资源描述：
《New energy technologies(新能源介绍 全英文)ppt课件.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、NewenergytechnologiesClass2Grade8ZhangZhijiaGroup©YouEnergyoverviewEnergy-Whocanprovidesomeformofphysicalormaterialmovement,collectivelyreferredtoasenergy.Formofenergy-Mechanicalenergy,soundenergy,lightenergy,electricalenergy,magneticenergy,chemicalenergy,biomassenergy...Evolutionofworlde
2、nergystructureStraw(fromthediscoveryoffire-18thcenturymedium-term)Coalera(18thcenturyMiddle-20thcenturymedium-term)Oilperiod(20thcenturymedium-now)EnergyissuesWorldenergyconsumptionisstilldominatedbyfossilfuels,andthelimitedreservesoffossilfuels.Astheworldpopulationincreases,energyshortag
3、esearlyintheperiod.NewenergyNuclearenergySolarGeothermalenergyWindenergyOceanenergyBio-energyHydrogenenergyNuclearWhenchangesinthestructureofatomicnucleireleasesenergy-arecollectivelyreferredtoasnuclearpower,alsoknownastheInternationalAtomicEnergyAgency.Fromnuclearenergyprinciple1kilogram
4、sofuraniumnuclearfissionoccurswhen,releasedenergyequivalentto2700tonsofburning.Nuclearpowerstationsuseuraniumfissionarethemain.NuclearreactorsNuclearreactorsiscontrollablechainreactiondevice,whichenablesthesmoothreleaseofnuclearenergy.Nuclearreactoriscontrolledbynuclearfuel,moderator,cond
5、itioningsystems,coolingsystems,andprotectivelayers.ProspectsfortheutilizationofnuclearenergyNuclearpowerplantwasfirstuseduranium-235,whichlaterexpandedtouranium-238,thorium-232,whichintheEarth'scrustcontainshuge,iffullyutilizedbyhumansforthousandsofyears.Seawatercontainslargeamountsofdeut
6、erium,scientistsarestudyingthesettlementextractsdeuteriumfromseawaterasnuclearpower,freedofallnuclearenergyinthewater,enoughhumanityforbillionsofyears.Sotheidealsofnuclearenergyisanewenergy.SolarCandirectlyacceptandusesolarradiationontheplanet.SolarfeaturesSolarenergyinexhaustiblesource;S
7、olarenergydoesnotproduceendangertheenvironmentpollutionduringtheconversionprocess;Solarenergyresourcesaroundtheworld,sporadically,culture,exploitation.Abouttwo-thirdsofsolarenergyresourcescouldbebetterused;Solarenergyfluxdensityislow,itsstrengthundertheinfluenceofva
