R141b !short name (same as file name) 1717-00-6 !CAS number 1,1-dichloro-1-fluoroethane HCFC-141b !synonym1 R-141b !synonym2 116.95 !molecular weight [g/mol] 169.85 !triple pt temperature [K] Sukornic, B. (1989) Int. J. Thermophysics 10: 553-561. 305.196 !normal boiling pt [K] (computed from ECS model) 477.35 !critical temperature [K] 4250.0 !critical pressure [kPa] 3.9333 !critical density [mol/L] 0.22483 !acentric factor (computed from ECS model) 2.014 !dipole moment [Debye]; Meyer & Morrison (1991) J. Chem. Eng. Data 36: 409-413. IIR !default reference state 6.001 !version number ! compiled by E.W. Lemmon, NIST Physical and Chemical Properties Division, Boulder, Colorado ! 06-12-97 EWL, original version ! 06-16-97 MM, add dipole moment, triple point temp ! 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 ECS extended corresponding states model w/ T- and rho-dependent shape factors. ?LITERATURE REFERENCE \ ?Huber, M.L. and Ely, J.F. A predictive extended corresponding states model for ? pure and mixed refrigerants including an equation of state for R134a. ? Int. J. Refrigeration 17:18-31 (1994).\ ?\ ?ECS parameters fitted by E.W. Lemmon, NIST, 06-12-97\ ?Average absolute deviations of the fit from the experimental data were:\ ? PVT(vapor): 0.04%; PVT(liq.): 0.02%; Pv: 0.06%; Dsat(liq.): 0.02% ? Snd(vapor): 0.02%; Snd(liq.): 0.21% ?\ ?DATA SOURCES\ ?Takagi, T. and Hongo, M. ? Ultrasonic Speeds in Liquid 1,1-Dichloro-1-Fluoroethane at ? Temperatures from 283 to 373 K and Pressures up to 50 MPa. ? J. Chem. Eng. Data, 38:60-62 (1993).\ ?\ ?Goodwin, A.R.H. and Moldover, M.R. ? Thermophysical Properties of Gaseous Refrigerants from Speed of Sound ? Measurements. II. Results for 1,1-dichloro-1-fluoroethane (CCl(2)FCH(3)). ? J. Chem. Phys. (1991).\ ?\ ?Weber, L.A. PVT and Thermodynamic Properties of R141B in the Gas Phase. ? Paper Number 69, 18th Int. Cong. Ref., Montreal, Quebec, Canada, (1991).\ ?\ ?Weber, L.A. Ebulliometric Measurement of the Vapor Pressures of R123 and R141b. ? Fluid Phase Equilib., 80:141-148 (1992).\ ?\ ?Matsuo, S., Yanaka, Y., Kubota, H. and Makita, T. ? Liquid Densities of HCFC 225ca, HCFC 225cb and HCFC 141b. ? J. Chem. Eng. Data, 39:903-906 (1994).\ ?\ !end info 233.15 !lower temperature limit [K] 500.00 !upper temperature limit [K] 60000.0 !upper pressure limit [kPa] 11.601 !maximum density [mol/L] CPP !pointer to Cp0 model propane.fld BWR !pointer to reference fluid model 0.15238 !acentric factor for R12 used in shape factor correlation 0.27627 !critical compressibility for R12 used in correlation 0.22483 !acentric factor for fluid used in shape factor correlation 477.35 !critical temperature [K] 4250.0 !critical pressure [kPa] 3.9333 !critical density [mol/L] 2 !number of temperature coefficients for 'f' shape factor 0.558499411d-1 0 !alpha1 of Huber & Ely -0.742177639d+0 1 !alpha2 of Huber & Ely (log(Tr) term) 0 !number of density coefficients for 'f' shape factor 2 !number of temperature coefficients for 'h' shape factor -0.129788293d+0 0 !beta1 of Huber & Ely 0.284793372d+0 1 !beta2 of Huber & Ely (log(Tr) term) 0 !number of density coefficients for 'h' shape factor #AUX !auxiliary model specification CPP polynomial fit for ideal gas heat capacity ?Based on data of:\ ?Goodwin, A.R.H. and Moldover, M.R. ? Thermophysical properties of gaseous refrigerants from speed of sound ? measurements. II. results for 1,1-dichloro-1-fluoroethane ? (CCl(2)FCH(3)). J. Chem. Phys. (1991). ?\ !end info 233.15 !lower temperature limit [K] 500.0 !upper temperature limit [K] 0.00 !upper pressure limit [kPa] 0.00 !maximum density [mol/L] 1.000 8.31451 !reducing parameters for T, Cp0 3 0 !Nterms: polynonial, exponential 2.57223d+0 0.0 3.30341d-2 1.0 -2.05025d-5 2.0 #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). \ ?\ ?Lennard-Jones parameters are estimated.\ ?\ !end of info section 233.15 !lower temperature limit [K] 600.0 !upper temperature limit [K] 200000.0 !upper pressure limit [kPa] 17.9380 !maximum density [mol/L] 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 \ ?Okada, M. and Higashi, Y. (1995). Experimental surface tensions for HFC-32, ? HCFC-124, HFC-125, HCFC-141b, HCFC-142b, and HFC-152a. ? Int. J. Thermophysics 16(3): 791-800. ?\ !end info 169.85 !lower temperature limit [K] 477.35 !upper temperature limit [K] 0.00 !(dummy) upper pressure limit 0.00 !(dummy) maximum density 1 !number of terms 477.31d0 !critical temperature used by Okada & Watanabe (dummy) 0.06087d0 1.235d0 !sigma0 and n @END c 1 2 3 4 5 6 7 8 c2345678901234567890123456789012345678901234567890123456789012345678901234567890