VAV与VWV结合的空调系统控制模式优化

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1、西南交通大学研究生学位论文vAV与VWV箜金鱼窒塑圣丝控制模式优化年级二00四级专二oo七年五月西南交通大学硕士研究生学位论文第1I页AbstractItisapressingproblemtoeffectivelyreducetheenergyconsumptionofair-conditioningsystemwhichisinthemajorityofthebuilding’senergy．Itincludesairsystemandchilledwatersysteminatypical

2、andintegratedair-conditioningsystem．Andtooptimizethetwopartsisoneofthepotentmeasurestoenergysavings．Theair-conditioningsystemoperatesinlowerloadsmostly．Fortheairsystem，VAVsystemcanmakechangestofollowtheloadandisgoodforenergysavings，soitisavailablyapp

3、lledandresearched，anditcomesoutseveralcontrolmodes．Forthechilledwatersystem，italsocomesoutseveralcontrolmodesduetomakethecoldSOUrCe'Sfluxmatchtotheterminalapparatus’needsandreducethecostofcirculations．Facingtoseveralmodes，ithasimportantmeaningstofind

4、abestassembledmodetosatisfythedifferentload，whichisaimedatreducingthetimeforresponse．Itanalysesthesensitivityofcoolcoil，andpointsouttherelationshipsbetweenvariablessuchasairinlettemperature，airfluxandchilledwaterflux，andformulizethem，andalsopreparefo

5、rbringingairsystemandchilledwatersysteminanair-conditioningsystem。Bringanewonewhichisnamedreturnwatertemperaturepredictionmodeinexistingmodes，andinthisnewmode，itbringsinfeedforwardideainordertoresponseearlier．SimulateanVAVsystemwithMatlab／simulinksof

6、twareinfourwayssuchasreturnwatertemperaturecontrolmode，improvedreturnwatertemperaturecontrolmode，variablepressurecontrolmodeandreturnwatertemperaturepredictionmode，andshowsthatthesefourmodesareallfeasiblefromthesupplyairflux，waterflux，indoorairtemper

7、atureandsupplyairtemperature，fortheythesefourfactorsadjustthemselvesperiodicallywhentheoutdoorairtemperaturechangesperiodically．supplyairflux，waterflux，indoorairtemperatureandsupplyairtemperatureadjustthemselvesperiodicallywhentheoutdoorairtemperatur

8、echangesperiodically．Itshowsthesefourwaysareavailableinairsystemandwatersystemwhenpeopleadjustthembyfrequencyconversion．Confirmsthatthe西南交通大学硕士研究生学位论文第lIl页returnwatertemperaturepredictionmodehastheforwardfeedfunction，anditisadvancedthroughtOobjective