换热器外文翻译 (2)

《换热器外文翻译 (2)》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、bHeatExchangersKeyTermsBaffles—evenlyspacedpartitionsinashellandtubeheatexchangerthatsupportthetubes,preventvibration,controlfluidvelocityanddirection,increaseturbulentflow,andreducehotspots.Channelhead—adevicemountedontheinletsideofashell-and-tubeheatexchangerthatisusedtochanneltube-si

2、deflowinamultipassheatexchanger.Condenser—ashell-and-tubeheatexchangerusedtocoolandcondensehotvapors.Conduction—themeansofheattransferthroughasolid,nonporousmaterialresultingfrommolecularvibration.Conductioncanalsooccurbetweencloselypackedmolecules.Convection—themeansofheattransferinflu

3、idsresultingfromcurrents.Counterflow—referstothemovementoftwoflowstreamsinoppositedirections;alsocalledcountercurrentflow.Crossflow—referstothemovementoftwoflowstreamsperpendiculartoeachother.Differentialpressure—thedifferencebetweeninletandoutletpressures;representedasΔP,ordeltap.Diffe

4、rentialtemperature—thedifferencebetweeninletandoutlettemperature;representedasΔT,ordeltat.Fixedhead—atermappliedtoashell-and-tubeheatexchangerthathasthetubesheetfirmlyattachedtotheshell.Floatinghead—atermappliedtoatubesheetonaheatexchangerthatisnotfirmlyattachedtotheshellonthereturnhead

5、andisdesignedtoexpand(float)insidetheshellastemperaturerises.Fouling—buildupontheinternalsurfacesofdevicessuchascoolingtowersandheatexchangers,resultinginreducedheattransferandplugging.Kettlereboiler—ashell-and-tubeheatexchangerwithavapordisengagingcavity,usedtosupplyheatforseparationof

6、lighterandheaviercomponentsinadistillationsystemandtomaintainheatbalance.Laminarflow—streamlineflowthatismoreorlessunbroken;layersofliquidflowinginaparallelpath.Multipassheatexchanger—atypeofshell-and-tubeheatexchangerthatchannelsthetubesideflowacrossthetubebundle(heatingsource)morethan

7、once.Parallelflow—referstothemovementoftwoflowstreamsinthesamedirection;forexample,tube-sideflowandshell-sideflowinaheatexchanger;alsocalledconcurrent.Radiantheattransfer—conveyanceofheatbyelectromagneticwavesfromasourcetoreceivers.Reboiler—aheatexchangerusedtoaddheattoaliquidt