power plants present

8/3/2019 Power Plants Present

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Power Plants /Sources of Energy


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What is a POWERWhat is a POWERPLANT?PLANT?

A place where power or energy is generatedA place where power or energy is generated

from a given source. More correctly, a powerfrom a given source. More correctly, a power

plant can be said to be a facility whereplant can be said to be a facility whereelectrical energy is obtained by convertingelectrical energy is obtained by converting

mechanical energy. The type of energymechanical energy. The type of energy

converted depends on what type of powerconverted depends on what type of power

plant is being considered.plant is being considered.


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TYPES OF POWER PLANTTYPES OF POWER PLANT

Coal-Fired Power Plant a type of thermal

power station that produces electricity by

burning coal to drive a steam engine,

which turns an electric generator.


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Steam Power Plants - uses fuelssuch as petroleum, coal, orbiomass are burned to heat

water to create steam, thepressure of the steam spins aturbine turning the copper wire

inside the generator.


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Nuclear Power Plants generates energy

using nuclear fission to turn water intosteam. This drives the steam turbine,which spins a generator to produce power.


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Hydro Power Plants - These plants usethe kinetic energy of flowing water toproduce electrical energy. Hydro powerplants store water in large dams.

Geothermal power plants - are steam

power plants that tap into steamreleased from the earth.


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GENERATORGENERATOR

Property of electromagnetism that achanging magnetic field through a

loop of wire produces a voltage alongthe loop.

This voltage can drive a current and

provide energy to an external circuit.Simplest arrangement leads to

alternating current (AC)


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TRANSFORMER

Transformers use similar principle tostep-up or step-down voltage

Current through loop produces magneticfield along axis of loop

Secondary coil sees changing magneticfield, develops alternating voltage

Allows transmission at high voltage,household at low voltage.


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Distribution Grid

For power to be useful in aFor power to be useful in ahome or business, it comeshome or business, it comes

off the transmission grid andoff the transmission grid and

is steppedis stepped--down to thedown to thedistribution grid. This maydistribution grid. This may

happen in several phases. Ithappen in several phases. It

is the area where theis the area where the

conversion fromconversion from

"transmission" to "distribution""transmission" to "distribution"

occurs in a power substation.occurs in a power substation.


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How a power plant works


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It is classified as renewable and

nonrenewable.

Renewable energy recognize as sufficient,clean, reliable, and basically unlimited.

Nonrenewable energy cant be replaced in

a short amount of time and is limited.

Sources ofEnergySources ofEnergy


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RENEWABLE

GEOTHERMALGEOTHERMAL

is based onnaturallyoccurring heat

in theE

arth dueto radioactivedecay

SOLARSOLAR uses suns energy that directlyconverts sunlight to electrical energy.


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TIDAL ENERGY usesTIDAL ENERGY uses

the gravitational pull ofthe gravitational pull ofthe moon on our oceansthe moon on our oceans

to drive turbines.to drive turbines.

WIND ENERGYWIND ENERGY uses wind to push against

the turbine blades spinning the copper

wires inside the generator to create an

electric current.


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WAVEWAVEenergy is produced when electricityenergy is produced when electricity

generators are placed on the surface of thegenerators are placed on the surface of theocean. Energy output is determined by waveocean. Energy output is determined by wave

height, wave speed, wavelength, and waterheight, wave speed, wavelength, and water

density.density.


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NONRENEWABLE

FOSSIL FUELS

COAL generates large amount of energyin a relatively small area.

OIL burned to produce steam that

generates electricityPETROLEUM provide almost all of the

worlds transportation fuel


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This is the report.This is the report.

power plants present

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