Pump Selection and Performance Prediction for the Technical Innovation of an Axial-Flow Pump Station

Table 1

Comparison of performances between the original and selected pumps.

Blade setting angel; /°	Flow rate		Pump head		Specific speed		Efficiency
	/(L/s)		/(m)				/%
	Original Pump	Selected Pump	Original Pump	Selected Pump	Original Pump	Selected Pump	Original Pump	Selected Pump
+4	375	444	4.45	5.22	1007	1022	84.2	86.4
+2	350	416	4.43	5.19	1020	993	84.5	85.8
0	330	401	4.21	4.80	1033	1034	84.0	85.7
-2	305	377	4.20	4.80	996	1002	83.7	85.5
-4	280	357	4.10	4.60	972	1007	83.1	85.3
-6	250	332	1.03	4.60	930	971	82.0	85.1