管内R32流动冷凝换热特性的研究-豆柴文库

您所在位置：网站首页 / 管内R32流动冷凝换热特性的研究.docx / 文档详情

在线预览结束，喜欢就下载吧，查找使用更方便

5 金币

下载文档

/ 2

下载提示

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

文本预览

管内R32流动冷凝换热特性的研究
Title:InvestigationofFlowingCondensationHeatTransferCharacteristicsofR32inTubes
Abstract:
ThepresentstudyaimstoinvestigatetheflowcondensationheattransfercharacteristicsofR32,awidelyusedrefrigerant,intubes.Theheattransferperformanceduringcondensationisofgreatsignificanceinvariousheattransferapplicationssuchasrefrigeration,airconditioning,andheatexchangers.Inthisstudy,theexperimentalsetupisdesignedtosimulatethepracticaloperatingconditionsandasystematicexperimentalinvestigationisconductedtoobtaindataontheheattransfercoefficientsandpressuredropduringR32condensation.Theresultsobtainedfromthisstudywillcontributetoabetterunderstandingoftheheattransfermechanismsduringcondensationandenhancethedesignandoptimizationofheatexchangers.
Introduction:
Flowingcondensationheattransferisacommonphenomenonencounteredinvariousindustrialandresidentialapplications,suchasrefrigeration,airconditioning,andheatexchangers.Heattransferduringcondensationisacomplexprocessthatdependsonvariousfactorssuchasfluidproperties,flowconditions,andgeometricalparameters.Therefore,itisessentialtostudythecondensationcharacteristicsofdifferentrefrigerantstoimprovethedesignandperformanceofheattransferequipment.
R32isahydrofluorocarbon(HFC)refrigerantwithlowglobalwarmingpotential(GWP)andisconsideredasapotentialreplacementforhigh-GWPrefrigerantssuchasR22andR410A.However,thecondensationcharacteristicsofR32inflowingconditionsarestillnotfullyunderstood.Therefore,thisstudyaimstoinvestigatetheflowcondensationheattransfercharacteristicsofR32toprovidevaluableinsightsintoitsbehaviorandpromoteitsapplicationinheattransferequipment.
ExperimentalSetup:
Theexperimentalsetupconsistsofaverticaltestsectionwithasmoothcoppertube.R32ispassedthroughthetestsection,andtheheattransferoccursthroughcondensation.Theheattransfercoefficientandpressuredroparemeasuredatdifferentoperatingconditions.Thetestsectionisinsulatedtominimizeheatlosses,andtheoperatingparameterssuchasmassflowrate,saturationtemperature,andtubediameterareva