中央空调水系统中变频控制技术的应用*

作者：林永进 日期：2009-11-16/span> 浏览：3890 查看PDF文档

中央空调水系统中变频控制技术的应用*

林永进
(浙江商业职业技术学院 应用工程系，浙江 杭州 310053)

摘要：针对当前中央空调系统中水泵能耗大的问题，阐述了中央空调系统的工作原理和水泵的工作特性，分析了水泵在不同调节方法下的性能变化情况，结果表明，采用变频控制的调速方法更适合于水泵的节能运行和延长使用寿命，同时提出了在冷冻水系统和冷却水系统中分别以回水温度和冷凝器出水温度为控制对象的闭环控制方式，并针对不同的冷凝器出水温度提出了水泵调速的分段控制方法，不仅方法简单、可靠，而且节能效果好。
关键词：中央空调；水泵；变频控制；节能
中图分类号：TU831.3文献标识码：B文章编号：1001-4551(2009)09-0108-03

Application of frequency conversion control in the central air conditioning water system
LIN Yongjin
(Department of Applied Engineering, Zhejiang Vocational College of Commerce, Hangzhou 310053, China)
Abstract: Aiming at the problem of higher energy consumption of the water pump in central air conditioning system, the principle of central air conditioning system and the operating characteristics of water pump were expounded. The water pumps property changes on different regulation method was analyzed. The results show that the speed regulation method by frequency conversion control is more suitable for energysaving operation and prolonging service life of water pump. A closed loop control mode of chilled water system and cooling water system is proposed. This mode separately uses return water temperature and condensers outlet water temperature as control object. According to different condensers outlet water temperature, a subsection control method for speed regulation of water pumps was presented. It is not only simple and reliable, but also has good energysaving effect.
Key words: central air conditioning system; water pump; frequency conversion control; energy saving
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