资源描述：
《过程装备与控制工程专业外文翻译本科学位论文.doc》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
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
