Brochure
H [m]
50
40
70
Head
60
50
40
20
10
2
4
6
8
10
0
30
30
20
10
0
10
0 0
2
4
6
8
0 10 20 30 40 50 60 70 Q [m
3
/h]
P [kW]
2
NPSH [m]
η [%]
Efficiency
Power
NPSH
3030
2. Performance curves
2. Performance curves
The pump performance is normally described by a set of curves. This chapter
explains how these curves are interpretated and the basis for the curves.
2.1 Standard curves
Performance curves are used by the customer to select pump matching his
requirements for a given application.
The data sheet contains information about the head (H) at dierent flows
(Q), see figure 2.1. The requirements for head and flow determine the overall
dimensions of the pump.
Fígure 2.1: Typical performance curves for a
centrifugal pump. Head (H), power
consumption (P), eciency (η) and NPSH are
shown as function of the flow.