Thermophysical Properties: Potassium
From Thermal-FluidsPedia
Potassium, K, Molecular Mass: 39.1, (Tsat = 1032.2 K; Tm = 336.4 K) T Temp. K pv saturation pressure (105 Pa) latent heat (kJ/kg) ρℓ liquid density (kg/m³) ρv vapor density (10-3 kg/m³) μℓ liquid viscosity (10-4 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 tension (10-3N/m) cp,ℓ liquid specific heat (kJ/kg-K) cp,v vapor specific heat (10-1 kJ/kg-K) 600 0.0009258 2143 766.9 0.69 2.380 43.85 98.2 0.771 0.8194 700 0.01022 2108 743.3 6.68 1.981 40.72 0.0142 92.2 0.762 0.9646 800 0.06116 2068 719.6 36.44 1.707 134 37.58 0.0175 86.2 0.761 1.066 900 0.2441 2023 695.7 134.80 1.507 148 34.45 0.0205 80.2 0.769 1.116 1000 0.7322 1970 671.6 380.20 1.354 163 31.32 0.0228 74.2 0.792 1.121 1100 1.864 1924 647.3 871.90 1.233 178 28.19 0.0248 68.2 0.819 1.100 1200 3.913 1872 622.9 1703.00 1.135 196 25.05 0.0266 62.2 0.846 1.064 1300 7.304 1820 598.4 2969.10 1.053 212 22.00 0.0280 56.2 0.873 1.022 1400 12.44 1765 573.6 4768.70 0.984 228 19.00 0.0293 53.0 0.899 0.9796 1500 20.0 1711 548.8 7062.10 0.925 242 16.00 0.0303 47.0 0.924
Propertya Temp. α0 α1 α2 α3 α4 α5 Error(%) pv (105Pa) 600–1500 K -60.792 2.0072-1b -2.9607-4 2.3898-7 -1.0021-10 1.7070-14 0.41 hlv (kJ/kg) 600–1500 K 7.4437 1.3335-3 -2.6188-6 2.2227-9 -9.95606-13 1.6216-16 0.05 ρℓ (kg/m³) 600–1500 K 6.8171 -2.9903-4 6.4906-8 -1.1285-10 4.9791-14 -1.0285-17 0.01 ρv (10-3 kg/m³) 600–1500 K -43.901 1.5060-1 -1.9914-4 1.4552-7 -5.6005-11 8.8657-15 0.36 μℓ (10-4Ns/m²) 600–1500 K 3.7145 -9.2264-3 1.1332-5 -8.1123-9 3.0732-12 -4.7794-16 0.02 μv (10-7 Ns/m²) 800–1500 K -2.7247 3.1905-2 -5.5202-5 4.8605-8 -2.1075-11 3.5833-15 0.14 kℓ (W/m-K) 600–1500 K 4.6283 -3.1884-3 5.6190-6 -6.0362-9 3.0539-12 -6.3262-16 0.04 kv (W/m-K) 700–1500 K -9.5175 1.5278-2 -1.5544-5 7.1481-9 -1.0428-12 -1.0113-16 0.14 σ (10-3N/m) 600–1500 K 9.5646 -2.5629-2 5.2720-5 -5.3832-8 2.6602-11 -5.1195-15 0.51 cp,ℓ (kJ/kg-K) 600–1500 K -1.5299 8.1223-3 -1.9186-5 2.0925-8 -1.0612-11 2.0459-15 0.11 cp,v (10-1kJ/kg-K) 600–1500 K -2.2283 2.9093-3 6.2200-6 -1.3592-8 8.6984-12 -1.8919-15 0.05
Polynomial function: ln(Property) = α0 + α1T + α2T2 + α3T3 + α4T4 + α5T5
References
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
Vargaftik, N.B., 1975, Handbook of Physical Properties of Liquids and Gases, Hemisphere, New York, NY.