Top Six Uses Of
Variable Speed Pumps
Since pumps consume a lot of energy, a variable speed pump is
an effective way to improve the efficiency of a pumping system.
This is accomplished by determining the pressure needed at the
outlet point and accordingly adjusting the speed at which the
motor operates. This adjustment can be done manually or automatically,
depending on the requirement of the pumping system. The motor
moves the impeller only enough to push the required amount of
fluid, rather than at a constant speed, like in conventional
pumps. This reduces energy consumption and wear and tear, and
increases the life of the motor.
The variation in motor speed can be brought about using a Variable
Frequency Drive (for AC motors only) or a Variable Speed Drive
(for AC and DC motors). Variable speed pumping systems are used
in a wide range of applications - domestic, commercial and industrial.
Here are some of the most common examples:
1. Domestic water systems
Pumps used to circulate water in homes are one of the best examples
for the usage of variable speed pumps. Depending on whether
it is a single shower by the inhabitants of the home, or two
simultaneous showers, the motor changes its speed to pump out
the required amount of water at a constant pressure. This is
usually accomplished using a pressure sensor at the outlet point.
2. Oil pumps in motor vehicles
Engine oil pumps have used variable speed motors in all kinds
of cars, trucks, and off-road vehicles. Fuel savings have ranged
from 1% to as high as 5%!
3. Pump jacks
The reciprocating movement in pump jacks in oil wells results
in load fluctuation. Since this is cyclic, the load requirement
can be determined. Pumping systems are programmed to reduce
output accordingly. Pump jacks are a commonly-used method for
oil extraction, and the overall energy savings can be significant.
4. Submersible pumps
Submersible pumps are an everyday feature in homes and in commercial
spaces. Examples range from an air pump in an aquarium to a
feeder pump in a factory. In both cases, the volume of water
required over time may vary, making a variable speed pumping
5. Water treatment facilities
Pumping and aeration are two of the most energy-intensive processes
involved in the treatment of water. By using variable speed
drives for pumps, water treatment facilities can ensure their
pumps run at lower speeds and draw less energy, even while maintaining
the desired pressure in distribution systems.
6. Swimming pool filtration systems
A pool filtration system is typically set to ensure that the
entire volume of water gets filtered over a fixed duration.
However, the water collected through the inlet fluctuates greatly
through the time. Thus, a variable speed pump can effectively
reduce the operating level of the filtration system when less
water is passing through it.
For more information on variable speed pumps and other industrial
equipment to suit your needs, call our toll-free number 1-800-367-4180.
We have experts on hand to help you choose, install, and maintain
a variety of equipment.