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Sources of Energy: Types & Definition


Energy is what we need for doing work.





We can get energy by various sources. 

 

Sources of Energy: Types & Definition


 





Some are found naturally, Others can be collected by converting the primary sources.





Therefore, we can classify the sources of energy into two main groups.





One can be called as Primary source of energy and the other is known as secondary source.




Primary source is like the prime source of energy available in nature in the form of sunlight, wind, coal, gas, geothermal and so on.





On the other hand, secondary source of energy indicates the one which is extracted or converted from the primary source mentioned earlier.









For example, electricity is one of the most Supreme secondary energy sources.





We get electricity from a coal fired power plant which is driven by the energy produced from it.





Likewise, from a solar powered plant, we get electricity from solar photovoltaic module that acts like a collector of sunlight and converts it to the desired form of electricity.





So coal and sunlight are the naturally found primary energy Source.





and by converting it, we can get secondary form of Energy.





Now, Let's come to another Classification of Energy in form of sustainability.





Here sources of energy is classified into two major division.





One is non-renewable Source of energy and the other is known as renewable energy source.





Non-renewable source of energy is also familiar as conventional form of energy or fossil fuel based energy source.





As the name indicates, it is the form of energy sources that are found





in nature and are not unlimited.





Being formed by hydrogen and carbon chain, this energy source is also popularly known as hydrocarbon based energy because





It consists of mainly the fossil fuel such as coal, oil and natural gas extracted from earth crust.





Though there is ample supply of coal in the world now but it is prohibited to use in power production sector because of its environmental impact on generating maximum GHG compared to other fossil fuels.





Among them, natural gas is considered as low pollutant fuel and is also responsible for less carbon emission.





Whereas, oil or petroleum has the moderate amount of carbon emission and still in the driving seat of the world's energy production share.









The other form is known as renewable energy sources followed by solar energy,





wind energy, hydro energy, tidal energy, bio gas, geothermal energy and so on.





The most familiar and widely used form of this source is energy from sun.





We can harvest its energy through solar photovoltaic module where electricity can be generated.









Also solar thermal energy is used to feed thermal power plant by solar power tower or parabolic trough.





Wind energy is also very common in practice to be used in wind turbine technology.





Hydro energy is mainly used in hydro power plant where the force of water is used to rotate turbine blade that produces electricity later with the help of other mechanism.





Geothermal energy is naturally found hot steam that can collect to heat up things and to produce electricity with the help of steam turbine.









Bio gas or biomass is the types of energy source that uses anaerobic digestion process where dry leaves, cow dung,





manure and other organic food leftover get in the form of compost and thus methane gas is produced along with other gases with the absence of oxygen.





Later, these gases is then used to cook food.





Beside these energy sources, nuclear energy is also prominent source of energy which can be used to produce electricity in nuclear power plant.





But this type of energy is not considered as renewable source of energy.





Most common raw material of this type of energy source is uranium which is used in a controlled way in the reactors of the plant.










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