简介:回转式空气预热器是高参数大容量电站锅炉广泛采用的尾部换热设备,漏风率高是该类设备的致命缺点,降低了电厂的经济效益.文章提出了高参数机组回转式空气预热器漏风分布的综合模型,其中包含2个子模型:一个是基于压降机理建立的质量守恒和能量守恒模型;另一个是基于流体网络建立的空气预热器内部漏风分布模型.文中以某电厂300MW机组尾部换热设备为仿真对象,求解回转式空气预热器的径向、周向和轴向的漏风分布,得出轴向漏风和径向漏风可以相似化处理的结论.所以在加装径向密封装置时也应该对轴向密封加以改造,这对回转式空气预热器的状态检修和运行维护具有指导意义.
简介:A3Dcontact-frictionmodelforpoundingatbridgesduringearthquakes;ANovelConceptforFaultCurrentTolerableContactors;Astudyofsurfacechangeforelectromagneticcontactor;Anexperimentalstudyabouteffectoffarinfraredradiantceramicsonefficientmethanefermentation;DynamicanalysisandsimulationofelectromagneticcontactorswithACsolenoids;DynamicsimulationofmagneticcontactorswithACsolcnoids;
简介:""""Sensorless""""Controlof4-Quadrant-RectifiersforVoltageSourceInverters(VSI);1kV4H-SiCJBSRectifiersFabricatedUsinganAIMCappedAnneal;1MHzSelf-DrivenZVSFull-BridgeConverterfor48VPowerPods;3-levelthreephasesoft-switchingPWMrectifierwithsingleauxiliaryresonantcommutatedsnubbercircuit;3-phaseconvertermodelingforunbalancedradialsystems;A100kWHigh-PerformancePWMRectifierWithaZCTSoft-SwitchingTechnique;
简介:3DSoundLocalizationBasedonAudioandVideo;A1.5-GHzI30-nmItanium2ProcessorWith6-MBOn-dieL3Cache;A1.5GHzThirdGenerationItanium2Processor;A60.5GHzmillimeterwavespreadspectrumradarandcommunicationsystemusingaCo-useantenna;Acontourcharacterextractionapproachinconjunctionwithaneuralconfidencefusiontechniqueforthesegmentationofhandwritingrecognition;ADiscussionontheClassifierProjectionSpaceforClassifierCombining;
简介:A10mW,4GHzCMOSPhase-LockedLoopwithDual-ModeTuningTechniqueandPartly-lntegratedLoopFilter;Aclean,quiet,environmentallyfriendlysnowmobile;Acomputer-controllersystemforstudyingthethermodesorptionofdeuterium;AcontrolofvehicleusingSteer-by-WiresystemwithHardware-In-the-Loop-Simulationsystem;AcorrdinatcdcontrolofSTATCOMtoimprovevoltagestability;ADesignofReflection-TypePolarizationControlDeviceUsingFerroelectricLiquidCrystals;