New-energy-technologies(新能源介绍-全英文)

NewenergytechnologiesClass2Grade8ZhangZhijiaGroup©YouEnergyoverviewEnergy-Whocanprovidesomeformofphysicalormaterialmovement,collectivelyreferredtoasenergy.Formofenergy-Mechanicalenergy,soundenergy,lightenergy,electricalenergy,magneticenergy,chemicalenergy,biomassenergy...EvolutionofworldenergystructureStraw(fromthediscoveryoffire-18thcenturymedium-term)Coalera(18thcenturyMiddle-20thcenturymedium-term)Oilperiod(20thcenturymedium-now)EnergyissuesWorldenergyconsumptionisstilldominatedbyfossilfuels,andthelimitedreservesoffossilfuels.Astheworldpopulationincreases,energyshortagesearlyintheperiod.NewenergyNuclearenergySolarGeothermalenergyWindenergyOceanenergyBio-energyHydrogenenergyNuclearWhenchangesinthestructureofatomicnucleireleasesenergy-arecollectivelyreferredtoasnuclearpower,alsoknownastheInternationalAtomicEnergyAgency.Fromnuclearenergyprinciple1kilogramsofuraniumnuclearfissionoccurswhen,releasedenergyequivalentto2700tonsofburning.Nuclearpowerstationsuseuraniumfissionarethemain.NuclearreactorsNuclearreactorsiscontrollablechainreactiondevice,whichenablesthesmoothreleaseofnuclearenergy.Nuclearreactoriscontrolledbynuclearfuel,moderator,conditioningsystems,coolingsystems,andprotectivelayers.ProspectsfortheutilizationofnuclearenergyNuclearpowerplantwasfirstuseduranium-235,whichlaterexpandedtouranium-238,thorium-232,whichintheEarth'scrustcontainshuge,iffullyutilizedbyhumansforthousandsofyears.Seawatercontainslargeamountsofdeuterium,scientistsarestudyingthesettlementextractsdeuteriumfromseawaterasnuclearpower,freedofallnuclearenergyinthewater,enoughhumanityforbillionsofyears.Sotheidealsofnuclearenergyisanewenergy.SolarCandirectlyacceptandusesolarradiationontheplanet.SolarfeaturesSolarenergyinexhaustiblesource;Solarenergydoesnotproduceendangertheenvironmentpollutionduringtheconversionprocess;Solarenergyresourcesaroundtheworld,sporadically,culture,exploitation.Abouttwo-thirdsofsolarenergyresourcescouldbebetterused;Solarenergyfluxdensityislow,itsstrengthundertheinfluenceofvariousfactorsthatcannotbemaintainedconstant.GeothermalenergyIsarenewablethermalenergyfromdeepwithintheEarth.ItcomesfromtheEarth'smoltenmagmaandthedecayofradioactivematerials.DepthofgroundwatercirculationandaftermagmaintrusionfromaverydeepintotheEarth'scrust,tookheatfromdeepundergroundnearthesurface.Insomeplaces,naturalemissionofheatenergyofthesteamandhotwatertoreachtheground,considerablereservesofthisheat.ItisestimatedthattheheatfromtheEarth'sInteriortothegroundeachyearequivalentto100PW·h.WindenergyGlobalwindenergyisabout2.74x109MW,whichcanmakeuseofwindenergyforthe2x107MW,largerthantotalamountofwaterexploitationandutilizationonEarth10times.WindenergyadvantagesYunishuge;regeneration;broad;therewasnopollution.OceanenergyIsattachedtothewaterintheoceanrenewableenergy,includingtidalenergy,waveenergy,oceantemperature,seasalt,suchaspoorandoceancurrentenergy,broaderoffshoreenergyincludingwind,oceansurfaceoftheSunovertheseaandmarinelife,suchasmassandenergy.Oceanenergyamountedto76.6billion-kilowattintheoryrenewable.Developmentandutilizationofoceanenergyismainlyforpowergeneration,small-scalewavepowerandtidalpowertechnologyhasbeenapplied.HydrogenenergyHydrogenisthemostabundantelementintheuniverse,butnegligibleonEarthElementalhydrogencontent.Hydrogenbelongtosecondaryenergy,canonlybeobtainedbyotherenergytransformation.HydrogenadvantagesHeatofcombustionhigherperkgofhydrogencombustionheatabout3timesthatofgasoline,3.9timesofalcohol,cokefactorof4.5times.Theproductsofcombustioniswater,isthecleanestenergyintheworld.Thankyou©You