Question

Name the unit in which the calorific value of a fuel is expressed.

Answer 1

Calorific value:

1. Calorific value refers to the amount of heat produced per unit volume of a substance following full combustion.
2. It is given by$=\frac{\mathrm{Heat}\mathrm{produced}\mathrm{in}\mathrm{Kilojules}}{\mathrm{Amount}\mathrm{of}\mathrm{feul}\mathrm{consumed}\mathrm{in}\mathrm{Kg}}$$=\mathrm{kJ}{\mathrm{kg}}^{-1}$
3. The calorific value of fuel determines its efficiency. If the value is high, then the efficiency will be high as well. If the value is low, the efficiency will suffer as well. The efficiency of a product is directly related to its calorific value.
4. When fuels are burned, they have the potential to generate energy in thermal power plants. The calorific value of fuel determines how well it produces power.
5. Gas shippers and suppliers utilize the calorie value to bill their customers.

Therefore, $\mathrm{kJ}{\mathrm{kg}}^{-1}$is the unit in which the calorific value of fuel is expressed.