Energy Content in Common Energy Sources

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The energy content in common energy sources are indicated in the table below:

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 1^oF (58.5^oF - 59.5^oF) 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 lb_f = 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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