A Comparison Of The Application Of Centrifugal And Positive Displacement Pumps
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There are very basic differences between the centrifugal and positive displacement pump. This paper discusses some of these aspects. It is not intended to be highly theoretical, but deals with the practical differences that affect the application of the two different types of pumps. Specific designs of centrifugal and positive displacement pumps are not emphasized, but the application traits common and different among the designs are covered. Discussed are theoretical differences in the way fluids are moved within the pump, the relationship between the pump type and the system, failures due to cavitation, performance with viscous liquids, minimum flows, and variable speed drives versus control valves for changing pump performance.
Urquhart, C. Daniel; Wordley, Mark (2000). A Comparison Of The Application Of Centrifugal And Positive Displacement Pumps. Texas A&M University. Turbomachinery Laboratories. Available electronically from