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Energy and its transformation (Non-conventional electric power plants…

- - - - Conventional:
        
        • Most commonly used in mdustrialised countnes
        
        • Example: energy that comes from fossil fuels
      - Non-conventional
        
        • Alternative energy sources
        
        • In early stages of their technological development
        
        • Solar and wind power belong to this group
    - - Primary:
        
        • Obtained directly from nature
        
        • Examples, crude oil, natural gas, coal, nuclear energy
        and renewable energies
      - Secondary:
        
        • Resulting from transformation of pnmary sources
    - - Renewable
        
        • Abundant and inexhaustible
      - Non-renewable:
        
        Depleted when we use them up
        
        • Cannot be renewed in a short penod of time
        
        • May or may not be abundant
    - - Clean or non-polluting:
        
        • Low environmental impact
        
        Don't generate by-products that pollute the
        environment
      - Pollutants:
        
        • Sources that have negative effects on the environment,
        for example, they might generate by-products that
        severely pollute the environment
- - - - • The turbine converts mechanical energy into the rotating movement of a shaft
      - • An alternator has a fixed part, called a stator, and a moving part, called a rotor, connected to the turbine shaft
    - - 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