学科分类
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37 个结果
  • 简介:Overthepast50addyears,outstandingachievementshavebeenmadeinthedevelopmentofruralsmallhydropower(SLIP)andelectrificationinChina.Bytheendof2003,42,221SHPplantswithatotalinstalledcapacityof28,489MWhavebeenconstructedandunderoperation.Halfofthecountry'sterritory,andonequarterofpopulationofthewholenationarenowaccessibletoSHP.

  • 标签: 小型水力发电 农村建设 中国 电气化建设
  • 简介:Inrecentyears,ChineseprivateinvestmentinSHP(smallhydropower)hasbeenboominglikemushroomsafterrain.Globally,manydevelopingcountrieshaveformulatedaseriesofincentivepoliciestoencouragethemobilizationofprivatecapitalforSHP,buttherecentenforcementisfarfrommeetingexpectation.ThisarticleoverviewsprivateenterprisesinvestinginSHPdomestically,analyzessimilaritiesanddifferencesbetweenChinaandinternationalcommunities,aswellasthecomparabilityandmutualreferentialvalues,andalsoexploressomeapproachesforimprovementFurthermore,thisarticlepresentsseveralparticularissuesinthisrespect,withahopetofurtherpromotethesounddevelopmentofSHPprivatelyfinanced.Attachedhereare2tablesand2figures.

  • 标签: 水力发电 中国 私营经济 国际组织 金融机制
  • 简介:OnOctober12,2000therepresentativesfromallsidesformallysignedattheacceptancetestforimplementingcascade1hydropowerstationonWokaRiverinTibet,whichmarksthatthesecondlargestoneofChina'snational62assisting-Tibetprojectsisfullysucceeded.

  • 标签: 西藏 水电站 水力发电 装机能力
  • 简介:AseveretyphoonUtor,occurringbetweenJuly3and8,2001,broughtheavyrainfall,strongwindandstormsurge.UtorwasresponsiblefortremendousdestructionandeconomiclossesinPhilippines,TaiwanandGuangdong.Anair-seamodelsystem(MM5andPrincetonOceanModel(POM))wasbuilttosimulatemeteorologicaldynamicsandoceancirculationintheSouthChinaSea(SCS).InthePOMtheoutputofMM5wasusedastheinputdata.Withanincreasednumberofverticallevels,ahigh-resolutionplanetaryboundarylayerschemeandupdatedlanduse/vegetationdata,theaccuracyofcomputingwind,temperatureandothermeteorologicalfieldsareimprovedinnearsurfaceandupperlevelsinMM5simulations.ThesimulatedtrajectoryandwindspeedofUtorareclosetotheobservedresults.ThesimulateddistributionofrainfallisaccordedwellwithmeasureddatainthePearlRiverDelta(PRD)area.AtdifferentmeteorologicalstationsinHongKong,thewind,temperatureandseasurfacepressurearewellsimulated.Thesimulatedoceansurfacecurrentandsurfacetemperaturefieldshaveanobviousrightward-biasedresponsetothetyphoonUtor,andthemaximumvelocityandthelowesttemperatureregionappearinthe30kmoftherightsideofthetyphoontrack.ThetyphoonUtorcouldmakethewater50munderthesurfaceoceanunwelltosurfaceandtheoceansurfacetemperaturedecreasebyabout2°C.

  • 标签: 台风过程 南海北部 南中国海 环流影响 表面温度场 普林斯顿海洋模式
  • 简介:这份报纸调查大小Mw=9.30作为马尼拉沟在华南海(SCS)正在成为最危险的海啸来源区域之一。用方程建模的非线性的浅水,表面举起,到达时间,最大的波浪振幅的空间分布和速度分发的时间系列被介绍。波浪和水流的特征被分析。数字结果显示波浪散布在的海啸的精力的那个大多数中央并且SCS的北方部分。近海在SCS附近的区域将被地震在马尼拉subduction地区产生的海啸水流显著地影响。广东省,海南岛,和台湾岛附近的最大的波浪振幅在海岸附近在测量地点的多数超过4m和速度超过2m/s。有高分辨率的嵌套的格子被用来在海南岛,台湾岛,和Lingding海湾上学习海啸的影响。有高危险风险的区域由于强壮的水流被识别。最后,在SCS的一个快海啸警告方法被开发并且讨论,它能在5min提供海啸警告信息。

  • 标签: 地震海啸 电流特性 振幅和 南海 马尼拉海沟 虚拟
  • 简介:TheresponseoftheSouthChinaSea(SCS)toTyphoonChanchu(2006)wasexaminedusingtheMM5andPOMmodel.InthePOMmodel,seasurfaceboundaryconditionswereforcedbythesimulationwindfieldfromMM5,thevelocityforcingwasintroducedintheeasternboundaryandthecomputationalschemesofheatfluxesatthesurfacewereintroduced.Comparisonwiththeobservationdatashowsthatthesimulatedresultsarereliable.IntheresponseprocessoftheSCStoTyphoonChanchu,theinfluenceoftheheatfluxesonthermalstructureoftheSCSwasregionallydifferent.Strongwindforcingwouldleadtoupwellingphenomenoninthelateralboundaryofdeepwaterbasin.Furthermore,theEkmanpumpingtheorywasusedtodiscusssubsurfaceupwellinganddownwellingphenomenonintyphoonforcedstage.

  • 标签: 南海台风 中国南海 散热结构 动态结构 珍珠 边界条件
  • 简介:Tomeetthedemandofislandresidentsontheelectricpowerfortheirdailylives,a30kWvibratingwavepowerstation,designedandbuiltbytheOceanicTechnologyResearchInstituteofChinaNationalBureauofOcean,ispresentlyconductedwithtestinJimocityofShangdongprovince,andacceptedbyChinaNationalBureauofOceanandChina'sAcademyofScience.

  • 标签: 中国 水电建设 技术测试 发电装置
  • 简介:TheRepublicofBeninissituatedonthecoastofWestAfrica,inthetropicalzone,betweentheEquatorandtheTropicsofCancer(betweenthe6°30and12°30parallelsofNorthernlatitudeand1°and30°40meridiansofEasternlongitude).Itisbordered,intheNorth,bytheriverNigerthatseparatesitfromtheRepublicofNiger,

  • 标签: 贝宁 小型水力发电 发电设备 2004年 发展中国家 技术合作
  • 简介:Avariablecoefficient,rotation-modifiedextendedKortweg-deVries(vReKdV)modelisappliedtothestudyoftheSouthChinaSea(SCS),withfocusontheeffectsofthehigh-order(cubic)nonlinearityandtherotationonthedisintegrationprocessoflarge-amplitude(170m)InternalSolitaryWaves(ISWs)andthesemi-diurnalinternaltidepropagatingfromthedeepbasinstationtotheslopeandshelfregionsinacontinuouslystratifiedsystem.Thenumericalsolutionsshowthatthehigh-ordernonlinearitysigni-ficantlyaffectsthewaveprofilebyincreasingthewaveamplitudeandthephasespeedinthesimulatedarea.ItisshownthattheinitialKdV-typeISWwilldecayfasterwhentherotationdispersionisconsidered,howeverthewaveprofiledoesnotchangesignificantlyandtherotationeffectisnotimportant.Thesimulationsofthesemi-diurnalinternaltideindicatethatthephaseofthewaveprofileisshiftedearlierwhentherotationeffectisincluded.Asolitarywavepacketemergesontheshelf,andthewavespeedisalsogreaterwhenconsideringtherotationdispersion.Inaddition,theeffectsofthebackgroundcurrentsarediscussedfurtherinthispaper.ItisfoundthatthebackgroundcurrentsgenerallychangethemagnitudeandoccasionallychangethesignofthenonlinearcoefficientsinthenorthernSCS.

  • 标签: 高阶非线性 内孤立波 中国南海 旋转 裂变 海上
  • 简介:AttheprimarystageofSHPdevelopment(1960s—1970s),woodenoriron-woodenturbinesmanufacturedbyagriculturalmachineryworksweremainlyadoptedinChina.Before1949,SHPequipmentwasgenerallyimportedduetolackofdomesticmanufacturingcapability.In1952,thefirstturbine-generatorunitof800kWcapacitywassuccessfullymadeinChina,

  • 标签: 中国 小型水力发电 杭州市 发电设备 人造涡轮机 农业机械
  • 简介:Twenty-fiveyearsagoAmerica'ssmallhydroelectricpowergenerationswerereactivatedbyprivate,municipal,andlocalgovernmentstoutilizetherenewableenergyfromthesmallhydrostiesavailable10,000existingdams,smallriversand/orstreams,andenergyrecoveryfacilitiesatmanywatertransmissionanddeliverysystems.

  • 标签: 小型水力发电 中国 电气化建设 美国 数字技术