Energy
Energy sources
By availability in nature and capacity for regeneration
By origin
By use in each country
By enviromental impact
Renewable
Non-renewable
Abundant and inexhaustible
Can be not abundant and don´t regenerate
Primary
Secondary
Directly from nature
Coal, natural gas, etc
Resulting from transformation of primary sources
Electricity, petroleum derivates, etc
Conventional
Non-conventional
Commonly used in industrialised countries
Fossil fuels
Alternative energy sources
Solar and wind power
Clean or non-polluting
Pollutants
Low enviromental impact
Negative effects on the enviroment
Solar power
Petroleum
Wind power
Coal
Electricity
It can be easily transformed and transported long distances without wasting so much energy
Electricity power plants
Conventional electricity power plants
Non-conventional electricity power plants
How do they...
Produce electricity?
Transport electricity
Turbine
Alternator
Converts mechanical energy into the rotating movement of a shaft
Rotor
Stator
Is conected to the turbine shaft, it moves
It doesn't move, electricity is pruduced on it's coils
By high voltage cables attached to towers
Fossil fuel thermal power plants
Hydroelectric power plants
Nuclear power plants
It has a nuclear fission reactor that produces steam to move the turbine. Uranium is used as fuel
Coal or natural gas is used to heat water and produce the steam needed to move the turbine
It uses the potential energy of the water stored in a dam coverting it into kinetic energy that moves the blades of a turbine.
Geothrmal power plants
Biomass thermal energy
Solar power plants
Ocean power plants
Wind power plants
It uses the kinetic energy of wind to move the blades of a turbine
Photovoltaic power plant
Phototermal power plant
It uses the heat of sun to produce steam that moves a turbine
Solar radiation is transformed into electricity directly by photovoltaic panels
It uses the heat founded in deep levels of Earth
It uses agricultural waste to produce heat that produces steam
It uses the mechanical energy of the waves and the ties