A multifunctional heat pipe sandwich panel structure

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1、Availableonlineatwww.sciencedirect.comInternationalJournalofHeatandMassTransfer51(2008)312–326www.elsevier.com/locate/ijhmtAmultifunctionalheatpipesandwichpanelstructurea,*bcaDouglasT.Queheillalt,GerardoCarbajal,G.P.Peterson,HaydnN.G.WadleyaUniversityofVirgi

2、nia,DepartmentofMaterialsScienceandEngineering,140ChemistryWay,P.O.Box400745,Charlottesville,VA22904,USAbUniversityofTurabo,SchoolofEngineering,P.O.Box3030,Gurabo00778,PuertoRicocUniversityofColoradoatBoulder,914Broadway,Boulder,CO80309,USAReceived27August20

3、06;receivedinrevisedform30March2007Availableonline18June2007AbstractAmultifunctionalsandwichpanelcombiningefficientstructuralloadsupportandthermalmanagementcharacteristicshasbeendesignedandexperimentallyassessed.Theconceptisbaseduponatruncated,squarehoneycombs

4、andwichstructure.Inclosedcellhon-eycombstructures,thetransportofheatfromonefacetotheotheroccursbyacombinationofconductionthroughthewebsandcon-vection/radiationwithinthecells.Here,muchmoreeffectiveheattransportisachievedbymultifunctionallyutilizingthecoreasahe

5、atpipesandwichpanel.Itsinteriorconsistsofa6061aluminumtruncated-squarehoneycombcorecoveredwithastochasticopen-cellnickelfoamwick.Anelectrolessnickelplatingbarrierlayerinhibitedthechemicalreactionbetweenthedeionizedwaterworkingfluidandthealuminumstructure,reta

6、rdingthegenerationofnon-condensablehydrogengas.Athermodynamicmodelwasusedtoguidethedesignoftheheatpipesandwichpanel.Wedescribetheresultsofaseriesofexperimentsthatvalidatetheoperationalprincipleofthemultifunctionalheatpipesandwichpanelandcharacterizeitstransi

7、entresponsetoanintenselocalizedheatsource.Thesystemsmea-suredthermalresponsetoalocalizedheatsourceagreeswellwiththatpredictedbyafinitedifferencemethodmodelusedtopredictthethermalresponse.Ó2007ElsevierLtd.Allrightsreserved.Keywords:Cellularmaterial;Heatpipe;Hon

8、eycomb;Multifunctionalstructures1.IntroductionLatticestructurespossessverylowflowresistancepath-wayswithintheircoreregion[12–14].WhenfabricatedRecentresearchindicatesthatlatticetrusssandwichfromh