Thermophysical Properties: heptane
From Thermal-FluidsPedia
Heptane, C7H16, Molecular Mass: 100.2, (Tsat = 98.43 °C; Tm = -90.59 °C) T Temp. °C pv saturation pressure (105 Pa) hlv latent heat (kJ/kg) ρℓ liquid density (103 kg/m³) ρv vapor density (103 kg/m³) μℓ liquid viscosity (10-3 N-s/m²) μv vapor viscosity (10-7 N-s/m²) kℓ liquid thermal conductivity (W/m-K) kv vapor thermal conductivity a (W/m-K) σ liquid surface tensiona (10-3N/m) cp,ℓ liquid specific heat (kJ/kg-K) cp,v vapor specific heat b (kJ/kg-K) -20 0.003866 383.1 0.7172 0.6890 0.140 0.0084 2.10 0.83 0 0.0152 375.6 0.7005 0.000070 0.5260 0.134 0.0099 2.16 0.87 20 0.0472 366.0 0.6836 0.000200 0.4140 0.129 0.0115 20.86 2.23 0.92 40 0.1230 354.7 0.6665 0.000500 0.3380 0.123 0.0132 18.47 2.30 0.97 60 0.2800 342.6 0.6491 0.001100 0.2810 0.118 0.0151 16.39 2.39 1.02 80 0.5700 330.1 0.6311 0.002000 0.2390 0.113 0.0170 14.35 2.47 1.05 100 1.0606 316.7 0.6124 0.003597 0.1980 73.6 0.0189 12.47 2.57 1.09 120 1.8330 302.9 0.5926 0.006075 0.1672 78.2 0.0207 10.63 2.67 1.16 140 2.9790 287.4 0.5711 0.009785 0.1427 83.4 0.0228 8.87 2.78 160 4.5990 269.5 0.5481 0.015110 0.1217 89.7 0.0251 7.19 2.89
Propertya Temp. α0 α1 α2 α3 α4 α5 Error(%) pv (105Pa) -20–160 °C -4.1875 6.2035-2b -2.8899-4 1.3328-6 -4.8688-9 8.7514-12 0.07 hlv (kJ/kg) -20–160 °C 5.9286 -1.1575-3 -8.0368-6 3.0846-8 3.8138-11 -8.8137-13 0.01 ρℓ (103kg/m³) -20–160 °C -0.35593 -1.2011-3 -1.1416-6 4.0160-9 -8.1251-11 1.2225-13 0.01 ρv (103kg/m³) -0 – 160 °C -9.5679 5.4885-2 -6.8200-5 -2.6778-6 2.4493-8 -6.4331-11 0.81 μℓ (10-3Ns/m²) -20–160 °C -6.4586-1 -1.2617-2 5.1105-5 -2.0879-7 -4.8532-10 4.0509-12 0.38 μv (10-7 Ns/m²) 100–160 °C 3.8877 6.1806-3 -3.0481-5 9.7703-8 0.0 0.0 0.01 kℓ (W/m-K) -20– 80 °C -2.0099 -1.6511-3 -1.7251-6 -9.2954-7 2.2360-8 -1.4260-10 0.01 kv (W/m-K) -20–160 °C -4.6160 7.7908-3 -1.5605-5 1.158-7 -1.4660-9 5.4467-12 0.14 σ (10-3 N/m) -20–160 °C 3.1702 -7.2045-3 3.7806-5 -4.8714-7 2.3540-9 -5.3416-12 0.06 cp,ℓ (kJ/kg-K) -20–160 °C 7.7016-1 1.4975-3 3.6697-6 -2.9931-8 2.3965-10 -7.3288-13 0.07 cp,v (kJ/kg-K) -20–160 °C -1.3938-1 2.6295-3 1.1500-5 -1.7062-7 -1.4205-9 1.5923-11 0.11
Polynomial function: ln(Property) = α0 + α1T + α2T2 + α3T3 + α4T4 + α5T5
References
Dunn, P. and Reay, D.A. 1982, Heat Pipes, Pergamon Press, New York.
Faghri, A., and Zhang, Y., 2006, Transport Phenomena in Multiphase Systems, Elsevier, Burlington, MA.
Faghri Amir , Zhang Yuwen , Howell John, 2010, Advanced Heat and Mass Transfer, Global Digital Press, Columbia, MO
Rohsenow, W.N., Hartnett, J.P., and Ganic, E.N. eds., 1985, Handbook of Heat Transfer Fundamentals, McGraw-Hill, New York, NY.
Vargaftik, N.B., 1975, Handbook of Physical Properties of Liquids and Gases, Hemisphere, New York, NY.