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放热processina氢化镁的热分析研究
Compared withsensibleandlatentheatstorage,thermochemicalheatstoragehastheadvantagesofhigh
storagecapacity,lowstorageloss,etc.,whichmakeitbecomeamostpromisingcandidateforheat
storage.Amongnumerousmaterialsusedforthermochemicalheatstorage,magnesiumbasedmaterials
are abundant,inexpensiveandhaveahighstoragedensity,thereforetheyhaveattractedextensive
investigations.Inthispaperatwodimensionalmathematicalmodelfortheheatreleasingprocessofthe
Mg/MgH2 systemwasestablishedtostudythetransientheatandmasstransferprocess.Theresultsshow
that theeffectiveheattransferisthekeyfactorinfluencing theoutputpower.Withtheadditionofmetal
foams, theeffectivethermalconductivityhasasignificant promotion,andtherebyshortening
the reactiontimeandimprovingtheoutputpower.Aparametricstudywasconductedtoexamine
the optimalconditionsforthehighestoutputpowerandasensitivityanalysiswasperformedtoevaluate
the variousfactorsinfluencing thereactiontime.
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