Generation of Electricity

• Basic parts of a Coal Powerplant

  A) Coal

  B) Boiler

  C) Steam

  D) Turbine

  E) Generator

  F) Condenser

  
• • Primary energy sources: Coal, natural gas, oil, nuclear power and other natural sources.
  • Renewable sources: Some of these sources can be use repeatedly and replaced naturally.
  • Non-Renewable sources: Some sources take millions of years to form
• Basic components of a power plant


  • Heat source
  • Turbine or generator
  • Condenser
  • Pump
• • Heat Source: Provides heat to generate steam. For turbines to work efficiently, heat must enter it at a really high temperature and pressure as possible.
  • Turbine or Generator: Uses the steam produced in the heat source. The spinning turbines cause large magnets to turn within copper wire coils in the generators.
  • Condenser: Turns the steam (gas) back to water (liquid) so that it can be returned to the heat source to be heated again.
  • Pump: Provides the force to circulate the water to the system
• Law of Conservation of Energy: "Energy can neither be created nor destroyed", meaning that energy that is used does not disappear but transformed into another type of energy.
• Coal Fired or Fossil Fuel Power plant a thermal power station which burn coal to generate electricity. The coal is usually pulverized and then burned in a pulverized coalfired boiler.

  A) Coal

  B) Steam

  C) Turbine

  D) Generator

  E) Thermal Energy

  F) Kinetic Energy

  G) Mechanical

  H) Electrical

  
• Solar Power plant A solar cell or photovoltaic cell is a device that converts light into electric current using the photovoltaic effect.

  A) Heat from the Sun

  B) Photovoltaic Cell

  C) Electricity

  D) Solar Radiation Energy

  E) Chemical Energy

  F) Electrical Energy

  
• Nuclear Power Plant: Thermal power station in which the heat source is a nuclear reactor.

  A) U-235/Po-239 fuel

  B) Heat

  C) Steam from boiling Water

  D) Generator

  E) Nuclear Energy

  F) Thermal Energy

  G) Kinetic Energy

  H) Mechanical

  I) Electrical

  
• Geothermal Power Plant is a steam turbine thermal power stations in that heat from the Earth’s core is used to heat water.

  A) Drilled hotspots underground

  B) Steam

  C) Turbine

  D) Generator

  E) Electrical

  F) Mechanical

  G) Kinetic

  H) Geothermal Energy

  
• Windmill is a structure that converts wind power into rotational energy by means of vanes called sails or blades around a rotor.

  A) Air moves quickly

  B) Turbine

  C) Generator

  D) Electrical

  E) Mechanical

  F) Wind Energy

  
• Hydroelectric Power Plant captures the energy of falling water to generate electricity.

  A) Water flow from reservoir

  B) Turbine

  C) Generator

  D) Electrical

  E) Mechanical

  F) Hydroelectric Energy

  
• Fill in the blanks with the correct word. Choose your answer inside the box.

  A) power stations

  B) Heat

  C) Steam

  D) Kinetic

  E) Generator

  
• Identify the energy transfers in Coal Power Station.

  A) Burnt

  B) heat/thermal

  C) Steam

  D) Kinetic

  E) Mechanical

  F) spin/turn

  G) Mechanical

  H) wrapped

  I) Electrical

  J) Electrical

  K) current

  L) Chemical

  M) Mechanical Heat Energy