A thermal model for photovoltaic panels under varying atmospheric conditions.pdf

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1、AppliedThermalEngineering30(2010)1488e1495ContentslistsavailableatScienceDirectAppliedThermalEngineeringjournalhomepage:www.elsevier.com/locate/apthermengAthermalmodelforphotovoltaicpanelsundervaryingatmosphericconditionsS.Armstrong*,W.G.HurleyPowerElectronicsResearchCentre,ElectricalandEle

2、ctronicEngineering,NationalUniversityofIreland,Galway,IrelandarticleinfoabstractArticlehistory:Theresponseofthephotovoltaic(PV)paneltemperatureisdynamicwithrespecttothechangesintheReceived1June2009incomingsolarradiation.Duringperiodsofrapidlychangingconditions,asteadystatemodeloftheAccepted

3、5March2010operatingtemperaturecannotbejustifiedbecausetheresponsetimeofthePVpaneltemperatureAvailableonline12March2010becomessignificantduetoitslargethermalmass.Therefore,itisofinteresttodeterminethethermalresponsetimeofthePVpanel.PreviousattemptstodeterminethethermalresponsetimehaveusedKeywo

4、rds:indoormeasurements,controllingthewindflowoverthesurfaceofthepanelwithfansorconductingPhotovoltaictheexperimentsindarknesstoavoidradiativeheatlosseffects.Inrealoperatingconditions,theeffectiveExternalconvectivelossesPVpaneltemperatureissubjectedtorandomlyvaryingambienttemperatureandfluctua

5、tingwindTemperatureevolutionspeedsanddirections;parametersthatarenotreplicatedincontrolled,indoorexperiments.Anewthermalmodelisproposedthatincorporatesatmosphericconditions;effectsofPVpanelmaterialcompositionandmountingstructure.Experimentalresultsarepresentedwhichverifythethermalbehaviouro

6、faphotovoltaicpanelforlowtostrongwinds.Ó2010ElsevierLtd.Allrightsreserved.1.IntroductionthermalmodelmaybeusedtodeterminethespeedofresponseofthePVpaneltochanginginputconditions.ThePVpaneloperatingtemperatureisdependentuponmanyThebehaviourofthePVpanelasathermalmasshasbeenfactors;solarradiatio

7、n,ambienttemperature,windspeedanddescribedintheliterature[4e7].In[4,5],thepanelismodelledasdirection,panelmaterialcomposition,andmountingstructure.ForalumpedthermalheatcapacitymodeltopredicttheoperatingatypicalcommercialPVpanel,aproportionofthesolarradia