GPS-X Technical Reference

Other Models 298
PUMPING STATION
The noreact model for Pumping Station is modified for the fixed water level option.
In the fixed water level option, the pumping flow rate used to be equal to the input flow rate. One
of the issues with the model was that in a flow scheme with pump recycle, the pumped flows gets
unbounded.
In the variable water level option, the main problem was the undefined flow rates for the steady
state calculations.
Both of these problems are addressed in the new model. In the new model, the fixed level option
is made equivalent to the continuous pumping while the variable water level option is considered
equivalent to intermittent pumping with water level control.
Model Data Input
The new input form is as shown in Figure 11-1:
Figure 11-1 - Pumping Station Menu
Continuous pumping
This variable controls whether continuous pumping or intermittent water level controlled
pumping is used.
Average daily pump flow rate
This flow rate is used for continuous pumping rate and also in the calculation of steady
state calculations when intermittent pumping is selected.
Low volume for pump OFF
This variable defines the volume in the tank below which the pump operates at minimum
pumping capacity.
GPS-X Technical Reference