Class 8 Chemistry Combustion and Flame Fuel Efficiency

Fuel Efficiency

The amount of energy produced in the form of heat as result of combustion of complete combustion of 1Kg of fuel is known as calorific value of fuel expressed in unit called kilojoule per Kg (kJ/Kg).

Calorific value of some of the fuels are as follows:

 

Fuel

Calorific Value

Cow dung

6000-8000

Wood

17000-22000

Coal

25000-33000

Petrol

45000

Kerosene

 

45000

Diesel

 

45000

Methane

50000

CNG

50000

LPG

55000

Biogas

35000-40000

Hydrogen

150000

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