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Higher calorific values for some common fuels a coke, oil, wood, hydrogen and many more
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The calorific value of a fuel is the quantity of heat produced
by its combustion - at constant pressure and under a conditions
known as " normal " of temperature and pressure (i.e. to 0?C
and under a pressure of 1,013 mbar).
The combustion of a fuel product generates water vapor. Certain
techniques are used to recover the quantity of heat contained in
this water vapor by condensing it.
The Higher Calorific Value (or Gross Calorific Value - GCV)
supposes that the water of combustion is entirely condensed and
that the heat contained in the water vapor is recovered.
The Lower Calorific Value (or Net Calorific Value - NCV) supposes
that the products of combustion contains the water vapor. The
heat contained in the water vapor is not recovered.
| Fuel | Higher
Calorific Value
(Gross Calorific Value - GCV) |
|
| kJ/kg | Btu/lb | |
| Anthracite | 32,500 - 34,000 | 14,000 - 14,500 |
| Bituminous coal | 17,000 - 23,250 | 7,300 - 10,000 |
| Charcoal | 29,600 | 12,800 |
| Coke | 28,000 - 31,000 | 12,000 - 13,500 |
| Lignite | 16,300 | 7,000 |
| Peat | 13,800 - 20,500 | 5,500 - 8,800 |
| Semi anthracite | 26,700 - 32,500 | 11,500 - 14,000 |
| Wood (dry) | 14,400 - 17,400 | 6,200 - 7,500 |
| kJ/m3 | Btu/ft3 | |
| Acetylene | 56,000 | |
| Butane C4H10 | 133,000 | |
| Hydrogen | 13,000 | |
| Natural gas | 43,000 | |
| Propane C3H8 | 101,000 | |
| Town gas | 18,000 | |
| kJ/l | Btu/gal | |
| Acetone (kJ/kg) | 29,000 | |
| Alcohol, 96% (kJ/kg) | 30,000 | |
| Ether (kJ/kg) | 43,000 | |
| Kerosene | 35,000 | 154,000 |
| Gas oil | 38,000 | 164,000 |
| Glycerin (kJ/kg) | 19,000 | |
| Heavy fuel oil | 41,200 | 177,000 |
| Oils, vegetable (kJ/kg) | 39,000 - 48,000 | |
| Petrol (kJ/kg) | 48,000 | |
| Petroleum (kJ/kg) | 43,000 | |
| Tar (kJ/kg) | 36,000 | |
| Turpentine (kJ/kg) |
44,000 |
|
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