Page 233 - Chemical engineering design
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PIPING AND INSTRUMENTATION
2950 rpm 209
250
Efficiency, %
30
(a) 40
50
60
200
70
(b) 80 70
Head, m 150 60
50
(c)
40
(d)
100
(e)
50
0
0 10 20 30 40 50 60
3
Flow-rate, m /h
Figure 5.10. Pump characteristic for a range of impeller sizes
(a) 250 mm (b) 225 mm (c) 200 (d) 175 mm (e) 150 mm.
200
Each area corresponds
150
to the performance
characteristics of one
100 pump over a range of
impeller sizes
80
70
Head, m 60
50
40
30
20
10
1 2 3 4 5 6 8 10 2 3 4 5 6 80
Flow-rate, litres/s
Figure 5.11. Family of pump curves
