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1、英文原文HowAirConditionersenergyconservationtechnologyresearch1.IntroductionsTheenergyconservationmaysayisthebuildingcharacterautomaticcontrolsystemstartingpointandthehometoreturnto.Itiswellknown,intheintelligentconstruction,HVAC(heating,ventilatesandairconditioning)the
2、systemconsumestohavetooccupythebuildingconsumptiontotalenergyenormouspartialproportions,approximatelyabout50%~60%.Speciallycold:Easttheunit,thecoolingtower,thecirculatingwaterpumpandtheairconditioningunit,thenewatmosphereunit,allareconsumesenergythebighousehold.Ther
3、eforereallyhasessentialdevelopsoneeffectiveair-conditioningsystemenergyconservationmethod,especiallyusesisinimprovesintheexistingbuildingair-conditioningsystemautomationtheaspect.空调节能技术的研究1．引言节能可以说是楼字自动控制系统的出发点和归宿。众所周知，在智能建筑中，HVAC(采暖、通风和空调)系统所耗费的能量要占到大楼消耗的总能量的极大部分比例
4、，大致在50％~60％左右。特别是冷冻机组、冷却塔、循环水泵和空调机组、新风机组，都是耗能大户。所以实有必要发展一种有效的空调系统节能方法，尤其用是在改善现有大楼空调系统自动化上方面。DDC(Directdigitalcontr01)thedirectofnumericalcontrol,isastructuresimpleoperationeasycontroldevice,itmayborrowbytheconnectionswitchesovertheequipmenttomakethesystemscontrolalo
5、ngwiththeloadchange,liketheairconditioningcoldwatercirculatorysystem,theairconditioningboxfrequencyconversionautomaticamountofwindadjustmentandthecoolingtowerradiationventilatorfrequencyconversionholdscontrolsandsoon,mayletanair-conditioningsystemmoreeffectiverevolu
6、tion,likethis,notonlybringstheverybigeconomicefficiencyfortheestatemanagement,moreoveralsomaycausethesystemtomoveunderabetteroperatingmode,thuslengthenstheequipmenttheservicelifeaswellasachievedprovidesgoalofthecomfortableairconditioningenvironmentandtheenergyconser
7、vation.DDC(Directdigitalcontrol)直接数字化控制，是一项构造简单操作容易的12控制设备，它可借由接口转接设备随负荷变化作系统控制，如空调冷水循环系统、空调箱变频自动风量调整及冷却水塔散热风扇的变频操控等，可以让空调系统更有效率的运转，这样，不仅为物业管理带来很大的经济效益，而且还可使系统在较佳的工况下运行，从而延长设备的使用寿命以及达到提供舒适的空调环境和节能之目的。Thegeneralbuildingcommonlyusedair-conditioningsystemhasCAV,VAV,VWV
8、andsoon,respectivelyhasdifferentlyholdscontrolstheway,allmayuseDDCtocontrol.一般大楼常用的空调系统有CAV、VAV、VWV等，各有不同操控方式，都可以用DDC控制。1）decidestheamount
