也谈空调冷热水循环泵变频节能问题——兼论《空调变频水泵节能问题探讨》和《空调冷热水循环泵变转速节能控制方法》两文
Discussion on energy saving of variable frequency chilled and hot water pumps in an air conditioning system
摘要：
分析了定扬程控制、定末端压差控制和最小阻力控制三种控制方式，指出定末端压差控制可能导致水泵扬程不足，并且在实际情况下无论哪种控制都不可能使水泵消耗的功率与流量的三次幂成正比。
关键词：定扬程控制,定末端压差控制,最小阻力控制,水泵,节能
Abstract：
Analyses three control modes—constant pressure control, constant terminal differential pressure control and minimum resistance control. Points out that constant terminal differential pressure control may result in insufficiency of pump pressure, and actually the power of pumps can not be in proportion to the third power of the flow in each control mode.
Keywords:constant pressure control, constant terminal differential pressure control, minimum resistance control, pump, energy saving