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Isobaric Properties for 1,1,1,3,3-Pentafluoropropane (R245fa)

Fluid Data

Isobaric Data for P = 1.0000 bar

Temperature (C)Pressure (bar)Density (kg/m3)Volume (m3/kg)Internal Energy (kJ/mol)Enthalpy (kJ/mol)Entropy (J/mol*K)Cv (J/mol*K)Cp (J/mol*K)Sound Spd. (m/s)Joule-Thomson (K/bar)Viscosity (uPa*s)Therm. Cond. (W/m*K)Phase
0.00001.00001404.10.00071218-2.6131-2.6035-9.2794121.83172.95782.92-0.028085570.470.097932liquid
1.00001.00001401.60.00071346-2.4400-2.4305-8.6469122.01173.19778.41-0.027875562.130.097607liquid
2.00001.00001399.10.00071476-2.2667-2.2572-8.0159122.19173.43773.91-0.027663553.970.097283liquid
3.00001.00001396.50.00071606-2.0932-2.0836-7.3863122.36173.67769.42-0.027449545.980.096960liquid
4.00001.00001394.00.00071737-1.9194-1.9098-6.7581122.54173.91764.94-0.027231538.160.096637liquid
5.00001.00001391.40.00071868-1.7454-1.7358-6.1313122.72174.15760.48-0.027010530.500.096315liquid
6.00001.00001388.90.00072001-1.5712-1.5615-5.5059122.90174.40756.02-0.026787523.000.095994liquid
7.00001.00001386.30.00072135-1.3967-1.3870-4.8818123.08174.65751.58-0.026560515.660.095673liquid
8.00001.00001383.70.00072269-1.2219-1.2122-4.2590123.27174.90747.15-0.026330508.460.095352liquid
9.00001.00001381.10.00072404-1.0469-1.0372-3.6376123.45175.15742.72-0.026097501.410.095033liquid
10.0001.00001378.50.00072540-0.87163-0.86191-3.0175123.63175.40738.31-0.025860494.490.094713liquid
11.0001.00001375.90.00072678-0.69612-0.68638-2.3987123.81175.66733.90-0.025621487.710.094395liquid
12.0001.00001373.30.00072816-0.52035-0.51059-1.7811124.00175.92729.50-0.025377481.060.094076liquid
13.0001.00001370.70.00072955-0.34432-0.33454-1.1648124.18176.18725.11-0.025130474.540.093759liquid
14.0001.00001368.10.00073095-0.16803-0.15823-0.54974124.36176.44720.72-0.024880468.140.093442liquid
14.5681.00001366.60.00073175-0.067787-0.057978-0.20094124.47176.59718.23-0.024736464.560.093262liquid
14.5681.00005.84930.1709624.04226.33491.526106.95117.56134.043.51449.90960.013082vapor
15.0001.00005.83890.1712624.08926.38491.703107.04117.63134.173.49269.92600.013114vapor
16.0001.00005.81520.1719624.19726.50292.111107.25117.80134.453.44279.96390.013187vapor
17.0001.00005.79160.1726624.30526.62092.518107.46117.97134.733.393710.0020.013261vapor
18.0001.00005.76830.1733624.41426.73892.924107.67118.14135.013.345710.0400.013334vapor
19.0001.00005.74530.1740624.52326.85693.329107.88118.31135.293.298710.0770.013408vapor
20.0001.00005.72240.1747524.63226.97593.734108.09118.49135.573.252510.1150.013482vapor
21.0001.00005.69980.1754524.74127.09394.137108.30118.66135.853.207210.1530.013556vapor
22.0001.00005.67740.1761424.85127.21294.540108.51118.84136.133.162710.1910.013630vapor
23.0001.00005.65520.1768324.96127.33194.943108.72119.02136.403.119110.2280.013705vapor
24.0001.00005.63320.1775225.07027.45095.344108.94119.20136.683.076310.2660.013779vapor
25.0001.00005.61140.1782125.18027.56995.745109.15119.38136.953.034310.3030.013854vapor
26.0001.00005.58990.1789025.29127.68996.145109.36119.56137.222.993010.3410.013929vapor
27.0001.00005.56850.1795825.40127.80896.544109.58119.74137.492.952510.3780.014004vapor
28.0001.00005.54730.1802725.51227.92896.943109.79119.92137.762.912810.4160.014079vapor
29.0001.00005.52630.1809525.62328.04897.341110.01120.11138.032.873810.4530.014154vapor
30.0001.00005.50550.1816425.73428.16897.738110.22120.29138.302.835510.4910.014229vapor
31.0001.00005.48490.1823225.84528.28998.134110.44120.48138.562.797910.5280.014305vapor
32.0001.00005.46450.1830025.95628.40998.530110.65120.67138.832.761010.5660.014381vapor
33.0001.00005.44420.1836826.06828.53098.925110.87120.86139.092.724710.6030.014456vapor
34.0001.00005.42420.1843626.18028.65199.320111.09121.05139.352.689110.6400.014532vapor
35.0001.00005.40430.1850426.29228.77299.713111.30121.24139.622.654110.6770.014608vapor
36.0001.00005.38450.1857226.40428.894100.11111.52121.43139.882.619810.7150.014685vapor
37.0001.00005.36500.1863926.51729.015100.50111.74121.62140.142.586010.7520.014761vapor
38.0001.00005.34560.1870726.62929.137100.89111.96121.82140.402.552910.7890.014837vapor
39.0001.00005.32630.1877526.74229.259101.28112.17122.01140.652.520310.8260.014914vapor
40.0001.00005.30730.1884226.85529.381101.67112.39122.21140.912.488310.8630.014991vapor
41.0001.00005.28840.1890926.96829.503102.06112.61122.40141.172.456810.9000.015067vapor
42.0001.00005.26960.1897727.08229.626102.45112.83122.60141.422.425910.9370.015144vapor
43.0001.00005.25100.1904427.19629.748102.84113.05122.79141.682.395610.9740.015222vapor
44.0001.00005.23260.1911127.30929.871103.23113.27122.99141.932.365711.0110.015299vapor
45.0001.00005.21430.1917827.42429.994103.62113.49123.19142.182.336411.0480.015376vapor
46.0001.00005.19610.1924527.53830.118104.00113.71123.39142.432.307611.0850.015454vapor
47.0001.00005.17810.1931227.65230.241104.39113.93123.59142.692.279211.1220.015531vapor
48.0001.00005.16030.1937927.76730.365104.78114.15123.79142.942.251411.1590.015609vapor
49.0001.00005.14250.1944627.88230.489105.16114.37123.99143.182.224011.1960.015687vapor
50.0001.00005.12490.1951227.99730.613105.54114.59124.19143.432.197011.2330.015765vapor

Auxiliary Data

Reference States, Normal Boiling Point Convention

Additional fluid properties

References

Equation of state

Huber, M.L.; Ely, J.F., A predictive extended corresponding states model for pure and mixed refrigerants including an equation of state for R134a, Int. J. Refrig., 1994, 17, 18-31. [all data]

Equation of state

Defibaugh, D.R.; Moldover, M.R., Compressed and saturated liquid densities for 18 halogenated organic compounds, J. Chem. Eng. Data, 1997, 42, 1, 160-168. [all data]

Transport model

Klein, S.A.; McLinden, M.O.; Laesecke, A., An improved extended corresponding states method for estimation of viscosity of pure refrigerants and mixtures, Int. J. Refrig., 1997, 20, 208-217. [all data]

Transport model

McLinden, M.O.; Klein, S.A.; Perkins, R.A., An extended corresponding states model for the thermal conductivity of refrigerants and refrigerant mixtures, Int. J. Refrig., 2000, 23, 43-63. [all data]

Transport model

Yata, J.; Hori, M.; Niki, M.; Isono, Y.; Yanagitani, Y., Coexistence curve of HFC-134a and thermal conductivity of HFC-245fa, Fluid Phase Equilib., 2000, 174, 221-229. [all data]

Transport model

Dohrn, R.; Treckmann, R.; Heinemann, T., Vapor-phase thermal conductivity of 1,1,1,2,2-pentafluoropropane, 1,1,1,3,3-pentafluoropropane, 1,1,2,2,3-pentafluoropropane and carbon dioxide, Fluid Phase Equilib., 1999, 158-160, 1021-1028. [all data]

Transport model

Geller, V.; Bivens, D.B.; Yokozeki, A., Transport properties and surface tension of hydrofluorocarbons HFC236fa and HFC245fa, Proc. 20th Int. Congress of Refrig, IIR/IIF, Sydney, Australia, 1999, 0. [all data]

Transport model

Laesecke, A.; Hafer, R.F., Viscosity of fluorinated propane isomers. 2. Measurements of three compounds and model comparisons, J. Chem. Eng. Data, 1998, 43, 1, 84-92. [all data]

Surface tension

Schmidt, J.W.; Carrillo-Nava, E.; Moldover, M.R., Partially halogenated hydrocarbons CHFCl-CF3, CF3-CH3, CF3-CHF-CHF2, CF3-CH2-CF3, CHF2-CF2-CH2F, CF3-CH2-CHF2, CF3-O-CHF2: Critical temperature, refractive indices, surface tension and estimates of liquid, vapor and critical densities, Fluid Phase Equilibria, 1996, 122, 187-206. [all data]

Additional Information

Equation of state

Average absolute deviations of the fit from the experimental data were: PVT: 0.02%; Psat: 0.23%

Transport model

Average absolute deviations of the fit from the experimental data were: Yata: 1.30%; Dohrn: 2.63%; Geller:7.80%; Overall: 6.01%

Average absolute deviations of the fit from the experimental data were: Laesecke: 1.64%; Geller: 2.54%; Overall: 1.93%

The Lennard-Jones parameters are estimated.

Important Information About This Data

The data above are from an older version of the NIST Reference Fluid Thermodynamic and Transport Properties Database (REFPROP version 7). We will be updating our site to use the newer version (version 9.1) of this database in the the next couple of months. Information on REFPROP version 9.1 can be found here. REFPROP version 9.1 includes additional data and features not available from this site.

Notes