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Alternative

Sources ofEnergy

Midhul A Kumar

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Sources of energysources of energy are divided in two parts.

A non-renewable resourceis a natural resourcewhich cannot beproduced, grown, generated, or is a resource that does not renew itselfat a sucient rate, once depleted there is no more available forfuture needs. Also considered non-renewable are resources that areconsumed much faster than nature can create them.

Examples

Fossil fuels(such as coal, petroleum, and natural gas)

nuclear power(uranium)

Renewable source- enewable source is natural source whichdoes not have a limited supply. enewable energy can be usedagain and again, and will never run out.

Examples!iomass

"ydro

#eothermal

Solar

$ind

http://en.wikipedia.org/wiki/Natural_resourcehttp://en.wikipedia.org/wiki/Fossil_fuelshttp://en.wikipedia.org/wiki/Coalhttp://en.wikipedia.org/wiki/Petroleumhttp://en.wikipedia.org/wiki/Natural_gashttp://en.wikipedia.org/wiki/Nuclear_powerhttp://en.wikipedia.org/wiki/Uraniumhttp://en.wikipedia.org/wiki/Uraniumhttp://en.wikipedia.org/wiki/Nuclear_powerhttp://en.wikipedia.org/wiki/Natural_gashttp://en.wikipedia.org/wiki/Petroleumhttp://en.wikipedia.org/wiki/Coalhttp://en.wikipedia.org/wiki/Fossil_fuelshttp://en.wikipedia.org/wiki/Natural_resource

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Alternative Sources of%nergy

$ind %nergy

#eothermal %nergy

"ydro-electricity

!iofuel

Solar %nergy

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$ind %nergy

Wind poweror wind energyisthe energye'tractedfrom windusing windturbines toproduce electrical power

A typical wind tower consists to blades which turn a shaft increasingrotation speed and converting intoelectrical energy.

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*$ind %nergy

+he potential energy of wind isconverted into inetic energyas electricity.

hina, SA and #ermany are

top three wind powergenerators of the world.

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"ydroelectricity

"ydroelectricity has been generated from/owing water for many years.

%lectricity is generated from storing waterin a reservoir and releasing it to turbines,run-o0 iver and pumping water at

height and releasing it to turn the turbine. 1t is the most widely used form of

renewable energy, accounting for 23percent of global electricity generation

http://en.wikipedia.org/wiki/Renewable_energyhttp://en.wikipedia.org/wiki/Renewable_energy

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!io Fuel

!iofuel, alternative source ofenergy, has been used toreplace conventional fuels.

+hese fuels are made by abiomassconversion(biomass refers to recentlyliving organisms, most oftenreferring to plantsor plant-derived materials

http://en.wikipedia.org/wiki/Biomasshttp://en.wikipedia.org/wiki/Plantshttp://en.wikipedia.org/wiki/Plantshttp://en.wikipedia.org/wiki/Biomass

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*!io Fuel

+his new biomass can be usedfor biofuels. !iofuels haveincreased in popularity becauseof rising oil pricesand the needfor energy security.

http://en.wikipedia.org/wiki/Price_of_petroleumhttp://en.wikipedia.org/wiki/Energy_securityhttp://en.wikipedia.org/wiki/Energy_securityhttp://en.wikipedia.org/wiki/Price_of_petroleum

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#eothermal %nergy

"eat of the earth can be asource of electricity nown asgeothermal energy.

#eothermal reservoir made up

of hot water heated by magmadeep inside the earth, is asource of electricity.

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*#eothermal %nergy

Steam rising from the hot wateris used to turn the turbineproducing electricity.

4ore than 5 countries of the

world are producing geothermalenergy and S is the largestproducer.

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*#eothermal %nergy

1celand has highest potentialof geothermal energy and36 of the electricity isproduced from geothermal

energy in the country.

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Solar %nergy %lectricity produced from solar

energy is alternative to 7nitesources of energy such as coaland oil.

Solar power installation athome or small oces has beenincreasing in the past decades.

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*Solar %nergy

4icro scale solar powergeneration is e0ective toreduce fossil fueldependence, minimi8eenvironmental pollution andmeet increasing energydemand.

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*Solar %nergy

"ousehold energy production hasadvantages of reducing energylosses during the transmissionfrom central power station.

Silicon is used as a

semiconductor material in thesolar cells.

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Advantages

+hey are ine'haustible 9 they will always beavailable 9 they are renewable

+hey are clean and will not damage the %arth

+here are several types 9 so one or more of them

is present in each country 4ost natural sources can be used on a small scale

and serve local needs therefore cutting costs oftransmitting the energy

1t :ust re;uire a one time big investment.