The pump model may be enhanced to predict the pump performance for a range different operating speeds & different impeller diameters.



To define the limits for the pump performance, enter the minimum & maximum operating speed data, and the minimum & maximum size of the impeller diameter.


MaxMinSpeedDiameter3.dib

Figure 84 Pump Speed and Impeller Data

Click the ‘Draw Graph’ button to re-draw and show the new operating range.


DrawGraphButton.dib


The pump graph will be re-drawn by using standard affinity laws to predict the flow & head performance for the maximum & minimum impeller diameters.



The ‘Graph Options’ button  provides access to additional settings that configure the color and display of items on the graph, and it also provides access to allow bespoke configuration of the predicted pump performance data, so that it can be matched to a pump’s real-world performance as detailed on a pump manufacturers graph and data sheet.


GraphOptionsButton.dib




The pump graph can be set to display the Design Curve, Design Point, Operating Envelope, System Curve, Preferred Operating Region, and Efficiency Curve.


Shaft Power and NPSHr graphs can be displayed below the main performance graph


Efficiency data can also be displayed on the graph, either as a single line for a specific pump curve, or as a series of iso efficiency lines that show efficiency performance across a range of impeller sizes


Figure 85 Pump Graph Options

If a logo image has been imported, this can be included on or excluded from the pump graph by selecting the ‘Imported Logo’ checkbox in Graph Options. 


If a pump curve image has been imported, this can be included on or excluded from the background of the pump graph by selecting the ‘Imported Curve’ checkbox in Graph Options. On the Pump Graph screen itself, the imported pump curve image can also be faded in and out as required.