Pump EnergySave Calculator
Pump and System Curve Customize Pump Curve
Flow Control Config 1
The shape of the pump curve is defined by fitting a polynomial to the three points defined by the Static Pressure (at zero flow), the Nominal Pressure (at Nominal Flow) and a third point which can be positioned by the user. Use the input fields on the left and the slider below to vary the pump curve so that it best describes your application.
The efficiency curve is an empirical curve which models the mechanical pump losses along the pump curve.
If the pump operates at a constant speed throttle-valve control or On-Off Control is used to vary the flow rate.
The shape of the efficiency curve is an empirical 'one-size-fits-all' curve typical for grid-connected induction motors. The curve is scaled by the efficiency value specified by the Motor Efficiency user input in the left view.
The shape of the torque-speed curve is calculated from the nominal motor torque and slip under neglect of the stator resistance.
Variable-Speed-Drive (VFD) Operation
The two-dimensional efficiency surface is obtained using the reference machine (RM) and reference CDM (RCDM) from IEC EN 61800-9-2. The reference values in the entire torque-speed region are scaled by the efficiency specified in the efficiency classes, i.e. from IE3 to IE4 the motor losses in all operating points decrease by 80%.
The yellow triangles denote the operating points in the torque-speed region.
Use the Sliders to specify gaussian distributed Operating Points:
Use the Input Fields to the left to input a custom operating profile. The Operating Point Distribution is automatically updated. The user input is scaled so that 100% is reached.