Calorific value of fuel:
It can be defined as the amount of heat liberated in KJ or Kcal by the complete combustion of 1 Kg of fuel.
There are two types of calorific values
Higher calorific value (HCV) = It is the total heat liberated in KJ or Kcal by the complete combustion of 1 Kg of fuel.
Lower calorific value (LCV) = It is the difference of Higher calorific value and heat absorbed by water vapors.
LCV = (HCV – x.588.76) Kcal/Kg
Where ‘x’ is the fraction of water vapors.