变频调速机泵节电率的理论分析

摘要

通过变频调速机泵节电率ξ和静压头增量Δp/γ与位头增量ΔZ之和即(Δp/γ+ΔZ)工艺参数之间关系的理论上分析表明,(Δp/γ+ΔZ)值的大小对于变频器的节电率ξ起着决定性的影响，节电率ξ随着该值的下降而提高，对于该值趋于零的泵节电效果最佳。%Theoretical analysis on relation between electricity saving percent of frequency governing motors and pumps and the sum(Δp/γ+ΔZ) of static pressure increment Δp/γ and potential pressure increment ΔZ showed that,the electricity-saving percent ξ is mainly depended on the value of Δp/γ+ΔZ.ξ value increases with the decrease of (Δp/γ+ΔZ).Thus the pump with a value of (Δp/γ+ΔZ) near zero has the optimal electricity conservation.