Effective Flow

Decisive for the design is the expected wastewater discharge.

The precipitation values are climatically conditioned and regionally very different. Depending on their frequency, the rainfall donations that occur are differentiated into:

The pumping performance of a centrifugal pump is expressed in the form of an H-Q curve, depicting the Flow Q (e.g. in m³/h) and the Head H (e.g. in m) of the pump.

The system H-Q curve depicts the dependency of the total head H_system on the Flow Q.

The system H-Q curve is essentially a parabolic curve representing the relation between the head (pressure) required to handle the respective rate of flow within a pipe system.

German standards DIN 24260, Pt.1 define the operating point (also working point) as the “intersection of the pump H-Q and the system H-Q curves.