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1、毕业设计(论文)外文翻译毕业设计(论文)题目:甲烷化水冷器设计外文题目:MethanationWaterCoolers译文题目:甲烷化水冷器学院:化工装备学院专业班级:过程装备与控制工程0902学生姓名:魏冰指导教师:张雅新年月日指导教师评阅意见指导教师签字:年月日MethanationWaterCoolersHeatexchangersaremechanicaldevicesdesignedfortheproficienttransferofheatfromonefluidmattertoanotherviaa
2、solidsurface.Itisimportanttonotethatthefluidsthemselvesnevermixbutinsteadareseparatedbythesolidsurface.Thisprocesshasfoundwideapplicationintheengineeringworld,butalsoineverydayhouseholdusessuchasairconditioningandrefrigeration.Probablythemostwellknownheatexch
3、angingdeviceisacar’sradiator.Otherexamplesincludeintercoolers,boilers,condensers,andalsopre-heaters.heatexchangers,includingaprocessofconvectionandconductiontofunction.Inordertoproperlymeasuretheoperationofheatexchangers,boththeefficiencyaswellasthesizemustbe
4、takenintoaccount.Efficiencyismostoftenratedbythemeasurementoftheactualtemperaturechangethatbothfluidsexperience,aswellasthedropinpressuretheheatexchangerevidences.Thesizeoftheheatexchangerisdeterminedbytherequiredtemperaturechangeforecasted,thespeedatwhichthi
5、schangeistobeaccomplished,aswellastheallowablepressuredrop.Alackofefficiencymaypointtoimproperoperationofthedevice,whileasuddendropinefficiencyisaclearsignofmaterialfailureorinput/outputstrain.Othertroubleshootingstepsshouldincludeproperremovalofchemicalbuild
6、ups.HeatExchangersfallintoanumberofcategories,nameparallel-flow,counter-flow,andcross-flow.Theseclassificationspertaintotheflowdefinition,ieaparallel-flowheatexchangerallowsthefluidstoenterthedeviceatthesameendandtravelthroughitinparallelmode,exitingattheoppo
7、siteend.Counter-flowdevicesforcethefluidstoenteratoppositeendsandalsoexitoppositefromoneanother.Cross-flowexchangers,ontheotherhand,havethefluidstravelingatrightanglestooneanotherthroughthedevice.一、MethanationAmethanationreactorcomprisinganoutermetalcasinghav
8、ingaremovablelidmountedtothetopportionofsaidcasing,saidlidhavinganapertureextendingtherethroughforintroducinggasestobereactedintotheoutercasing,aninnercasinghavingcovermeansandpositionedw