VAV空调系统总风量控制方法探讨  

Study on Control Method of Total Air Volume of VAV Air-conditioning System

作　　者：李巧[1] 徐晓宁[1] 蒋仁娇 施乐[1] 刘庆军[1] 

机构地区：[1]广州大学土木工程学院,广州510006 [2]广东南海国际建筑设计有限公司,广东佛山528200

出　　处：《建筑科学》2014年第10期47-50,125,共5页Building Science

基　　金：广东省重大科技专项"大型公共建筑节能运营管理智能系统研究与示范"(2012A010800004)

摘　　要：本文针对VAV空调系统提出了一种基于末端风机转速的总风量优化控制方法,利用变频风机取代VAV BOX风阀作为风量调节机构,以末端设备的实际送风量之和作为VAV空气处理机组风机变频控制依据。本文利用Matlab/Simulink软件分别建立了该控制方法与传统风量控制方法下系统室内温度调节仿真模型,对比分析了两种控制方法下系统的调节性能,结果表明该控制方法下系统可获得更好的调节性能,室内温度及房间送风量的调节更加稳定,超调量小,调节时间短,末端送风压力得到有效保证,室内具有良好的舒适性。In this study,a new total air volume control method of VAV air-conditioning system which based on the terminal fan speed is put forward. This new method uses frequency conversion fan to replace the VAV BOX air valve as air volume regulating mechanism,and take the sum of the actual air volume of terminal unit as the base of the frequency conversion control of VAV air-handling unit fan. Build the room temperature regulating simulation models of this new control method and traditional air volume control method with Matlab / Simulink sofeware respectively in this paper. The contrast analysis result of the regulation performance of two system shows that the proposed control method can obtain better regulation performance,the system adjusts the indoor temperature and room air output in more stable way and less overshoot,short adjustment time,the end of the supply air pressure get effective guarantee,and indoor is of good comfort.

关 键 词：VAV空调系统 总风量控制 优化 仿真 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]