简介:ThispaperdealswithanexperimentalinvestigationofpinfinboilingofsaturatedandsubcooledHFE-7100underatmosphericpressure.Finbasetemperatureandheatfluxdataaremeasuredalongwiththefintiptemperature.ThebasicfeaturesofboilingstabilityofHFE-7100boilingonpinfinhadbeenreportedforthefirsttime.Foragivenliquid/heatingsurfacecombinationthereexistuppersteady-state(USS)branchandlowersteady-state(LSS)branch,andalarge,unstableregimelocatedinbetween.Zoneswithdifferentstabilitycharacteristicsaremappedaccordingtoboilingonfinswithdifferentaspectratios.Liquidsubcoolingcanlargelyenhanceheattransferperformance.Alongerfincanprovideasaferoperation.
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简介:【摘要】本文研究了PIN-FET光接收模块在低温条件下工作造成光纤陀螺零漂稳定性超差的问题。通过建立故障树分析了其失效原因,发现由于PIN光电探测器使用的一款三极管芯片截止频率发生变化,模块带宽变大,输出脉冲信号存在振铃现象,最终导致光纤陀螺低温下零漂稳定性超差。