《SolarpanelPhotovoltaicpanel.docx》由会员分享，可在线阅读，更多相关《SolarpanelPhotovoltaicpanel.docx（8页珍藏版）》请在三一办公上搜索。
1、SolarpanelPhotovoltaicpanel目录Principleofpowergeneration2Materials2Advantagesanddisadvantages5Appliciation6Summary8Reference9PrincipleofpowergenerationThebasicprincipleofphotovoltaicpowergenerationisthephotovoltaiceffect.Whenaphotonhitsametal,itsenergycanbeabsorbedbyanelectroninthemetal,andtheenergya
2、bsorbedbytheelectronisenoughtoovercometheinternalgravityofthemetaltodoworkandescapefromthemetalsurfaceasaphotoelectron.Photogeneratingvolteffect,referredtoasphotovoltaiceffect.Referstothelightcausedbyunevensemiconductororsemiconductorandmetalbondingbetweendifferentpartsofthephenomenonofpotentialdiff
3、erence.Firstly,photons(lightwaves)areconvertedintoelectrons,andlightenergyisconvertedintoelectricenergy.Thesecondistheprocessofformingvoltage.Withvoltage,itislikebuildingadam,andifthetwoareconnected,acircuitofcurrentwillbeformed.Photovoltaicpowergeneration,itsbasicprincipleisthephotovoltaiceffect.Th
4、esolarexpert'sjobistofinishthejobofmakingthevoltage.Solarcells,whichconvertelectricMaterialsPolysiliconsolarcells.TheproductionprocessofpolycrystallinesiliconsolarcellisSimilartothatofmonocrystallinesiliconsolarcell,butthephotoelectricconversionefficiencyofpolycrystallinesiliconsolarcellismuchl
5、ower,itsphotoelectricconversionefficiencyisabout12%(Theworld'shighestefficiencypolycrystallinesiIiconsolarcellwith14.8%efficiencylaunchedbySharpinJapanonJuly1,2004).Intermsofproductioncost,itischeaperthanmonocrystallinesiliconsolarcells,thematerialissimpletomanufacture,savespowerconsumption,and
6、thetotalproductioncostislow,soithasbeendevelopedinlargequantities.Inaddition,theservicelifeofpolysiliconsolarcellsisshorterthanthatofmonocrystallinesolarcells.Theproductionofpolysiliconsolarcellsneedstoconsumealargenumberofhighpuritysiliconmaterials,andthemanufacturingprocessofthesematerialsiscompli
7、cated,andthepowerconsumptionisveryhigh,whichhasexceeMonocrystallinesiliconsolarcell.Atpresent,thephotoelectricconversionefficiencyofsinglecrystalsiliconsolarcellsisabout15%,withthehighestreaching24%,whichisthehighestphotoelectricconversionefficiencyofallkindsofsolarcellsatpresent.TheteChnologyisalso
8、themostsophisticatedbutissoexpensivetoproducethatitisnotyetwidelyandwidelyusedinlargenumbers.Asmonocrystallinesiliconisgenerallypackagedwithtemperedglassandwaterproofresin,itisrobustanddurable,anditsservicelifecangenerallyreach15years,upto25years.Singlecrystalsiliconsolarcellisoneofthemostrapidlydev
9、elopedsolarcells,itsconstructionandproductionprocesshasbeenfinalized,productshavebeenwidelyusedinspaceandground.Thesolarcellismadeofhighpuritysinglecrystalsiliconrod.Inordertoreducetheproductioncost,solarcellsandothergroundapplicationsarenowusingsolargradesinglecrystalsiliconrods,materialperformance
10、indicatorshavebeenrelaxed.CharacteristicsCrystallinesiliconisthemostimportantphotovoltaicmaterial,whichischaracterizedbygrayblacksolidwithmetallicluster,highmeltingpoint,highhardness,brittleness,andlowchemicalactivityatroomtemperature.Itsmarketshareismorethan90%,anditwillstillbethemainstreammaterial
11、ofsolarceIlsforalongtimeinthefuture.Monocrystallinesiliconhasthephysicalpropertiesofquasimetalsandweakconductivity.Itsconductivityincreaseswiththeincreaseoftemperature,andithasremarkablesemiconductivity.Ultra-puremonocrystallinesiliconisanintrinsicsemiconductor.Ap-typesiliconsemiconductorcanbeformed
12、bydopingatraceamountofIIIAgroupelements,suchasboron,intoultrapuresinglecrystalsilicon.Forexample,theadditionofatraceamountofVAelements,suchasphosphorusorarsenicjcanalsoimprovetheconductivityandformn-typesiliconsemiconductors.AdvantagesanddisadvantagesAdvantagesNodangerofdepletion;safeandreliable,non
13、oise,nopollutionemissions,absoluteclean;notrestrictedbythedistributionofresources,cantakeadvantageoftheadvantagesofthebuildingroof;forexample,inareaswithoutelectricity,aswellasinareaswithcomplexterrain;localpowergenerationwithouttheneedforfuelconsumptionandtransmissionlines;highenergyquality;andemot
14、ionalacceptancebyusers;theconstructioncycleisshort,andthetimetakentoobtainenergyisshort.DisadvantagesTheproductionofsolarpanelshasthecharacteristicsofhighpollution,highenergyconsumption,theradiationofenergydistributiondensityissmall,thatistooccupyahugearea;theenergyobtainedisrelatedtoweatherconditio
15、nssuchasfourseasons,dayandnight,andsunnyandcloudy;atpresent,comparedwiththermalpowergeneration,thegenerationopportunitycostishigh;photovoltaicpanelmanufacturingprocessisnotenvironmentallyfriendly.AppliciationFisherlightcomplementaryphotovoltaicpowergenerationFishinglightcomplementary,asthenameimplie
16、s,needfishing,andlighf.Fisheryandlightcomplementaryistoinstallphotovoltaicpowergenerationpanelsonthefisheryaquaculture,andconductaquacultureworkunderthephotovoltaicpowergenerationpanels.Thisisthenewphotovoltaicapplicationmodeofabovecangenerateelectricity,belowcanbefarmed.Thebenefitsofsuchafarmingmod
17、elareenormous.Fromthepointofviewofthefarmers,thephotovoltaicpanelscaneffectivelyblockoutthesun'srays,therebyloweringthewatertemperature,especiallyinhotsummer,theshieldingeffectofphotovoltaicpanelscanprovideaconstanttemperatureenvironmentforlivingthingsinthewater.Afterthetemperatureisreducedands
18、tabilized,thesurvivalrateoffishandshrimpseedlingswillgraduallyincrease,andtheincomeoftheCulturatorcanalsobesignificantlyimproved.Secondly,thephotovoltaicpowergenerationpaneliserectedonthewatersurface,andthebreedercanusethephotovoltaicpowergenerationpaneltogenerateeIectricityforthefarm,whichreducesth
19、epowerconsumptionandthebreedingcosttoacertainextent.Farmerscanusetherestofthemoneytoexpandthescaleorvariety,andfurthergaingreaterprofits.Ifyoucan'trunoutofeIectricity,youcanstillresellit.ItcanbesaidthatFisheryLight.Agro-opticalcomplementaryphotovoltaicpowergenerationAgroopticalcomplementation,a
20、lsocalledphotovoltaicagriculture,isthefeatureofusingsolarphotovoltaicpowergenerationwithoutpollutionandzeroemission,whichisorganicallycombinedwithhightechgreenhouse(includingagriculturalplantinggreenhouseandbreedinggreenhouse).Aphotovoltaicsolarpowergenerationdeviceislaidonpartorallofthesunnysurface
21、softhegreenhouse,whichnotonlyhasthepowergenerationcapacity,butalsocanprovideasuitablegrowingenvironmentforcrops,ediblefungiandanimalhusbandry.Inordertocreatebettereconomicandsocialbenefits.Therearemainlyphotovoltaicagriculturalplantinggreenhouse,photovoltaicbreedinggreenhouseandotherseveralmodes.The
22、developmentofphotovoltaicagricultureleadsthetrendofIowcarbonandenvironmentfriendlygreenenergyandrepresentsthenewdirectionofagr!culturaldevelopmentinthefuture.Itnotonlysowsgreenorganicagriculture,butalsoharvestscleanenergy.Ithasgreatlyimprovedthelandutilizationratio,realizedthemultiwinoffarmers,enter
23、prisesandgovernmentsbyexploitingthepotentialresourcesofgreenhouse,andthedevelopmentofphotovoltaicsolargreenhousewillsurelysetoffthesecondrevolutioninthehistoryofphotovoltaicagricultureinChina.SummaryThesunisanaturalsourceofenergy.EverylivingthingonEarthowesitsabilitytofunction,andevenitsexistence,to
24、theenergythatcomesdirectlyorindirectlyfromthesun.Ourearthisalmostahundredmillionmilesfromthesun.Itinterceptsanincredibleamountofradiation(aboutthreetenthsofamillion),atinyamountofenergythatisactually100,000timesgreaterthanthecurrentgenerationcapacityoftheentireworld.Atpresent,thewholeworld,especiall
25、ytheindustrializedcountries,begintofeeltheenergyshortage,therefore,peoplebegintoturntothesolarenergytosolvetheenergycrisis.ReferenceTranslatedbyNorbertLeshnerZhangLietal.,DongWuminSchool.2004.TechnicalDesignGuideforArchitects-Heating,Cooling,AirConditioningM.SecondEdition.Beijing:ChinaConstructionIn
26、dustryPress,174-182.GreenBuildingResearchCenter,Xi'anUniversityofArchitectureandTechnology1999.GreenBuildingM.Beijing:ChinaPlanningPress,223-224.HeWei,JiJie.2003.TheoreticalStudyontheEffectofPhotovoltaicBuildingIntegrationonBuildingEnergyEfficiencyJ.HVAC.33(6):8-11.MaShusheng.2003.BuildingIntegratedSolarPhotovoltaic(BIPV)TechnoIogyandChina.SolarenergyJ6:18-19.YuanXudong,WeiXiangyuan.2001.ResearchonPhotovoltaic-ArchitectureIntegrationJ.NewConstruction.2:67-69.
