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ENERGY - Coggle Diagram

- - - - Clean
      - Pollutans
    - - Renewable
      - Non-renewable
    - - Conventional
      - Non-conventional
    - - Primary
      - Secondary
- - - - Electricity is generated as a result of two combined cycles, cycle that use air and gas, and a convencional thermal cycle. during the first cycle, a gas turbine is used that includes a compressor.
        Air is mixed with the gas and is burnt, wich generate electricityin the turbine alternator sistem. The combustion gases are transported to a boiler, where they transfer their energy to the water during the secon cycle.
        This type of power plant performs better than those with only one cycle.
  - - - Gravity-driven hydraulic power plants.
        
        Water used ollows the course of a river and it won't be reused.
      - Pump-driven hydraulic power plants.
        
        Water descendes into a reservoir located at a lower height, then pump to a higher reservoir to reuse it.
- - - - Electrical power plants use an external source of energy to produce electricity. To do this, they rely on a turbine-alternator system.
  - - - Electricity cannot be stored; therefore, it must be transported to consumption centres. This transport involves several processes:
        • Increasing the voltage to 220 000 V or 400 000 V to prevent significant energy loss, due to the Joule effect.
        • Transporting it by high voltage cable attached to towers
        • Decreasing the voltage at the electncity substations to 3-30 kV
        • Distribution to homes, offices, industries and public facilities During this stage, the voltage is reduced to 230-400 V.