基于TEG的熱能發(fā)電關鍵技術研究.pdf

1、長春理工大學碩士學位論文基于TEG的熱能發(fā)電關鍵技術研究姓名：趙青義申請學位級別：碩士專業(yè)：物理電子學指導教師：石曉光20100301ABSTRACTTEGisasemiconductorthermoelectricgeneratorthatcanconvertheatintoelectricpowerunderthetemperaturedifferencesIthasmanyattractivefeatures，suchasnomo

2、vingpartsandreducedmaintenance，andCanbedesignedintoanumberofshapesformanyspecificapplicationsWiththeautonomoussensorsystemsplayanincreasingroleinmanyareas，distributedsensornetworksenablemuchofapplicationsforTEGIn位paper，a

3、nanalysisofaTEGispresentedandexpressionsderivedforthethermodynamicefficiency，optimumefficiency，maximumpoweroutput，andmaximumpoweroutputperunitareaAnewanalyticalheatconductionmodelforTEGWasbuiltThemodelincludestheThomsonh

4、eat，thePeltierheat，Jouleheat，aswellasallthermalandelectricalresistancesGeometryoptimizationiSpresentedManyrecentadvancesinTEGhavefocusedonthenanoscaleengineeringofmaterialsforhigherfigureofmerit(Z)Athermoelectricgenerato

5、rusingthesethinfilmmaterialsCanpresentnewchallengesduetoitsinherentlylargetemperaturegradient，butalsocorrespondinglylargergeneratedpoweriftheheatcanbemanagedInsuchcasesperformanceisexpectedtobelimitedasmuchbytheheatsinka

6、sbyintrinsicmaterialpropertiesNewcriteriaforoptimizingthegeneratedpowerdensityofdevicesinthisregimearediscussedKeywords：thermoelectricgeneratorthermodynamicefficiencypowerdensitythermalresistanceheattransfercoefficientII