Combustion Of Other Fuels Aside From Fossils

Question 1

Combustion of biomass

Answer 1

Usually has a higher water content than coal.
Has a lower heating value compared to other fossil fuels .
Transportation and handling is complicated due to large volumes needed.

Could be combusted with coal to reduce CO2 emissions.

Question 2

What is heating value ?

Answer 2

This is simply the amount of heat released when a fuel is burnt. Tells us how much energy we can get from burning specific amount of fuel.

Question 3

Combustion of Peat

Answer 3

This also has a high water content and therefore has to be dried to less than 50% of water content before combustion.

Question 4

Combustion of waste

Answer 4

Very heterogeneous fuel
Has lots of ash with low melting point.
Causes corrosion
Requires large chamber volume to ensure complete combustion
Needs large excess air supply
Large requirements on filters to minimize emissions
Has potentially dangerous emissions and expensive cleaning of exhaust