Thermal data
This section contains useful data about thermal physics (heat
energy).
General thermal data |
|
Absolute zero |
-273.16 oC |
Molar gas constant |
8.3 molK-1 |
Boltzmann's constant |
1.38x10-23 JK-1 |
Triple point of water |
273.15 K |
Deep space temperature |
3 K |
Critical temperature of air |
183 K |
Helium point |
2.186 K |
Boiling point of sulphur |
444.6 oC |
Standard atmosphere |
1.013x105 Pa |
|
|
Thermal conductivity |
Wm-1K-1 |
Air at STP |
0.024 |
Aluminium |
201 |
Ashphalt |
1.2 |
Brass |
110 |
Breeze block |
0.16 - 0.8 depending on density |
Brick |
0.48-0.7 depending on density |
Cardboard |
0.22 |
Chlorine |
0.007 |
Concrete |
1.83 (density 2400 kgm-3 |
Cork |
0.05 |
Corrugated cardboard |
0.047 |
Copper |
385 |
Felt (roofing) |
0.19 |
Glass |
0.8-1.0 |
Iron |
80 |
Methylated spirits |
0.20 |
Polystyrene (expanded) |
0.034 |
Silver |
419 |
Snow (freshly fallen) |
0.17 |
Thatch |
0.08 |
Water |
0.59 |
Wood |
0.15 |
Zinc |
385 |
|
|
Thermal expansion (linear) |
oC-1 |
Iron |
1.2x10-5 |
Copper |
1.7x10-5 |
|
|
Specific heat capacities |
Jkg-1K-1 |
Aluminium |
800 |
Concrete |
880 |
Copper |
385 |
Glass |
600 |
Ice |
2100 |
Rock (marble) |
880 |
Rubber |
1600 |
Water |
4200 |
|
|
Specific latent heat |
Jkg-1 |
Water (vaporisation) |
2.26x106 |
Methyl alcohol (vaporisation) |
1.12x106 |
Water (fusion) |
3.34x105 |
|
|
r.m.s speeds of molecules at STP |
ms-1 |
Air |
485 |
Bromine |
206 |
Carbon dioxide |
392 |
Helium |
1303 |
Hydrogen |
1838 |
Oxygen |
461 |