空调中流体输送系统变频节能经济分析

Cost-effective analysis of using variable-frequency control for energy saving in the fluid transfer System of air-conditioning

介绍了变频调速技术及在空调系统中的节能原理，分析了空调系统流量调节方式与能耗的关系,通过实例说明变频调速装置用于空调的变流量调节可显著节能,提高空调系统的经济性。

With the rapid development of the variable frequency technique for speed control of alternating-current motors, this technique has found increasingly extensive applications in air-conditioning systems and has proved itself to be very effective for energy conservation, e.g. in VAV air-conditioning systems. This paper described the variable frequency control technique and the principle and application of the technique for energy conservation in air-conditioning systems. The dependence of the power consumption on the control modes of flowrate in the air-conditioning system was analyzed in detail. By means of case study it was demonstrated that the variable frequency technique can be used for the control of flowrate in the air-conditioning system and consequently achieve remarkable results for energy saving.