××××学院毕业设计（论文）变频器在中央空调系统节能改造中的应用研究学生：×××学号：专业：电气工程及其自动化班级：指导教师：××××学院自动化与电子信息学院二00九年六月摘要中央空调系统已广泛应用于工业与民用领域，在宾馆、酒店、写字楼、商场、住院部大楼、工业厂房中的中央空调系统，在没有使用具备负载随动调节特性的控制系统中，无论季节、昼夜和用户负荷怎样变化，各电机都长期固定在工频状态下全速运行，能量的浪费是显而易见的。近年来由于电价的不断上涨，造成中央空调系统运行费用急剧上升。据统计，中央空调的用电量占各类建筑大厦总用电量的70%以上，其中中央空调水泵的耗电量约占总空调系统耗电量的20%～40%，故节约低负荷时压缩机系统和水系统的消耗的能量，具有很重要的意义。近年来随着IC产业的迅猛发展，变频器的价格大幅下降，采用变频器对风机、水泵类机械进行调速来调节风量、流量，已变得越来越现实，其对节约能源、提高经济效益具有重要意义。关键词：变频器中央空调系统节约能源ABSTRACTThecentralair-conditioningsystemhaswidelyappliedintheindustryandthecivildomain,intheguesthouse,thehotel,theoffice,themarket,in-patientdepartmentbuilding,theindustryworkshopcentralair-conditioningsystem,indoesnothavetheusetohaveintheloadfollow-upadjustmentcharacteristiccontrolsystem,regardlessoftheseason,howthedayandnightandtheuserdoshoulderchange,variouselectricalmachineryallforalongtimefixunderthepowerfrequencyconditionthefullspeedmovement,theenergywasteareobvious.Inrecentyearsasaresultoftheelectrovalenceunceasingrise,createdthecentralair-conditioningsystemoperatingcosttorisesuddenly.Statisticshaveindicated,thecentralairconditioningelectricityconsumptionoccupieseachkindofbuildingbuildingtotalelectricityconsumptionabove70%,inwhichcentralairconditioningwaterpumppowerconsumptionapproximatelycomposesthetotalair-conditioningsystempowerconsumption20%~40%,whensavesthelowloadthecompressorsystemandtheaqueoussystemconsumptionenergy,hastheveryvitalsignificance.InrecentyearsalongwiththeICindustryswiftandviolentdevelopment,thefrequencychangerpricelargedrop,usedthefrequencychangertotheairblower,thewaterpumpclassmachinerycarriesonthevelocitymodulationtoadjusttheamountofwind,thecurrentcapacity,hasbecomemoreandmorerealistic,ittosavedtheenergy,enhancestheeconomicefficiencytohavethevitalsignificance.Keywords：FrequencychangerCentralair-conditioningsystemSavestheenergy目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc232304117"HYPERLINK\l"_Toc232304119"摘要PAGEREF_Toc232304119\hIHYPERLINK\l"_Toc232304120"ABSTRACTPAGEREF_Toc232