暖通空调系统中影响水泵相似定律的因素
Factors affecting pump similitude laws in HVAC systems
摘要：
对水泵能耗与转速的三次幂成正比的说法提出质疑，认为在一个具有末端负荷水量主动性调节属性的水系统中，由于管网阻抗是变量，其三次幂比例关系难以成立；在开式系统中由于系统静压的影响，盲目套用相似定律也是不妥的。
关键词：水泵,变频调速,空调水系统,节能
Abstract：
Questions the statement that pump energy and power varies as the cube of pump rotating speed in water systems. Considers that in a water system with water volume actively regulated according to the terminal load, the cubic relationship would no longer be valid because the resistance of network is variable, and that in open systems, due to impacts of system static pressure, blindly applies the similitude laws is not rationale.
Keywords:water pump，variable frequency drive， water system of air conditioning，energy saving