Page 43 - Centrifugal Pumps Design and Application
P. 43

26    Centrifugal Pumps: Design and Application


































                   Figure 2-8. Performance change with speed change.

        » Mechanical Considerations
          High horsepower/large shaft diameter
          High suction pressure
          Operating speed
          Operating temperature
          Running clearances
        • Pump Liquid
          Slurries
          Abrasives
          High viscosity
          Dissolved gases
        • System Considerations
          NPSHA
          Suction piping arrangement
          Discharge piping arrangement
          Shape of H-Q curve
          Runout conditions
          Vibration limits
          Noise limits
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