Download Coal fired power stations

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
Fossil Fuels
1 m 11 s
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
Burning coal
0 m 20 s
Coal fired power station
How a turbine works
0 m 40 s
Using Energy
The electricity made by
the turbines is sent
round the country
through the National
Grid.
Coal fired power station
How a condenser works
1m0s
Coal fired power station
Turbine
Generator
Coal powder
Boiler
Condenser
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
Nuclear power
2 m 10 s
Nuclear power station
Steam
Control rods
Fuel rods
Turbine
1 min
Nuclear power station
Chain reaction
0 m 20 s
Wind power
Wind
Wind turns propellers
To drive generators
Wind power
There are strong winds in many places around the World
Wind power
Wind power
0 m 36 s
Wind power
Some designs use propellers and
some use wing designs
Vertical
axis
Horizontal
axis
Wind power
Environmental impact
1 m 10 s
Hydroelectric
power
Hydroelectric
Water in a high lake
Rushes down a pipe
Turning a turbine
To drive generators
Hydroelectric power station
Hydroelectric power
1 m 44 s
Hydroelectric power station
Environmental impact
1m0s
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
Biogas engine
1 m 10 s
Tidal power
TIDAL
Sea water rushing in
Spins turbines
To drive generators
Tidal power
Tides
0 m 25 s
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
The cause of waves
0 m 12 s
Wave power
Waves make Salter’s Ducks or Clams bob up and down
turning generators
Wave power
Water waves pressurise air to turn turbines
Wave power
0 m 15 s
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 ?