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Tecnologia
 

Tecnologia

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    Tecnologia Tecnologia Presentation Transcript

    • ENERGYAntonio López and Paula Moralo
    • INDEX● Energy definition● Types of energy● Energy sources● Renewable energy● Non-renewable energy● Types of power stations● Wind turbine
    • ENERGY DEFINITION The energy isthe capacity of an object to doing a work.
    • TYPES OF ENERGY
    • MECHANICAL ENERGYThere are two types ofmechanical energy:Kinetic energy: is the energy thatobjects have when they are inmotion. For example the windmill.Potential energy: is the energythat the objects have when theyare moved from their stableposition of equilibrium. Forexample an arch.
    • ELECTRICAL ENERGYIt is the energy associated with anelectrical current. For examplehigh voltage network.
    • ELECTROMAGNETIC ENERGYThis energy istransported byelectromagneticwaves.For example atelevision or aradio.
    • SOUND ENERGYIt is associated withsounds waves thatare transmittedthrough vibrations.For example amegaphone.
    • CHEMICAL ENERGYChemical energy isstored in substances. Itcan be realasedorabsorbed duringchemical processes.For exampe a battery.
    • NUCLEAR ENERGYIts contained in thenuclei of atoms. Itrealised by a nuclearreaction. Also it canbe called atomicenergy.For example anuclear power plant.
    • THERMAL OR CALORIFICENERGYIt comes from thevibration of particlesin matter.For example athermometer.
    • ENERGYSOURCES
    • ENERGY SOURCESEnergy sources are natural resources that providesdifferent formes of energy.This energy is transformedfor especific uses.Energy sources are classified into renewable and non-renewable sources.
    • NON-RENEWABLESOURCESNon-renwable energy sources come fromnatural resources that are limited and we onlycan use them once. The main sources ofenergy that we use are:-Nuclear energy-Fosil fuels -
    • NUCLEAR ENERGYProduction: this energy is storedin the nuclei of atoms, it isrealised in the nuclear reactionthat occurs in certain atoms.There are two kinds-Nuclear fusion: when two lightnuclei joints two form a heviernucleus.-Nuclear fission: When a heavynucleus is divided into twolighter nuclei by bombarding itwith neutrons.Transformation: nuclear powerstations use fission energy.
    • COALExtraction: there are twomethods for extracting it:-Open cast mines when the coalis close to the surface.-Underground mines when themineral is burried deep belowthe surface.Transport: by sea, by land andby road.Uses:-For energy: to generateelectricity.Nowadays: For central heatingsystemsIn the past: For street lighting
    • PETROLEUMIt is formed from the buriedremains of plants andanimals that havedescomposed.Extracting: From land orunder the sea, using pumpsand the extraxted petroleumcontains salt water, rock,mud and gas, so it is thenpurified.Storage and transport:-Oil tankers-Oil pipelines
    • NATURAL GASIt is a mixture of gases formed fromdescomposed plants and animals.Extraction: It is expenses to extract and it isextrated by drilling.Storage and transport:1.Natural gas is transported from gas fieldsby gas piperlines to a liquefaction plant2. It is convert into liquid.3.It is transformed in LNG carries.4.Then its returned to a gaseus state and it istransported once again through gaspiperlines.Uses: It is used in industry and in homes toproduce thermal energy and in thermalpower station to obtain elecrtical energy.
    • RENEWABLE ENERGYIt comes from unlimited natural resources.There are differnet types:-Hydraulic energy-Solar energy-Wiind energy-Marine energy-Geothermal energy-Biomass energy-Energy produced from municipal solid waste
    • HYDRAULIC ENERGYThis is the mechanical energyproduced by the movement of water.Production: We build dams to storeriver water.Transportation: Mos hydraulic energyis used to produce electricicy inhydroelectric power stations.Advantages: It is cheap, clean andnon-pollutid.Desadvantages: Building powerstation is very expensive, if the damsbreaks, there is a risk of acatastrophe...
    • SOLAR ENERGYIt is capable of taking advantage oflight to convert it into chemicalenergy. Solar energy is produced bythermonuclear radiation frominside the sun.Advantages: It is clean, big powerstatioons are not needed and itśunlimited.Disadvantages: its variable sourceof energy, solar pannels are veryexpensive.
    • WIND ENERGYIt has used since ancient times tomove sailing ships.Production and transportation: Itis produced by the effect ofradiation on the atmosphere. Thewinds kinetic energy isconverted into electricity.Advantages: It is unlimited andnon-polluting, the cost ofmanteining at wind farms is low.Desadvanteges: It is a variablesource of energy, wind turbinesproduce noise pollution...
    • MARINE ENERGYThere are several meansfor generating energyfrom the sea:Tidal energy can beextracted from the tides.
    • POWER STATIONSA power station is an industrial facility for thegeneration of electric power.At the center of nearly all power stations is agenerator, a rotating machine that convertsmechanical power into electrical power.There are many types:-Nuclear Power Station-Thermal Power Station-Solar Power Station-Heolic Power Station-Hidraulic Power Station
    • NUCLEAR POWERSTATIONA nuclear powerplant is a thermalpower station inwhich the heatsource is one or morenuclear reactors.
    • THERMAL POWER STATIONA thermal powerstation is a powerplant in whichthe primemover is steam driven.
    • HYDRAULIC POWERSTATIONIt´s generated by the pressure of falling water.
    • SOLAR POWERSTATIONIt´s where the light is convertedinto chemical energy.
    • WIND POWERSTATIONIt´s where the wind istransformed into energy.
    • WIND TURBINESWind turbines have long producedrenewable energy but a Frenchengineering firm has discovered anothereco-purpose for the towering structures.One turbine can produce up to 1,000 litersof water every day, depending on the levelof humidity, temperature anwind speeds.
    • One turbine can produce up to1,000 liters of water every day,depending on the level ofhumidity, temperature anwind speeds.
    • REFERENCEwww.wikipedia.orgwww.tecno12-18.comtocnologies 1ºESO
    • BYE!