Page 121 - Mechanical Engineer's Data Handbook

110 MECHANICAL ENGINEER'S DATA HANDBOOK

3.4.4 Specific heat capacities

Specific heat capacity of solids and liquids
(kJkg-' K-')

Aluminium 0.897 Oil, machine 1.676
Aluminium bronze 0.897 Paraffin 2.100
Brass 0.377 Paraffin wax 2.140
Bronze 0.343 Petroleum 2.140
Cadmium 0.235 Phosphorus 0.796
Constantan 0.410 Platinum 0.133
Copper 0.384 Rubber 2.010
Ethanol 2.940 Salt, common 0.880
(ethyl alcohol) Sand 0.796
Glass: crown 0.670 Seawater 3.940
flint 0.503 Silica 0.800
Pyrex 0.753 Si 1 icon 0.737
Gold 0.129 Silver 0.236
Graphite 0.838 Tin 0.220
Ice 2.100 Titanium 0.523
Iron: cast 0.420 Tungsten 0.142
pure 0.447 Turpentine 1.760
Kerosene 2.100 Uranium 0.116
Lead 0.130 Vanadium 0.482
Magnesia 0.930 Water 4.196
Magnesium 1.030 Water, heavy 4.221
Mercury 0.138 Wood (typical) 2.0 to
Molybdenum 0.272 3 .O
Nickel 0.457 Zinc 0.388

Specific heat capacity of gases, gas constant and molecular weight (at normal pressure and temperature)
Specific (kJ kg-' K-') Gas constant, Molecular
C
heats )l=" R weight,
Gas CP C" C" (kJkg-'K-') M
~ ~~ ~
Air 1.005 0.7 18 1.4 0.2871 28.96
Ammonia 2.191 1.663 1.32 0.528 15.75
Argon 0.5234 0.3136 1.668 0.2081 40
Butane 1.68 1.51 1.11 0.17 58
Carbon dioxide 0.8457 0.6573 1.29 0.1889 44
Carbon monoxide 1.041 0.7449 1.398 0.2968 28
Chlorine 0.511 0.383 1.33 0.128 65
Ethane 1.7668 1.4947 1.18 0.2765 30
Helium 5.234 3.1568 1.659 2.077 4
Hydrogen 14.323 10.1965 1.405 4.124 2
Hydrogen chloride 0.813 0.583 1.40 0.230 36.15
Methane 2.2316 1.7124 1.30 0.5183 16
Nitrogen 1.040 0.7436 1.40 0.2968 28
Nitrous oxide 0.928 0.708 1.31 0.220 37.8
Oxygen 0.9182 0.6586 1.394 0.2598 32
Propane 1.6915 1.507 1.12 0.1886 44
Sulphur dioxide 0.6448 0.5150 1.25 0.1298 64