Comparison of Saddle-Shaped Region of Head-Flow Curve between Axial-Flow Pump and Its Corresponding Axial-Flow Pump Device

Table 2

Efficiency data.

Number	1	2	3	4	5	6	7	8	9	10
Efficiency (%)	82.39	82.19	82.28	82.33	82.36	82.38	82.21	82.17	82.21	82.27