The side-channel pump works primarily as a centrifugal pump and, depending on liquid level, can also act as a positive displacement pump. This means, as a special feature, the side-channel pump also permits gases to be pumped.

The pump being investigated pumps water in a closed circuit. The Trainer includes two centrifugal pumps, one piston pump as a positive displacement pump and a self-priming side-channel pump. In the process, the performance data of the pump and pressure losses in the pipeline are recorded. The speed of the motors for the centrifugal pumps is variably adjustable by a frequency converter. All motors are mounted on swivel bearings, so the torque can be measured by way of a force sensor, enabling the mechanical drive power output to be determined. The centrifugal pumps can also be operated in parallel or in series configuration. Each pump is driven by a separate three-phase AC motor.  One free position is likewise equipped with a reversible three-phase AC motor with variable speed. This position can be used for mounting of any pump. Relevant measured values can be read on digital displays. The performance data of the pump and losses in the pipeline are calculated by the software and represented by characteristic curves. At the same time, the measured values can also be transmitted directly to a PC via USB. The data acquisition software is included. The operating point of the pump can be determined from these characteristics. Experiments demonstrate the basic operating behaviour of various pump types.

Specifications:

Operation of centrifugal pumps in parallel or series configuration.

Experiments relating to key issues in pump engineering.

Three-phase AC motors for centrifugal pumps and additional motor with variable speed by frequency converter.

Free position for additional pump.

Comparison of various pump types: centrifugal pump, piston pump, side-channel pump.