基于虛擬溫度的多流股換熱器網(wǎng)絡綜合.pdf

1、大連理工大學碩士學位論文基于虛擬溫度的多流股換熱器網(wǎng)絡綜合姓名：原棟文申請學位級別：碩士專業(yè)：化學工程指導教師：王瑤20060601基于虛擬溫度的多流股換熱器網(wǎng)絡綜合Multi—s仃eamHeatExchangerNel：workSynⅡlesisBasedonthePseudo—temperatureAbstractHeattrallsfers印propriatelybe柳eenhota11dcoldstrealns盯eextreme

2、lyimportantwhichcanincreaset11eoperatingperfbⅡnanceofmepmcessThechemicalengineersareexpectedtoaIlalysemetopogolyofheatexchangers，吐lematchesbetweenhotandc01ds打e枷s，theef!fectofheatexchajlgers’par甜neterson砌ualcoSta11dof倫rth

3、eoptimalapproachThepinchpointislocatedbythestrealllheattrallsfertemperatIlredi雎rencecontribu_【ionValueinsteadofheatrecovery印proac湘temperatureUsingparallelizedGA／SAtooptimizetlletemperatIlredi商：rencecOntributionvaIueforev

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5、etenninedbystatisticalmethodThestreampseudo—temperatureincamatesthedif詫rencesofstreamsinheattrallsferThestreamapparenttemperatureisshiRedimopseudo—temperaturet11rou曲thestreamheattransfertemperaturedifferencecontr沁utionva

6、luePseudo—temperal=uremeansstreamheattransferabilitvieveiwhichconsidersditferencesbetweenstre鋤sinheat劬1sfercoefncienta】1dmaterialsofconstructionetc1hepillchpOintislocateda11dmilitiesaredetemlinedbasedonthepseudo—temperat

7、ureproblemtablealgoritllm，t11ehotaIldc01dcompositecurvesaredividedintoseveralblocksbycuningVerticallyateVerypointwheremecompositecur、，esbend(kink)“Venicalmatches”againstmecompositecurvesareperfoⅡIledasmuchaspossiblet0ach

8、ievememinimumtotaIareaSystemswitll“Thresholdtemperature”ormultiplepinchpointsalsoaresynthesizedin山isp印erN眥berofbmchesandmaxilllmnareaineachmulti—s廿eanlheatexchangerareemployedasnewres州c“ontomeett1eindusnja】practiceEVaIua

9、temefeasibIeintenraIforthestre枷heattransfertemperaturedif詫renceco柵butionValucANLPmodelwhoseobjectivemnctionismeannualcostofthenetworkispresemedtooptimizemestre鋤heattrallsfertcmperaturedif億rencecontributionvalueforeachstr

10、e啪，therearenobinaryva—ablesorsupers譏Jctureinthismodel，fhnhe珊ore，tllenurnbefofcontinuousv撕ablesissmaIIerⅡlanmeDreviousmetllodPGA／SAisusedtos01vemeNLPproblemDesignOCXopemtorforpreseⅣingpatema王goodinfo啪ationandECoperatorfor