CALORIFIC VALUES AND IGNITION POINTS

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 Calorific value =  The amount of heat produced by the complete combustion of a material or fuel. Measured in units of energy per amount of material, e.g. kJ/kg.

Autoignition temperature  = the lowest temperature at which it will spontaneously ignite in a normal atmosphere without an external source of ignition, such as a flame or spark. The temperature at which a chemical will ignite decreases as the pressure increases or oxygen concentration increases.

Fuel     Calorific value(KJ / kg)      Ignition point (Cdeg)
Alcohol                   30000            420 
Butane                   49510            420 
Methane                   55530            580 
Propane                   50530            470 
Natural gas                   43000            580 
Kerosene                   35000            295 
Diesel oil                   44800   
Gasoline                   47300            280 
Petrol                   48000   
Gas oil                   38000            336 
Heavy fuel oil                   41200   

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