electricity production

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Electricity production


How electricity is generated.?

• Three basic elements are required to produce electricity:

- Motion (required to rotate a turbine)

- Magnetic Field

- Conductors

• A form of energy is required to rotate a turbine which is attached to the shaft of the generator rotor. The rotor spins through the stator producing

electricity.


Energy Production

What types of energy production do you think is suitable here?


Electricity from Fossil fuels

Electricity can be generated from the heat produced when fossil fuels are burnt.In the boiler or steam generating plant, heat from the burning fossil fuel turns water into steam.The steam, moving under high pressure, makes the turbine blades and shaft spin. The turbine is connected to the alternator, which produces electricity.


What do you see in the picture?

It’s a Dam, Right

What is it used for?

It is used to generate Electricity from moving water


Hydroelectric power - energy from falling water

What is hydro power?Hydropower is the energy that comes from the flow of moving water. The energy contained in running water can be turned into electricity.

How it works ?• A dam is built to trap water, usually in a

valley where there is an existing lake.

• Water is allowed to flow through tunnels in the dam, to turn turbines and thus drive generators.


Hydroelectric power - energy from falling water

• The water behind the dam flows through the intake and into a pipe called a penstock. The water pushes against blades in a turbine, causing them to turn.

• The turbine spins a generator to produce electricity.

20 % of world's electricity is from hydropower


Where are hydroelectric plants likely to be found?

In mountainous countries.Is hydroelectric power a renewable or renewable

source? Why?

Hydro-electric power is renewable. The Sun provides the water by evaporation from the sea, and will keep on doing so.


Nuclear Energy

What is Nuclear Energy? • When atoms split—or fission—they produce

large amounts of energy, which is called nuclear energy. This energy is released in the form of heat. As the atom fragments hit other atoms, they also split, producing more heat. A nuclear power plant uses this heat to produce electricity.


How a Nuclear Power Plant Works

Nuclear power plants run on uranium fuel. In the reactor, uranium atoms are split through a process known as fission. When atoms are spilt, they produce a large amount of energy that is then converted to heat. The heat boils water, creating steam that is used to turn turbines, which spins the shaft of a generator. Inside the generator, coils of wire spin in a magnetic field and electricity is produced.

Boiling Water Reactor (BWR)


Simulations

http://www.saskpower.com/poweringyourfuture/today/generation/animation.shtml

http://yteach.co.uk/page.php/resources/view_all?id=nuclear_fission_neutron_reaction_energy_conventional_power_engineering_reactor_t_page_8&from=search


Example-Hydropower

Advantages

• Clean (no greenhouse Gas emissions after set-up)

• Dams enable irrigation and flood control.

• Hydro power output is flexible and responsive to demand.

Disadvantages

• Renewable Concern about impact of dams on environments and river flows

• Vulnerable to variations in rainfall

• Large set up cost

Hydropower


Hope you Enjoyed Learning!

electricity production

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