Handbook of Civil Engineering Calculations

Capacity, L/s

FIGURE 10. Pump characteristics when impeller diameter is varied

within the same casing.

Related Calculations. Use the procedure given here to select any class of
pump—centrifugal, rotary, or reciprocating—for any type of service—power plant, atom-
ic energy, petroleum processing, chemical manufacture, paper mills, textile mills, rubber
factories, food processing, water supply, sewage and sump service, air conditioning and
heating, irrigation and flood control, mining and construction, marine services, industrial
hydraulics, iron and steel manufacture.

Capacity, gal/min

FIGURE 11. Variable-speed head-capacity curves

for a centrifugal pump.

Total

heod

mt

Total

head,

ft