Fuels and Calorific Value Quiz

A fuel may be defined as any combustible substance which during combustion gives a large amount of industrially and domestically useful heat.

1. Should have high calorific value per unit weight. 2. Moisture content should be low to have high heating value. 3. Should not produce harmful products like CO2, SO2, H2S which are poisonous and pollute air. 4. Low content of non-combustible matter in the form of ash or clinkers. 5. Controllable combustion of fuel so it can be started and stopped. 6. Economically and easily available.

The significance of Proximate and Ultimate analysis lies in determining the composition and properties of fuels, including their heating value and combustion characteristics.

<p>Dulong's formula is used for calculating the calorific value of fuels.</p> Signup and view all the answers

<p>Knocking in internal combustion engines refers to the undesirable phenomenon of uncontrolled ignition of the air-fuel mixture. It is related to the structure of fuels through factors such as octane and cetane numbers, which influence the knocking tendency of the fuel.</p> Signup and view all the answers