Tag: solar energy and its applications

Kerosene is a hydrocarbon liquid which is highly combustible. Also known as lamp oil it is used as fuel in industry as well as households.

Method used for the formation of charcoal is thermal pyrolysis.It is a processes involved in charring of wood.

The traditional chulha provides a low thermal efficiency. The efficiency of the traditional chulhas is usually around $8-10$%

All are fuels except water

Firewood is a conventional source which is non-renewable.

Conventional resources are non-renewable resources. They cannot be replenished in foreseeable future.

Oil and petroleum are referred to as black gold. When extracted, it is black in colour, however, its market value is very high like gold.

Conventional sources : wood, coal, fossil fuels.

Heating value of coal is approximately $5000-6500 $  $kcal/kg$

Fuels formed due to the decomposition of dead animals and organic matter mainly in an anaerobic condition millions of years ago are fossil fuels. Coal, natural gas and petroleum are fossil fuels.