPa] 12.98 !maximum density [mol/L] (rho on melting line at 70 MPa) FEQ R134a.fld VS1 !model for reference fluid viscosity TC1 !model for reference fluid thermal conductivity 1 !Lennard-Jones flag (0 or 1) (0 => use estimates) 0.503103 !Lennard-Jones coefficient Sigma [nm] 440.00 !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 2 0 0 !number of terms in psi (visc shape factor): poly,spare1,spare2 0.801 0.0 0.0 0.0 !coeff, power of Tr, power of Dr, spare 0.0375 0.0 1.0 0.0 2 0 0 !number of terms in chi (t.c. shape factor): poly,spare1,spare2 1.12775 0.0 0.0 0.0 !coeff, power of Tr, power of Dr, spare -0.0354 0.0 1.0 0.0 #ETA !viscosity model specification VS2 pure fluid viscosity model of Younglove & 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). \ ? \ ?N.B. all temperatures on IPTS-68\ ? !end of info section 134.86 !lower temperature limit [K] 500.0 !upper temperature limit [K] 70000.0 !upper pressure limit [kPa] 12.98 !maximum density [mol/L] (rho on melting line at 70 MPa) CI2 !pointer to collision integral model 0.503103 !Lennard-Jones coefficient sigma [nm] 440. !Lennard-Jones coefficient epsilon/kB [K] 2.0352457000d-01 !const in Eq 19 = 5/16*(k*MW/1000/pi/Na)**0.5*1.0d12 0.1630521851d+01 !coeff for initial density dependence of viscosity (eq 21); Fv(1) 0.0 !Fv(2) 1.40 !Fv(3) 425.16 !Fv(4) -0.2724386845d+02 !coefficients for residual viscosity, eqs (22 - 25) 0.8012766611d+03 !Ev(2) 0.2503978646d+02 !Ev(3) -0.1309704275d+05 !Ev(4) -0.8313305258d-01 !Ev(5) 0.6636975027d+02 !Ev(6) 0.9849317662d+04 !Ev(7) NUL !pointer to critical enhancement auxiliary function (none used) #TCX !thermal conductivity model specification TC2 pure fluid thermal conductivity model of Younglove & 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). \ ? \ ?N.B. all temperatures on IPTS-68\ ? !end of info section 134.86 !lower temperature limit [K] 500.0 !upper temperature limit [K] 70000.0 !upper pressure limit [kPa] 12.98 !maximum density [mol/L] (rho on melting line at 70 MPa) CI2 !pointer to collision integral model 0.503103d0 !Lennard-Jones coefficient sigma [nm] 440.d0 !Lennard-Jones coefficient epsilon/kB [K] 2.0352526600d-01 !const in Eq 19 = 5/16*(k*MW/1000/pi/Na)**0.5*1.0d12 0.1530992335d+01 !dilute gas terms (Eq 27): Gt(1) -0.2114511021d+00 ! Gt(2) 0.4024170074d-02 !residual terms (Eqs 26, 28-30): Et(1) 0.1561435847d+01 -0.6004381127d+03 -0.7547260841d-03 -0.2069676662d-01 0.9382534978d+02 -0.1711371457d+00 0.3647724935d+02 ! Et(8) TK2 !pointer to critical enhancement model (follows immediately) 0.000769608d0 !critical enhancement terms (Eqs D1-D4): X1 13.2533d0 0.485554d0 1.01021d0 ! X4 9.10218d-10 !Z 1.38054d-23 !Boltzmann's constant, k 0.1630521851d+01 !coeff for initial density dependence of viscosity (eq 21); Fv(1) 0.0 !Fv(2) 1.40 !Fv(3) 425.16 !Fv(4) -0.2724386845d+02 !coefficients for residual viscosity, eqs (22 - 25) 0.8012766611d+03 !Ev(2) (the viscosity is also used in conductivity correlation) 0.2503978646d+02 !Ev(3) -0.1309704275d+05 !Ev(4) -0.8313305258d-01 !Ev(5) 0.6636975027d+02 !Ev(6) 0.9849317662d+04 !Ev(7) #AUX !collision integral specification CI2 collision integral model of Younglove & 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). \ ? \ ?N.B. all temperatures on IPTS-68\ ? !end of info section 134.86 !lower temperature limit [K] 500.00 !upper temperature limit [K] 0.00 !(dummy) upper pressure limit 0.00 !(dummy) maximum density 9 !number of terms -3.0328138281 !Omega (eq 20): coeffs of {(e/kT)**((4-n)/3)} 16.918880086 !N.B. there is misprint in Younglove & Ely, the exponent -37.189364917 ! is ((4-n)/3) not ((n+2)/3) 41.288861858 -24.61592114 8.948843096 -1.8739245042 0.209661014 !N.B. wrong sign in Younglove & Ely, Table 2 -0.009657044 #STN !surface tension specification ST1 surface tension model ?LITERATURE REFERENCE \ ?fit of the 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.\ ?\ ? Coffin, C.C. and Maass, O. (1928). The preparation and physical properties of ? alpha-, beta- and gamma-butylene and normal and isobutane. J. Am. Chem. Soc. ? 50: 1427-1437.\ ? !end info 134.86 !lower temperature limit [K] 425.16 !upper temperature limit [K] 0.00 !(dummy) upper pressure limit 0.00 !(dummy) maximum density 1 !number of terms 425.16d0 !critical temperature used in fit (dummy) 0.05418d0 1.26d0 !sigma0 and n @END c 1 2 3 4 5 6 7 8 c2345678901234567890123456789012345678901234567890123456789012345678901234567890