Heat(ing) Value
The heat developed by the combustion of one pound of fuel, Btu per Pound.
Higher Heating Value (HHV)
The standard measure of the energy released during combustion of a fuel, assuming the product water is in the liquid state.
Lower Heating Value (LHV)
The standard measure of the energy released during combustion of a fuel, assuming the product water is in the gaseous state.
See also: British Thermal Unit, Fuel, Higher Heating Value, Lower Heating Value.
