Page 164 - Mechanical Engineers' Handbook (Volume 4)

1 Conduction Heat Transfer 153

Table 6 Thermal Properties of Liquid Metals a
Melting
Point T C p v 10 7 k 10 5
2
3
2
Composition (K) (K) (kg/m ) (kJ/kg K) (m /s) (W/m K) (m /s) Pr
Bismuth 544 589 10,011 0.1444 1.617 16.4 0.138 0.0142
1033 9,467 0.1645 0.8343 15.6 1.001 0.0083
Lead 600 644 10,540 0.159 2.276 16.1 1.084 0.024
755 10,412 0.155 1.849 15.6 1.223 0.017
Mercury 234 273 13,595 0.140 1.240 8.180 0.429 0.0290
600 12,809 0.136 0.711 11.95 0.688 0.0103
Potassium 337 422 807.3 0.80 4.608 45.0 6.99 0.0066
977 674.4 0.75 1.905 33.1 6.55 0.0029
Sodium 371 366 929.1 1.38 7.516 86.2 6.71 0.011
977 778.5 1.26 2.285 59.7 6.12 0.0037
NaK (56%/44%) 292 366 887.4 1.130 6.522 25.6 2.55 0.026
977 740.1 1.043 2.174 28.9 3.74 0.0058
PbBi (44.5%/55.5%) 398 422 10,524 0.147 — 9.05 0.586 —
644 10,236 0.147 1.496 11.86 0.790 0.189
a Adapted from Liquid Metals Handbook, The Atomic Energy Commission, Department of the Navy, Washington, DC, 1952.

Table 7 Thermal Properties of Gases at Atmospheric Pressure a
T C p v 10 6 k 10 4
3
2
2
Gas (K) (kg/m ) (kJ/kg K) (m /s) (W/m K) (m /s) Pr
Air 100 3.6010 1.0266 1.923 0.009246 0.0250 0.768
300 1.1774 1.0057 16.84 0.02624 0.2216 0.708
2500 0.1394 1.688 543.0 0.175 7.437 0.730
220 0.3828 2.198 19.0 0.0171 0.2054 0.93
Ammonia, NH 3
473 0.4405 2.395 37.4 0.0467 0.4421 0.84
Carbon dioxide 220 2.4733 0.783 4.490 0.01081 0.0592 0.818
600 0.8938 1.076 30.02 0.04311 0.4483 0.668
Carbon monoxide 220 1.5536 1.0429 8.903 0.01906 0.1176 0.758
600 0.5685 1.0877 52.06 0.04446 0.7190 0.724
Helium 33 1.4657 5.200 3.42 0.0353 0.04625 0.74
900 0.05286 5.200 781.3 0.298 10.834 0.72
Hydrogen 30 0.8472 10.840 1.895 0.0228 0.02493 0.759
300 0.0819 14.314 109.5 0.182 1.554 0.706
1000 0.0819 14.314 109.5 0.182 1.554 0.706
Nitrogen 100 3.4808 1.0722 1.971 0.009450 0.02531 0.786
300 1.1421 1.0408 15.63 0.0262 0.204 0.713
1200 0.2851 1.2037 156.1 0.07184 2.0932 0.748
Oxygen 100 3.9918 0.9479 1.946 0.00903 0.02388 0.815
300 1.3007 0.9203 15.86 0.02676 0.2235 0.709
600 0.6504 1.0044 52.15 0.04832 0.7399 0.704
Steam (H 2 O vapor) 380 0.5863 2.060 21.6 0.0246 0.2036 1.060
850 0.2579 2.186 115.2 0.0637 1.130 1.019

a
Adapted from Ref. 2.