瞬态热线法测量液体导热系数的分析

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1、浙江大学硕士学位论文AbstraetAbstractMoreandmorereliabledataofthermalconductivityofliquidforchemicalengineeringdesignwillbeneeded．Meanwhile，theresearchofmechanismofthermalconductivityofliquidalsodependsonitsexperimentaldata．However,theexpedmentaldataofthermalconductivityofliquid，especiallyformixturesandothe

2、rcomplexsystems，alelimited．Therefore，thedevelopmentofareliableapparatusformeasuringthermalconductivityofliquidisessential．Basedonthestate—of-artreviewformeasuringthermalconductivityofliquid，thetransienthotwiremethodWaschoseninthisthesis．Throughdesign,assembly,adjusting，anewtransienthotwireapparat

3、usWasdevelopedtomeasurethethermalconductivityofliquid．Intheapparatus，naturalconvectionwasavoidedintheeffectiveduration，signalnoiselevelwassuppressedthrougheffectivedenoising，andautomaticacquisitionforsignalwasalsorealized．TheapparatusWascalibratedbytheliteraturedata,andthereliabilityoftheapparatu

4、sWasconfirmed．Theerroranalysisfortheapparatuswasgivenaswell，andmaximumuncertaintyWas2．39％．Duetotheextensiveapplicationofmethylethylketoxime—methylethylketoneandmethylethylketoxime-聆一hexanesystemsintheproductionrelatedtomethyethylketoxime，theirthermalconductivityweremeasuredintherangefrom288Kto328

5、Kforfivecompositionsatatmosphericpressure．Thedependencesofthermalconductivityontemperatureandcompositionwerediscussed．Inaddition，theexperimentaldatawerecorrelated，andmaximumdeviationswere0．35％andO．84％，respectively,averageabsolutedeviationswere0．13％and0．36％，respectively．Thermalconductivityofaqueou

6、sDMSOsolution,whichWaswidelystudiedinthemoleculardynamicsimulationasahi．ghassociatingsystem，weremeasuredintherangeof296K·326Kforninecompositionsatatmosphericpressure．ItisfoundthattemperaturedependenceofthermalconductivitymakesasharpchangeatDMSOmolefractionrangefrom0．48to0．675．Keywords：thermalcond

7、uctivity,transienthotwiremethod，measurement，III浙江大学硕士学篁丝壅垒!竺型denoising，methylethylketoxime，DMSOIV浙江大学硕士学位论文目录!改谢⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯I摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．IIAbstract⋯⋯⋯⋯⋯⋯⋯⋯