ENERGY RESOURCES. Why is there an energy problem ?

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Presentation transcript:

ENERGY RESOURCES

Why is there an energy problem ?

Waste heat All the countries in the world use lots of energy We are running out of some sources of fuel

Using Energy Extra carbon dioxide in the atmosphere is causing global warming. Sulphur dioxide is causing acid rain

Waste heat We waste too much energy from our houses We should make our houses better

Coal fired power stations

Coal Coal is burnt To boil water To make steam To spin turbines To drive generators

Coal fired power station 1 m 11 s Fossil Fuels

Coal The remains of trees that fell into swampy forests millions of years ago Mainly carbon found in seams compressed by the rocks above

Coal fired power station 0 m 20 s Burning coal

Coal fired power station 0 m 40 s How a turbine works

Using Energy The electricity made by the turbines is sent round the country through the National Grid.

Coal fired power station 1 m 0 s How a condenser works

Coal fired power station Condenser Turbine Coal powder Boiler Generator 1 m 20s

Nuclear power stations

Nuclear Atoms are split To boil water To make steam To spin turbines To drive generators

Nuclear power station 2 m 10 s Nuclear power

Nuclear power station Control rodsTurbine Steam Fuel rods 1 min

Nuclear power station 0 m 20 s Chain reaction

Wind power

Wind Wind turns propellers To drive generators

Wind power There are strong winds in many places around the World

Wind power 0 m 36 s Wind power

Some designs use propellers and some use wing designs Horizontal axis Vertical axis

Wind power 1 m 10 s Environmental impact

Hydroelectric power

Hydroelectric Water in a high lake Rushes down a pipe Turning a turbine To drive generators

Hydroelectric power station 1 m 44 s Hydroelectric power

Hydroelectric power station 1 m 0 s Environmental impact

Biomass

BIOMASS Biological material burns To boil water To make steam To spin turbines To drive generators

Biomass – Biological matter that can be burnt Chicken droppings Cow slurry Biomass power stations

Biomass engine 1 m 10 s Biogas engine

Tidal power

TIDAL Sea water rushing in Spins turbines To drive generators

Tidal power 0 m 25 s Tides

Tidal power The tide pushes past turbine – generators as it fills and then empties an estuary It has been suggested that the Bristol Channel might be a good place for this

Wave power

WAVE Wave movement Spins turbines To drive generators

Wave power 0 m 12 s The cause of waves

Wave power Waves make Salter’s Ducks or Clams bob up and down turning generators

Wave power Water waves pressurise air to turn turbines 0 m 15 s Wave power

Oil and gas

OIL and GAS Oil and gas are burnt To boil water To make steam To spin turbines To drive generators

Oil and gas They are formed from tiny creatures that lived in the sea millions of years ago. Both are found under anticlines (domed shaped rocks) which are impermeable (do not let fluids through)

Solar

SOLAR CELLS AND PANNELS Heat and light from the Sun Either heats water Or makes electricity

Solar Cells Turn light into electricity but it is not very efficient and cells expensive to make

How do the different methods compare ?