Problem 11.57
Performance data for a 21-in-diameter air blower running at 3550 rpm are as follows:
p, in H2O:
29
30
28
21
10
Q, ft3/min:
500
1000
2000
3000
4000
bhp:
6
8
12
18
25
Note the fictitious expression of pressure rise in terms of water rather than air. What is the