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 |
