Question

explain the calorific value of the fuel and characteristics of ideal fuel.
No spam..question for stars and moderators.​

Answer 1

Calorific value of Fuel:-

As we know all fuels produce heat energy, some produce less, some produce more. Calorific value of a fuel keeps a check on this. When a a large amount of heat energy is produced on complete combustion on about 1 Kg of fuel is known as its calorific value.

It is expressed in (Kk/kg).

________________________________

Characteristics of an Ideal Fuel are:-

• It should have high calorific value.
• It should not leave residues on burning.
• It should not produce harmful and toxic substances and gases.
• It should be ubiquitous.
• It should be cheap.
• It should be easy to export or import and safe to use.
• It should burn smoothly and easily.
• It should produce a large amount of heat energy.
• It should maintain a proper ignition temperature, that shouldn't be too high or too low.

________________________________

Answer 2

$\sf{The~ calorific ~value~ of~ the~ fuel }$

• The calorific value or fuel value of a fuel is the amount of heat energy given out when one gram of the fuel is completely burnt in excess of oxygen.

• Examples of some common fuels are petroleum, natural gas and coal. These are called fossil fuels.

• Different types of fuels have different heats of combustion. Heat of combustion is expressed in kilojoules per mole.

• In our daily life, it is not very practical to measure the quantity of a fuel in mole.

• We normally measure the quantity of a fuel by its mass.