Pump Shaft Power

The calculated "Duty Power" result for a pump in FluidFlow is the pump shaft power as opposed to pump hydraulic power. The image below provides an example pump shaft power calculation. 

 

Note, the "Duty Power" is only available as a result when we are modeling a manufacturer's pump and have defined the efficiency curve data in the database. When auto-sizing a pump, there wont be a results for "Duty Power" since we won't have any efficiency curve data available from which to calculate the pump shaft power. 

 

• Related Articles

• Eductor / Ejector / Jet Pump

  At the moment, FluidFlow doesn't have an eductor node. There is however a workaround for this type of scenario as per the example below. Figure 1 shows a scenario where we have an eductor. Figure 1 A model of the above system has been developed in ...

• Pump Static Head

  Static head refers to the difference in elevation thus, the total static head of a system is the difference in elevation between the liquid levels at the discharge and suction points of the pump. The static discharge head is the difference in ...

• The Flow of Liquid via a Pump

  Please see attachment. The Flow of Liquid via a Pump_Rev0.docx

• Database - Defining a Pump Capacity Curve

  When defining the pump capacity/performance curve for a pump in the database, the recommendation is to define the curve across the full quadrant. The image below shows two example approaches to defining a pump curve. The blue colored curve is ...

• Negative Static Head on Pump Chart

  The starting point of the system resistance curve is dependent on the characteristics of the system and although you may not expect it, the system curve can start at a negative value on the head axis. This can occur in systems whereby the design ...