带有新型隔板的管壳式换热器实验研究 翻译.pdf

HeatMassTransfer(2011)47:833–839
DOI10.1007/s00231-010-0590-x

ORIGINAL

Experimentalinvestigationofshell-and-tubeheatexchanger
withanewtypeofbaffles

YingshuangWang•ZhichunLiu•SuyiHuang•
WeiLiu•WeiweiLi

Received:9July2009/Accepted:3March2010/Publishedonline:24February2011
ÓSpringer-Verlag2011

AbstractAshell-and-tubeheatexchangerwithnewtypeThetraditionalshell-and-tubeheatexchangerwithseg-
ofbaffles,isdesigned,fabricatedandtested.Theexperi-mentalbaffles(SB-STHX)havemanydisadvantages,such
mentalinvestigationfortheproposedmodelandtheori-ashighpressuredrop,lowheattransferefficiency,harmful
ginalsegmentalbaffleheatexchangerareconducted.Thevibrationcausedbytheshell-sideflowwhichisnormalto
operationperformancesofthetwoheatexchangersarealsotubebundles.Whenthetraditionalsegmentalbafflesare
compared.Theresultssuggestthat,underthesamecon-usedinSTHX,higherpumpingpowerisoftenrequiredto
ditions,theoverallperformanceofthenewmodelisoffsetthehigherpressuredropunderthesameheatload.
20–30%moreefficientthanthatofthesegmentalbaffleTherefore,anewtypeofSTHXusingdifferenttypesof
heatexchanger.bafflesmightachievehigherheattransferefficiencyand
lowerpressuredrop.Pressuredropandheattransferare
twointerdependentfactorsinfluencingthecapitaland
1Introductionoperatingcostsoftheheatexchangesystems.Inorderto
improvetheperformance,heatexchangerswithdifferent
Heatexchangerisaveryimportantapparatusinmanytypesofbafflesaredeveloped,whichhaverelativelyhigher
fields,suchaspetroleumrefining,powergeneration,heattransferefficiencyandrelativelylowerpressuredrop,
chemicalengineering,processindustry,foodindustry,etc.suchasrodbafflesandhelicalbaffleexchangers[2–11].
Amongthedifferenttypesofheatexchangers,shell-and-Therefore,themainobjectivesofthisstudyareto
tubeheatexchanger(STHX)hasmanyadvantagessuchasdevelopanSTHXwithnewtypeofbafflestoovercome
reliablestructure,maturetechniquesandwideapplicabil-thedeficienciesmentionedaboveandtoexperimentally
ity,whichmakeitwidelyutilizedinvariousindustries[1].investigateitsperformance.Moreove