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1、外文文献原文Optimizationofacentral-heatingradiatorCihatArslanturkandA.FeridunOzgucDepartmentofMechanicalEngineering,FacultyofEngineering,AtaturkUniversity,25240Erzurum,TurkeyFacultyofMechanicalEngineering,IstanbulTechnicalUniversity,Gumussuyu,80191Istanbul,TurkeyAbstractAnap
2、proximateanalyticalmodelhasbeenusedtoevaluatetheoptimumdimensionsofacentral-heatingradiator.Theradiatorproblemisdividedintothreeone-dimensionalfinproblemsandthenthetemperaturedistributionswithinthefinsandheat-transferratefromtheradiatorareobtainedanalytically.Theoptimu
3、mgeometrymaximizingtheheat-transferrateforagivenradiatorvolumeandthegeometricalconstraintsassociatedwithproductiontechniques,andthermalconstraintshavebeenfound.Theeffectsofgeometricalandthermalparametersontheradiator’sperformancearepresented.Keywords:Centralheating;Opt
4、imization;Radiators1.IntroductionRadiatorsarethemostpopularcentral-heatingemitters.Astheradiatorishotterthantheairsurroundingit,acertainamountofheatistransferredtotheairandthusthewaterexistsatalowertemperature.Ofthevariousdesignsavailableusuallyequippedwithconvectionfi
5、nstoimprovetheirheatoutput,arecommonindomestic,businessandindustrialenvironments.Theuseofcentral-heatingradiatorsisthemainformofdomesticheatinginthehomes.Althoughradiatorsareknownasradiator,mostoftheiroutputisbynaturalconvection.Sincetheaveragesurfacetemperatureofacent
6、ral-heatingradiatorisgenerallylessthan80 °C,thecontributionofradiativetransfertothetotalheattransferissmallerthanthatofthenaturalconvectionheattransfer.Becauseofthelowsurfacetemperatures,radiationheattransfertermintheenergybalanceequationscanbelinearizedinthethermalana
7、lysisofsucharadiator.Inthepresentpaper,assumingthatthepredominantmodesofheattransferareconductionandconvection,andtheeffectoftheradiationisignored,anapproximatemathematicalmodelisconstructedforfindingtemperaturedistributionandheattransferrate.Thedesignandoptimizationof
8、theseradiatorsorfinsandfinassembliesaregenerallybasedontwoapproachesand:oneistominimizethevolumeormassforagivenamount
