Specific speed, a dimensionless parameter, is typically defined for a pump operating at its peak efficiency. To optimize operational costs, it’s ideal to run pumps as close to this maximum efficiency point as possible.
Radial flow pumps exhibit a relatively low specific speed compared to axial flow pumps. This characteristic indicates that radial flow pumps are generally more suited for applications requiring higher head (pressure) with lower discharge (flow rate). Conversely, axial flow pumps excel in scenarios demanding higher discharge with lower head.
Understanding the relationship between specific speed and pump type is crucial for selecting the most efficient and cost-effective pump for a given application. By considering the specific speed, engineers can match the pump’s characteristics to the desired hydraulic parameters, optimizing system performance and minimizing operational expenses.