摘要我国经济快速发展的大背景下，能源的消耗在企业中所占的比重越来越大，也受到愈来愈高的重视。同时由于房地产的快速发展，中央空调的市场需求呈现强劲的增长趋势。在市场容量不断上升的吸引下，越来越多的厂家加入到商用中央空调的领域。变频技术应用于中央空调系统，对提升中央空调自动化水平、降低能耗、减少对电网的冲击、延长机械及管网的使用寿命，都具有重要的意义。本文通过对中央空调系统的变频节能改造的指标设计、方案实施以及实际运行效果分析，旨在使变频器在工业领域中得到广泛推广和应用，以达到节能减排、降低能耗和生产成本的目的。具有一定的实用价值。China'srapideconomicdevelopmentbackground,theenergyconsumptionshareintheenterpriseincreases,attentionhasalsobeenrising.Atthesametimeastherapiddevelopmentofrealestate,centralair-conditioningdemandshowsstronggrowthtrend.Increasingcapacityinthemarket,attractedmoreandmoremanufacturerstojointhefieldofcommercialcentralairconditioning.Frequencytechnologyusedincentralairconditioningsystem,centralairconditioningtoenhancethelevelofautomationtoreduceenergyconsumptionandreducetheimpactonpowerandprolongtheservicelifeofmechanicalpipenetwork,areofgreatsignificance.Basedonthecentralairconditioningsystem,energy-savingtargetfrequencydesign,programimplementationandanalysisofactualoperatingresultstothedriveintheindustrialfieldhasbeenwidelypromotedandappliedinordertoachieveenergyconservation,reducingenergyconsumptionandproductioncostspurposes.Hassomepracticalvalue.关键词:中央空调变频节能设计Keyword:CentralairconditioningFrequencyConversionDesign目录摘要.....................................................................................................................i一、概述............................................................................................................3二、现场工作概况.............................................................................................5三、变频运行节能原理.....................................................................................43.1变频节能...............................................................................................43.2功率因数补偿节能...............................................................................43.3软启动节能...........................................................................................5四、实施方案....................................................................................................64.1设计说明...............................................................................................64.1.1单机变频控制柜的设计............................................................64.1.2制冷系统....................................................................................74.1.3制热系统....................................................................................84.1.4冻干机系统................................................................................84.1.5组合式变风量空调机组............................................................84.2冷冻水、冷却水变频改造示意图.....................................................104.3冷冻(媒)水、热媒水泵系统的闭环控制..........................................104.4冷却水系统的闭环控制.....................................................................114.5变频风机的静压PID控制方式.........................................................124.6冷却塔散热风扇的改造。..................................
