Environmental Engineering Reference
In-Depth Information
Atmospheric pressure
15 ft
4 ft
figure 3.4 Open atmospheric tank.
Example 3.10
Problem:
Given the following, find the NPSHA.
Liquid = water
Temperature (
t
) = 60°F
Specific gravity = 1.0
P
a
= 14.7 psia (34 ft)
h
= 15 ft
P
v
= 0.256 psia (0.6 ft)
h
e
= 0.4 ft
h
f
= 2 ft
Vent
Atmospheric pressure
15 ft
4 ft
figure 3.5 Roofed water storage tank.
