Question

compare the usefulness of solid, liquid and gaseous fuel.

Answer 1

Solid Fuels

Advantages

(i) Easy to transport

(ii) Convenient to store

(iii) Cost of production is low

(iv) Moderate ignition temperature.

Disadvantages

(i) Ash content is high

(ii) Thermal efficiency is low

(iii) Burns with clinker formation

(iv) Cannot be controlled easily

(v) Cost of handling is high

(vi) Calorific value is lower

Liquid fuels

Advantages

(i) Higher calorific value

(ii) No dust or ash formed

(iii) Firing is easier and extinguished easily by stopping the supply

(iv) Easy to transport

(v) Can be stored indefinitely

(vi) Less excess air required

(vii) Less furnace space

(viii) No wear and tear

(ix) Used in internal combustion engine as fuel.

Disadvantages

(i) Cost is higher

(ii) Storage is expensive

(iii) Greater risk of fire hazards

Answer 2

Solid fuels:it is easy to carry or store
Liquid fuel:It has higher calorific value and no dust or ashes are formed
Gaseous fuel: It include LPG and CNG gases