1. By Kasey Poirier, Eean Albro, Chase Lee
Renewable Resources
By Kasey Poirier, Eean Albro, Chase Lee

2. Hydro (Water)
Hydroelectric energy is produced by the force of falling water.
Dependent on both the available flow and the height from which it falls.
High dam’s are a good place to use hydro power because potential energy that is stored there.
Water rushes down the sluice and strikes the rotary blades of turbines.
Turbine's rotation spins electromagnets which generate current in stationary coils of wire.
Finally, the current is put through a transformer where the voltage is increased for long distance transmission over power lines

3. Wind The wind blows on the blades and makes them turn.
The blades turns a shaft inside the nacelle (the box at the top of the turbine)
The shaft goes into a gearbox which increases the rotation speed.
The power output goes to a transformer, which converts the electricity coming out of the generator at around 700 Volts (V) to the right voltage for distribution system, typically 33,000 V.
The national grid transmits the power around the country

4. Solar Advantages Disadvantages Saves you money
The sun's light shines down on solar cells (also known as photovoltaic cells) and it absorbs the energy to make energy.
Advantages
Saves you money
Clean, renewable (unlike gas, oil and coal) and sustainable, helping to protect our environment
Can be utilized to offset utility-supplied energy consumption.
Low/ no maintenance
Virtually maintenance free and will last for decades.
Disadvantages
High cost of the semi-conducting materials used in building one
Solar panels require quite a large area for installation to achieve a good level of efficiency.
The efficiency of the system also relies on the location of the sun
Similarly, no solar energy will be produced during nighttime.

5. Thermal Powers
Ocean
Warm surface water is hot enough to boil a fluid with a low boiling point, such as ammonia.
3) The gas is then cooled by passing it through cold water pumped up from the ocean depths.
4) The gas condenses back into a liquid that can be used again.
2) The gas from the boiling fluid creates enough pressure to drive a turbine that generates electricity.
5) The water is returned to the deep ocean.

6. Nuclear Power, Part 1 The heart of a nuclear
power plant is the nuclear
reactor.
Pressurized Water
Reactor (PWR)
Inside a very strong
pressure vessel is an array
of fuel assemblies containing uranium rods enriched to about 4 percent
U 235, each rod clad in zircaloy sheathing
The reactor contains water, at high pressure to prevent boiling, and also
neutron absorbing control rods

7. Nuclear Power, Part 2
The fuel array can be made to produce a nuclear chain reaction, in which U235 nuclei fission or split and releases heat
heat is transferred to the water which is circulated to an external circuit
Here heat is transferred to a secondary water circuit
the steam produced hear feeds a steam turbine/generator

8. Nuclear Power 3
the reactor power output is controlled by the control rods and also soluble boron poisoning
When loaded with fresh fuel the reactor has excess reactivity which is controlled by these means
during operation the fuel is gradually used up and eventually, at intervals of roughly 2 years, it has to be shutdown for fresh fuel to be loaded in place of spent fuel

9. Reason for switching to renewable resources for energy.
Less pollution in the air
Cleaner energy
healthier environment
Safer
Constant energy

10. Links
Thermal Power: Solar: Nuclear power: Wind power: