Pump EnergySave Calculator

Pump EnergySave Calculator

Pump and System Curve Customize Pump Curve

[m3/s]
[m3/s]
[m3/hour]
[GPH]
[GPS]
[m]
[m]
[Pa]
[psi]
[%]
[m]
[m]
[Pa]
[psi]
[m]
[m]
[Pa]
[psi]
[kW]
[rpm]
[kg/m3]

Flow Control
Config 1
More Info
Config 2
More Info
Config 3
More Info
SVG Image Throttle-Valve
Throttle-Valve SVG Image
On-Off SVG Image
Slip-Coupling SVG Image
VFD-Driven SVG Image
SVG Image On-Off
Throttle-Valve SVG Image
On-Off SVG Image
Slip-Coupling SVG Image
VFD-Driven SVG Image
SVG Image VFD Drive
Throttle-Valve SVG Image
On-Off SVG Image
Slip-Coupling SVG Image
VFD-Driven SVG Image
Motor Drive
More Info
More Info
More Info
[kW]
[U/min]
The displayed motor efficiency is defined at 100% nominal motor power and sinusoidal voltage input
IE3
%
IE2
IE3
IE4
IE5
custom
IE3
%
IE2
IE3
IE4
IE5
custom
IE3
%
IE2
IE3
IE4
IE5
custom
The displayed inverter efficiency is defined at 90% speed and 100% torque
IE1
%
IE0
IE1
IE2
input
IE1
%
IE0
IE1
IE2
input
IE1
%
IE0
IE1
IE2
input
Commercial Data


reference [€]
[€]
[%]
[€]
[years]

Operating Conditions

hours
€/kWh
Operating Time [%] per Flow Rate
10% of nominal flow
20% of nominal flow
30% of nominal flow
40% of nominal flow
50% of nominal flow
60% of nominal flow
70% of nominal flow
80% of nominal flow
90% of nominal flow
100% of nominal flow
Commercial Results
Energy Consumption Energy Cost
Configuration 1:
Configuration 2:
Configuration 3:
Return of Investment
Amortization Time Money saved at End of Lifetime
Configuration 2: years
Configuration 3: years
X
Pump Model

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.

X
Motor Model for Configuration

Grid-connection

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.

X
Operating Point Bar Graph

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.

X
Control