WATER PUMPING EQUIPMENT Flashcards
Mechanical device used for transferring fluids from one place to another
WATER PUMPING EQUIPMENT
Pump classification -discharges the same volume of water regardless of the
head against which they operate.
Positive Displacement Pump
Pump classification- inverse relationship between discharge rate and
pressure head. High pressure head will result in low discharge rate and vice
versa.
Variable Displacement Pump
a type of positive displacement pump having to-and-fro motion
reciprocating pump
a type of reciprocating pump that is single-acting pump consisting of an open
cylinder, piston with built-in bucket valve. It lifts the
water to flow out from a spout
lift pump
a type of reciprocating pump that is single-acting or double-acting pump
consisting of a plunger, inlet valve, and outlet valve. It
forces the water above atmospheric pressure as
distinguished from the lift pump
force pump
a pump classification -inverse relationship between discharge rate and
pressure head. High pressure head will result in low discharge rate and vice
versa.
variable displacement pump
type of variable displacement pump most commonly used type for domestic and irrigation
purposes. Depends on centrifugal force for their operation. Consists of
an impeller inside an involute casing
centrifugal pump
type of variable displacement pump that is used for low pressure head and high discharge.
Extensively used for drainage pumping and the transfer of water from
canals and rivers to adjacent fields
propeller pump
in sizing of pumps and prime movers “A criterion that is well accepted in computing the pump capacity is to base it
on
the highest daily water requirement of the crop.
Sizing of Pumps and Prime Movers: According to the National Irrigation Administration (NIA), the water requirement
for rice production is
10 mm/day.
Efficiency (%) if DIRECT transmission systems
100%
Efficiency (%) if GEAR transmission systems
98%
Efficiency (%) if V-BELT transmission systems
95%
Efficiency (%) if FLATBELT transmission systems
90%
TYPE OF POWER UNIT- ELECTRIC MOTOR <1HP WHAT IS THE DELIVERY RATING
65-72
TYPE OF POWER UNIT- ELECTRIC MOTOR >1HP WHAT IS THE DELIVERY RATING
72-90
TYPE OF POWER UNIT- INTERNAL COMBUSTION ENGINE, AIR-COOLED GASOLINE; WHAT IS THE DELIVERY RATING?
60
TYPE OF POWER UNIT- INTERNAL COMBUSTION ENGINE, AIR-COOLED DIESEL; WHAT IS THE DELIVERY RATING
70
TYPE OF POWER UNIT- INTERNAL COMBUSTION ENGINE, WATER-COOLED DIESEL; WHAT IS THE DELIVERY RATING
80
_ _ provide an economical installation when an adequate and reliable
source of electric power is available at reasonable cost.
Electric motors
– the discharge rate of a well per foot drawdown
Specific Yield of well
is added to the total head for the computation of power to drive
the pump.
Total drawdown
