September 23, 2020
Lab 4 Centrifugal Pump Basics
The purpose of this lab is to determine the different elements of a centrifugal pump and to
determine the characteristics of head and flow rate relationships. We will also evaluate the
performance of a centrifugal pump by measuring the performance curves for the pump.
In order to achieve this lab’s objectives, we first measured the performance of a centrifugal pump
and compared it to the manufacturer specifications. Since this lab was fully online, we observed
Professor Golla use the pump trainer and then used the recorded data to form a pump
The results for this lab are enclosed in the attached lab handouts.
By completing the exercises, we determined key performance elements of the centrifugal pump
such as head/flow rate characteristics and efficiencies of the pump running at a constant RPM.
We also determined the key differences between positive displacement pumps and non positive
displacement pumps. Non positive displacement pumps differ significantly because the flow rate
varies greatly with changes in flow resistance.
Real World Applications:
A strong understanding of the design, operations, and metrics of each pump type is extremely
important in real world applications. Centrifugal pumps are the most commonly used pumps, so
it is very valuable to fully understand their uses.
Centrifugal pumps generally provide low cost
solutions to many low pressure, high capacity pumping applications. Some of these applications
include water supply, irrigation, and the transfer of chemicals in petrochemical plants.