physics - source of energy

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Physics - Source of EnergyPhysics - Source of Energy

IntroductionIntroduction

Energy, which is neither created nor destroyed, has many sources; significant of them areEnergy, which is neither created nor destroyed, has many sources; significant of them are−−

Muscular energyMuscular energy − Most of the organisms have it − Most of the organisms have it ; this is the; this is the

reason that we have the capacity to do physical works.reason that we have the capacity to do physical works.

Electrical energyElectrical energy − Most of the electrical appliances in our home run on electrical − Most of the electrical appliances in our home run on electricalenergy.energy.

Chemical energyChemical energy − chemical energy is normally used in cooking, running − chemical energy is normally used in cooking, runningvehicles, etc.vehicles, etc.

Based on the energy reserves, energy is categorized as −Based on the energy reserves, energy is categorized as −

Conventional Source of EnergyConventional Source of Energy − The sources of energy, which is found in − The sources of energy, which is found in

limited amount limited amount , are known as conventional source of energy., are known as conventional source of energy.

E.g. fossil fuels E.g. fossil fuels ..

Non-Convention Source of EnergyNon-Convention Source of Energy − It is also known as renewable source of − It is also known as renewable source ofenergy. E.g. wind energy, solar energy, geo-thermal energy, etc.energy. E.g. wind energy, solar energy, geo-thermal energy, etc.

Thermal Power PlantThermal Power Plant

Huge amount of fossil fuel is burnt to heat up water to produce steam, which ultimatelyHuge amount of fossil fuel is burnt to heat up water to produce steam, which ultimatelyruns a turbine and generate electricity.runs a turbine and generate electricity.

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The term thermal power plant is used purposefully, as fuel is burnt to produce heat energyThe term thermal power plant is used purposefully, as fuel is burnt to produce heat energywhich is ultimately converted into the electrical energy.which is ultimately converted into the electrical energy.

Hydro Power PlantsHydro Power Plants

Running/falling water has huge potential energy; the hydro power plant converts thisRunning/falling water has huge potential energy; the hydro power plant converts thispotential energy into electricity.potential energy into electricity.

Dams are purposefully constructed to electricity through water.Dams are purposefully constructed to electricity through water.



However, construction of big dams is threatful for the respective ecosystem; therefore, bigHowever, construction of big dams is threatful for the respective ecosystem; therefore, bigdams are allowed to be constructed only in particular geographic location.dams are allowed to be constructed only in particular geographic location.

Bio Mass FuelBio Mass Fuel

The fuels, generated through the products of plants and animals, are known as bio massThe fuels, generated through the products of plants and animals, are known as bio mass

fuel. Gobar Gas fuel. Gobar Gas is the best example of bio mass fuel. is the best example of bio mass fuel.

Bio-gas is an excellent source of fuel, as it contains about 75% methane.Bio-gas is an excellent source of fuel, as it contains about 75% methane.

Bio-gas burns without smoke and leaves no residue like ash in wood.Bio-gas burns without smoke and leaves no residue like ash in wood.

Wind EnergyWind Energy

Wind has great amount of kinetic energy, which can be harnessed by wind mills.Wind has great amount of kinetic energy, which can be harnessed by wind mills.

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The rotatory motion of the windmill is set to run the turbine that ultimately generatesThe rotatory motion of the windmill is set to run the turbine that ultimately generateselectric energy.electric energy.

In Denmark, more than 25% of electricity In Denmark, more than 25% of electricity are generated are generated

through a vast network of windmills; therefore, it is known as ‘through a vast network of windmills; therefore, it is known as ‘country of windscountry of winds.’.’

However, in terms of total output, Germany is ranked first.However, in terms of total output, Germany is ranked first.

India has fifth position in terms of harnessing wind energy for the production of electricity.India has fifth position in terms of harnessing wind energy for the production of electricity.

With the capacity of 380 MW, Kanyakumari With the capacity of 380 MW, Kanyakumari , is the largest wind energy, is the largest wind energy

farm in India.farm in India.

Wind energy is an environment-friendly technology and efficient source of renewableWind energy is an environment-friendly technology and efficient source of renewableenergy.energy.

However, one of the biggest limitations with the wind energy is – it cannot be set upHowever, one of the biggest limitations with the wind energy is – it cannot be set upanywhere, but rather it can be set up in the region where we can get the wind blowinganywhere, but rather it can be set up in the region where we can get the wind blowing

consistently at the speed consistently at the speed 15 km/hour. 15 km/hour.

Solar EnergySolar Energy

The energy produced through the solar rays, is known as solar energy.The energy produced through the solar rays, is known as solar energy.

Such kind of energy has very low maintenance cost.Such kind of energy has very low maintenance cost.

It can be used on small scale It can be used on small scale as well as to run a as well as to run a

big industry, as it has a great potential.big industry, as it has a great potential.

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However, the technology is still very costly; therefore, it is difficult to make widespread.However, the technology is still very costly; therefore, it is difficult to make widespread.

Tidal EnergyTidal Energy

The energy produced by the potential power of tides is known as tidal energy.The energy produced by the potential power of tides is known as tidal energy.

A turbine is set up at the opening of the dam A turbine is set up at the opening of the dam that converts that converts

tidal energy to electricity.tidal energy to electricity.

Wave EnergyWave Energy

Sea waves have great potential energy nearby the coast; hence, the electric energySea waves have great potential energy nearby the coast; hence, the electric energyproduced by the sea wave is known as wave energy.produced by the sea wave is known as wave energy.

Ocean Thermal EnergyOcean Thermal Energy

The electric energy, produced by the temperature difference of oceanic water, is known asThe electric energy, produced by the temperature difference of oceanic water, is known asocean thermal energy.ocean thermal energy.

Geothermal EnergyGeothermal Energy

The electric energy, produced from the natural hot springs, is known as geothermal energy.The electric energy, produced from the natural hot springs, is known as geothermal energy.Manikarn, Himachal Pradesh, is the site of geothermal energy in India.Manikarn, Himachal Pradesh, is the site of geothermal energy in India.

Nuclear EnergyNuclear Energy

The energy, released by the process of nuclear fission or fusion, is known as nuclearThe energy, released by the process of nuclear fission or fusion, is known as nuclearenergy.energy.

During the process of nuclear reactions, the nuclear energy is released, which is used toDuring the process of nuclear reactions, the nuclear energy is released, which is used togenerate heat; this heat energy is then used in steam turbines to produce electricity.generate heat; this heat energy is then used in steam turbines to produce electricity.

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physics - source of energy

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