太阳能作文
详细内容
篇一:《SolarEnergy太阳能英语作文》
SolarEnergy
Name:Isabella
School:InnerMongoliaUniversityofScienceandTechnologyAcademicadviser:AndrewMilanekDate:2013/12/08{太阳能作文}.{太阳能作文}.
Imagineaworldwheresunlightcanbecapturedtoproduceelectricityanywhere,onanysurface.Themakersofthin-filmflexiblesolarcellsimagihatworldtoo.Butabigproblemhasbeentheamountofsiliconneededtoharvestalittlesunshine.Now,researchersatCaltechsaythey’vedesignedadevicethatgetsparablesolarabsorptionwhileusingjustonepercentofthesiliconperunitareathatcurrentsolarcellsneed.TheworkwaspublishedinthejournalNatureMaterials.
Inrecentyears,thesolarenergyforthebenefitofmankind'stechnologyindustryhasbeemoreandmoredeveloped.Humanhasalonghistorytousethesolarenergy.“Chinaasearlyastwothousandyearsago,duringtheWarringStatesperiod,knowtheuseoffoursteelmirrortofocussunlightignition;useofsolarenergytodryagriculturalproducts.”Thedevelopmentofmodern,solarenergyhasbeeincreasinglywidespreaduse,whichincludestheuseofsolarenergysolarthermal,solarphotovoltaic.What’smoresolarenergywasusedbyphotochemicalandsoon.Peopleusethesolarenergyintwoways:thephotothermalconversionandthephotoelectrionversion.
Atpresent,manyscientistsholdoptimisticattitudeontheprospectofthesolarenergy.Therearethreereasons:(1)General:thesunshinesontheearth,whetherlandorsea,regardlessofthemountainsorislands,arefoundeverywhere,directthedevelopmentandutilization,andexploitationandtransportationneedless.(2)Sound:thedevelopmentandutilizationofsolarenergywillnotpollutetheenvironment,itisoneofthemostcleanenergy。Fortoday'sincreasinglyseriousenvironmentalpollution,itisextremelyvaluable.(3)Thegreatamount:“thesolarradiationwhichreachtheearth'ssurfaceeachyearabout130trilliontstandardcoal.Thereforethesolarenergyhasthelargestamountamongnaturesources.”(4)constancy:aordingtoestimationatpresentabouttherateofnuclearenergyproducedthesun,theamountofhydrogenstorageissufficienttomaintainhumanforthetensofbillionsofyears,andtheearthlifeisonlyaboutbillionsofyears.Inthissense,thesolarenergycanbeinexhaustible.{太阳能作文}.{太阳能作文}.
Ontheotherhand,wecan’tignorethedisadvantagesofsolarenergy.First,solarhasdispersion.Althoughthereisthelargeamountofscattersolarradiationreachingtheearth'ssurface,energydensityislow.Secondsolarhasinstability.duetodiurnal,season,geographicallatitude,altituderestrictionsandothernaturalconditions,andclear,Yin,cloud,rainandotherrandomfactors,solarirradiancereachingacertainsurfaceiscontinuousandveryunstable,whichincreasedthedifficultyforthesolarenergylarge-scaleapplications.Third,solarhasthelowefficiencyandhighcost.“Thecurrentdevelopmentlevelofsolarenergyutilization,isfeasibleintheoryandtechnologyismaturetoo.Butsomeofthesolarenergyutilizationdevice,becauseofthelimitationbothofefficiencyandcost,ingeneral,can'tpetewithconventionalenergy.Inthefutureaconsiderableperiodoftime,thefurtherdevelopmentofsolarenergyutilization,mainlyfacesmuchdifficultyforeconomionstraints.”
Inaword,ifwecansolvethesedifficultproblems,humanwilltakebetteruseofthesolarenergy.
References{太阳能作文}.{太阳能作文}.
1.《》.北京:,1996。
2、毅.《新能源与可再生能源利用技术》.北京:,2006。3.《能源》.北京:,2000。
篇二:《太阳能电动风车作文400字》星期五,我和爸爸一起拼太阳能玩具,它可以拼成太阳能风车、太阳能旋转飞机、太阳能飞机、太阳能小狗和太阳能汽车。我这次拼的是太阳能风车,首先组装太阳能小电机,要特别小心,因为有电线。电机拼好了,接着安装太阳能电池板,然后再用电线将它们连起来,放到太阳下就可以转了,再加上一个扇叶,安上去后太阳能风车就拼好了。那天我不能试,因为是晚上,白天才能试。白天到了,爸爸比我先起床,先去试一试。我过去的时候,它刚刚开始转,而且转得比较快。我对太阳能风车做了一个实验,分别将太阳能电池板放在窗户玻璃后、用手挡住阳光、放在汽车前玻璃后,还用放大镜集中阳光于太阳能电池板上。实验结果是:挡住阳光时风车不转,放在窗户玻璃后最慢,放在汽车玻璃后较快,用放大镜集中阳光则最快。下午,去游泳的时候我也把小风车带上了,下午阳光很强,风车转得非常快。我游完泳回家后,把它改装成太阳能飞机,如果想知道太阳能飞机怎么玩,请听下回分解。武汉大方学校二年级:李字恒