换热网络多级综合策略研究

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1、郑州大学博士学位论文换热网络多级综合策略研究姓名：靳遵龙申请学位级别：博士专业：化学工艺指导教师：董其伍20070318郑州太擘傍士学谨诒之热器当中按面积比例线性宏观初始分配，并以详细设计结果为依据进行二次分配。经过换热器详细设计，综合出的新能量系统与现场能量系统的比较结果表明了该方法的可行性。基于换热网络的温度传递系数分析，能够定量地求得决策变量和参数对状态变量和目标函数产生的影响，可以求得状态变量随决策变量的变化。为了进行实验验证，设计开发了一套换热网络实验装置，可进行单个换热单元的传热实验，或若干台换热器串、并联组成小规模的换热网络。实验结果表明：换热网络温度传递系数分析可以较为准

2、确地分析、预测决策变量的温度波动带给状态变量的影响程度。关键词：换热网络；优化；火用经济分析；传热强化；污垢IIAbstractS”州慨isandoptimizationofprocess％agysystemisallimportantmoLFlodofdecreasingenergyconsmnpbonnowadays．Itisimportantforsaving即ergy∞ur∞，protectingenviromnentandestablishingnationaleconomicsystemwithlowdeV甜onandhi曲output，lessenergyconsumpti

3、onandlessleto臣circularandco而nuablc．Improvingtheefficiencyofenergyusingandtheconflictbctwenndemandandsupplywill自18u1"osocialeconomicandnationaleconomicsafe．Basedonthenowadayconditionoftheenergyusingefficiencyandthetheoryandtechnologyaboutprocessenergysystemsynthesisandoptimization,optimumenergysys

4、temcombinedwithfactualproblemw∞proposed．Itisaimedatofferingadviceforgragsrootsandretrofitdesignofprocessindustry．Combinedthefirstandthesecondlawofthermodynamicsand&Ad-gyoonsumptionexpensesubstitutedutilitiescostasoperatingcost，theobjectlvefunctionbasedonexergoeconomicswasproposed，whichdeterminedt

5、heoptimumminimumapproachtemperatureofHENs．Coldandhotutilitiesw∽inte伊atedwimprocessstreamsintoT-Hplot,formingbalancedcompositecurves,basingOllpinchtechnology．ExergyconsumptionofheattransferinHENswflscalculatedusingsubscetionintegralonbalancedcompositecurves．Theeffectoffoflingontemperaturedisturban

6、cepropagationtoacontrolledvariableinheatexchangernetworkwasresearched．ItⅥⅧstudiedthatthequalitativeandquantitativeeffectoffooaingontemperaturepropagatinginthewholeheatexchangernetworkandthenM疆suIPsofeliminatingnegativeeffectwereproposed，Basedonthemethodoftemperaturepropagatingthetemperatlaepropag

7、atingtablesWOl'Oputforward,whichcontaintheinformationforimprovingthenetworkandCallbebecometheeffectivetooltoevaluateandanalyzethetemperaturepropagatingintheheatexchangernetwork．Itistointegrateoptimaldesignofsingleheate