Energy Content in some Common Energy Sources
Common energy sources and their energy content
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The energy content in some common energy sources are indicated in the table below:
| Energy Source | Unit | Energy Content (Btu) |
| Electricity | 1 Kilowatt-hour | 3412 |
| Coal | 1 Short Ton | 20681000 |
| Crude Oil | 1 Barrel - 42 gallons | 5800000 |
| Diesel Fuel | 1 Gallon | 139000 |
| Gasoline | 1 Gallon | 124000 |
| Natural Gas | 1 Cubic Foot | 1026 |
| Heating Oil | 1 Gallon | 139000 |
| Propane | 1 Gallon | 91000 |
| Residual Fuel Oil 1) | 1 Barrel - 42 gallons | 6287000 |
1) Residual Fuel Oil - The liquid or semi-liquid, high-boiling fraction of residue from the distillation of crude oil.
Btu - British Thermal Unit
The unit of heat in the imperial system - the BTU - is
- the amount of heat required to raise the temperature of one pound of water through 1oF (58.5oF - 59.5oF) at sea level (30 inches of mercury).
- 1 Btu (British thermal unit) = 1055.06 J = 107.6 kpm = 2.931 10-4 kWh = 0.252 kcal = 778.16 ft lbf = 1.0551010 ergs = 252 cal = 0.293 watt- hours
An item using one kilowatt-hour of electricity will generate 3412 Btu.
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