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时间:2019-02-03
《r134a在卧式螺旋管内单相流动和过冷流动沸腾换热特性研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、山东大学硕士学位论文3.5DataAcquisition⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..253.6OtherEquipment⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..263.6.1RefrigerantRecycling⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯263.6.2HalogenLeakDetector⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..263.6.3VacuumPump⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯263.6.4DCPowerSupply⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.273.
2、7HeatPreservationandSeals⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.273.8Summarv⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.28ChapterfourExperimentalDataReduction⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..294.1MassFlux⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.294.2HeatingPower⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..304.3HeatF1ux⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯304.4InnerW
3、allTemperatureofHelically—coiledTubes⋯⋯⋯⋯⋯⋯⋯⋯..314.5LocalHeatTransferCoe蛳cients⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯314.6TheInverseCalculationFormulaofSaturatedTemperature⋯⋯⋯⋯324.7UncertaintyAnalysis⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..32-4.8Summarv⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.33ChapterfiVeTheHeatTransferChar
4、acteristicsofSingle-phaseflowandSubcooledFlowBOiling⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..345.1Single-phaseFlowHeatTransferCharacteristicsofR134ainHorizontalHelically·coiledTubes⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯355.1.1DistributionofWallTemperature⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..355.1.2TheEffectofHeatF1uxonHeatFlux⋯⋯⋯⋯⋯⋯
5、⋯⋯⋯⋯⋯..375.1.3TheEffectofMassFluxonHeatFlux⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.385.1.4TheEff.ectofinletsubc001edtemperatureonHeatFlux⋯⋯..385.2Subc001edFlowBoilingHeatTransferCharacteristicsofR134ainHorizontalHelicallv.coiledTubes⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯405.2.1DistributionofWallTemperature⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..405
6、.2.2TheEffectofHeatFluxonHeatF1ux⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..425.2.3TheEffectofMassFluxonHeatFlux⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.435.2.4TheEffectofinletsubcooledtemperatureonHeatFlux⋯⋯..445.3Summarv⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.44V山东大学硕士学位论文ChaptersixConclusionsandtheFutureWOrk⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯466.1SummarytoPresentR
7、esearch⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.466.2InadequateandProspects⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.47References⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..49Acknowledgements⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.53PubIishedpaperformasterdegree⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.54VI山东大学硕士学位论文F:曰tI■Ez螺旋管因具有传热效率高、结构紧凑和污垢热阻小等优点,在高效蒸汽发生器和冷却器、核反应
8、堆、石油化工、航天航空、微电子器件冷却、先进燃料电池系统冷却以及制冷与低温技术等领域得到了非常广泛的应用。卧式螺旋管内过冷
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