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1、第４４卷第１期热力发电Vol?４４No?１２０１５年１月THERMALPOWERGENERATIONJan．２０１５??????????????????????????????????????????????????双轴跟踪槽式太阳能集热器性能试验马炎,陈海军,钱裕,王银峰,马婷婷,朱跃钊(南京工业大学机械与动力工程学院,江苏南京２１１８１６)[摘要]研制了１套聚光比为２４的双轴跟踪槽式太阳能集热器装置.利用TracePro软件建立了该集热器的光学效率模型,考察了单轴和双轴跟踪以及方位角和高度角跟踪误差对光学效率的影响,并对集热器的集热性能进行了试验.模拟
2、及试验结果表明:双轴跟踪下集热器光学效率达到０．８１３,年均光学效率比单轴东西和南北跟踪分别高１４．３％和４０．９％;高度角跟踪误差对光学效率影响较大,应将高度角跟踪误差控制在０．６以内;双轴跟踪可在降低单一跟踪轴精度条件下获得较高的光学效率;实测瞬时集热效率达到０．７７５,集热效率归一化线性良好,模拟推算集热效率与实测效率归一化曲线趋势一致,最大误差为１０．３％.因此,该集热器可用于分布式中小型集热系统.[关键词]槽式太阳能;双轴跟踪;集热器;光学效率;方位角;高度角;跟踪误差;集热效率[中图分类号]TK５１３[文献标识码]A[文章编号]１００２Ｇ３３６
3、４(２０１５)０１Ｇ００１９Ｇ０６[DOI编号]１０．３９６９/j．issn．１００２Ｇ３３６４．２０１５．０１．０１９PerformancetestofatwoＧaxistrackingparabolictroughsolarcollectorMAYan,CHENHaijun,QIANYu,WANGYinfeng,MATingting,ZHUYuezhao(SchoolofMechanicalandPowerEngineering,NanjingTechnologyUniversity,Nanjing２１１８１６,China)Abstract:Apara
4、bolictroughsolarcollector(PTC)withconcentrationratioof２４wasdeveloped．ByusingtheTraceProsoftware,anopticalmodelofthePTCwasbuilt．EffectsofsingleＧaxisandtwoＧaxistrackingmodes,azimuthandelevatingangletrackingerrorsontheopticalperformancewereinvestigated．ThermalperformanceofthePTCwasex
5、perimentallymeasuredaswell．Theresultsshowthat,theopticalefficiencyofthetwoＧaxistrackingwas０．８１３,anditsyearＧaveragevaluewas１４．３％and４０．９％higherthanthatoftheeastＧwesttrackingmodeandnorthＧsouthtrackingmode,respectively．TheopticalefficiencywasaffectＧedsignificantlybytheelevationangletr
6、ackingerrorswhichshouldbekeptbelow０．６°．HighopticaleffiＧciencycouldbeattainedbyusingtwoＧaxistrackingmodeeventhoughthetrackingprecisionofoneaxiswasdegraded．TherealＧtimeinstataneousthermalefficiencyofthePTCreached０．７７５．Inaddition,thelinearityofthenormalizedefficiencywasfavorable．Thec
7、urveofthecalculatedthermalefficiencyagreedwellwiththenormalizedinstantaneousefficiencycurvederivedfromtheexperimentaldataandthemaximumdifferＧencebetweenthemwas１０．３％．ThistypeofsolarcollectorcanbeappliedinmiddleＧsmallscalethermalcollectionsystems．Keywords:parabolictroughsolar,twoＧax
8、istracking,heatcollector,opticale
