Page 40 - Centrifugal Pumps 2E
P. 40

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
   35   36   37   38   39   40   41   42   43   44   45