AnewLMRsteamgeneratorfreefromSWRwithadoubletubebundleconfigurationOriginalResearchArticle

ThispaperdescribestheactivitiesmadeatKAERItodevelopanadvancedliquidmetalreactor(LMR)steamgeneratorwhichisfreefromasodiumwaterreaction(SWR)toresolvetheconcernoftheSWRpossibilityandimprovetheeconomicfeaturesoftheLMR.Thesteamgeneratordesignhousestwotubebundlesthatarefunctionallydifferentanditstubebundleregionisradiallyorverticallydividedintotwo.TheSGisequippedwithhotandcoldfluidtubebundles,amediumfluidandapump.Itpreventstheoccurrenceofthesodiumwaterreactionwhilesodiumisstillusedasthecoolantfortheprimaryheattransportsystem.ThefeasibilityofusingtheSGwithadoubletubebundleforanactualuseinaLMRplantisevaluatedbysettinguptheskeletonoftheNSSSforvariouspossibleconfigurationsoftheSGtubebundles. Analysiswasmadeforvarioustypesofthenewsteamgeneratorwithadoubletubebundle.SincetheheattransferintheSGismadeamongthreedifferentfluids,ithasuniqueheattransfercharacteristics.Theanalysisshowedthepossibilityoftheoccurrenceofanundesirablereversedheattransfernotonlyintheintegratedsingle-regionbundletypebutalsointheintegrateddouble-regionbundletype.Theperformanceanalysisrevealedpracticalperformancecharacteristicsforthevariousbundleconfigurations.AlsothefeasibilitystudyforthevariousNSSSconfigurationswiththenewSGisdescribed