Calorific value

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These pieces of charcoal have a calorific value of 7543 KCal/kg. They burned for almost 4 hours.

The calorific value of a substance is the amount of energy that is released when burning a given amount of the substance. This energy is released in the form of heat, when the substance is burned in standard conditions. Calorific value is also known as heat of combustion or energy value.