FOSSIL FUELS

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Electrical Energy from Fossil Fuels : 

Electrical Energy from Fossil Fuels Z.Halith Ahamed 276008

Slide 2: 

FOSSIL FUELS These are energy sources that come from sediments, deep down in the earth's surface. They are created by anaerobic decomposition of organic matter buried deep in sediments, under influence of heat and pressure, roughly 650 million years ago. Coal Oil (Petroleum) Natural Gas

20 richest countries consume: : 

20 richest countries consume: 50% of coal 80% of natural gas 65% of oil

COALThe energy bridge to the future!! : 

COALThe energy bridge to the future!! First fossil fuel to be discovered. Pushed to background because of its environmental effects. The two major uses for coal – steel production and electricity. Accounts for 23% of the global primary energy demand, 38% of world electricity production and 70% of world steel production. 28% of our energy

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Natural gas provides around 20% of the world's consumption of energy

Energy from Fossil Fuels : 

Energy from Fossil Fuels Every time we use an electrical device, energy flows from a power station to the device you are using. Most of our electricity comes from the burning of the fossil fuels coal and gas.

Energy from Fossil Fuels : 

Energy from Fossil Fuels Fossil fuels are non-renewable energy stores. Once they have been burned we cannot replace them.

Inside the power station : 

Inside the power station

Inside the power station : 

Inside the power station Chemical energy in coal Thermal energy Kinetic energy in turbine Kinetic energy in generator Electrical energy Energy flow diagram :

Problems with fossil fuels : 

Problems with fossil fuels They are non-renewable and one day we may run out of them.

Problems with fossil fuels : 

Problems with fossil fuels They produce CO2 when burnt. CO2 is a greenhouse gas. It contributes to global warming.

Problems with fossil fuels : 

Problems with fossil fuels Coal produces the most carbon dioxide. Natural gas produces much less carbon dioxide. Nuclear power produces NO carbon dioxide.

Problems with fossil fuels : 

Problems with fossil fuels They often contain sulphur. Sulphur is released as sulphur dioxide, SO2 , when the fuel is burnt. This is very acidic and causes acid rain.

Did you know? : 

Did you know? France has no fossil fuels. It relies on nuclear power to generate electricity. It produces so much electricity it is able to see its excess to the UK through cables under the English Channel (or as the French would say, La Manche)

Problems with fossil fuels : 

Problems with fossil fuels Acid rain can be avoided in two ways. Removing the sulphur from the fuel Removing SO2 from the power station’s waste gases. Both these options are expensive and add considerably to the cost of producing electricity.

Alternative ways of generating electricity : 

Alternative ways of generating electricity Wind energy Hydroelectricity Wave power Solar power Nuclear power

Wind Energy : 

Wind Energy

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Hydroelectric schemes These use the GPE of water on hills to generate electricity as it flows downhill.

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Tidal Power.

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Geothermal In certain parts of the world, heat from the Earth can be used to produce steam to power turbines and heat homes.

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THANK YOU