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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.