【摘要】 介绍了试验条件及数据处理方法,对变频水泵装置的扬程、流量、总功率、总效率随频率的变化规律通过试验进行了分析。结果表明:转速比的平方不等于扬程比,转速比的立方不等于功率比;相对频率比为84%~100%时,流量比等于转速比;相对频率比大于0.5,小于1时,降低频率,节能效果显著;相对频率比小于0.28时,继续降低频率,变频水泵装置节能潜力不大。更多还原

【Abstract】 Presents the experiment conditions and data processing method.Analyses the variation characteristic of the head,flow rate,total power and total efficiency of variable frequency pump device with the frequency.Analysis indicates that the square of speed ratio is not equal to the head ratio,and the cube of speed ratio is unequal to the power ratio.The flow rate ratio is equal to the speed ratio in the condition of the relative frequency ratio between 84% and 100%.The results also show that the energy saving effect is great by reducing the frequency when the relative frequency ratio ranges from 0.5to 1.When the relative frequency ratio is lower than 0.28,the energy saving potential is low by further reducing frequency.更多还原