axial-flow pump the pumping medium flows through the impeller (here a propeller) in the axial direction. In axial-flow pumps, the pressure build-up is not achieved by the centrifugal force but, like the aerodynamic principle, by the propeller blade. Therefore these pumps are also known as propeller pumps. They are not self-priming and the propeller must always be covered by the pumping medium. Axial propeller pumps are used when high flow rates and a small head are needed. The typical areas of application for propeller pumps are drainage systems, wastewater treatment plants and cooling water supply systems.
The trainer includes an axial propeller pump, a tank and pipelines with generously designed pipe cross-sections. The pump is powered in conjunction with the Universal Drive and Brake Unit. The closed water circuit means that the trainer can be used independently of the water system.
The trainer is equipped with measuring elements for the pressures at the inlet and outlet of the pump. A temperature sensor measures the water temperature. The flow rate is measured with an electromagnetic flow meter. The measured values are read from digital displays The well-structured instructional material sets out the fundamentals and provides a step-bystep guide through the experiments.
The unit shall perform the following experiments and investigations:
Learning Objectives / Experiments
In combination with Universal Drive and Brake Unit
Determination of the pressure/volume.characteristics
Determination of the power requirement of the pump
Determination of the hydraulic power
Determination of the efficiency
Determination of the head
Determination of the system characteristics
Specification:
Investigation of an axial-flow pump
Closed water circuit
Powered by Universal Drive and Brake Unit
Water tank with sight glass
Determination of the flow rate with the electromagnetic flow rate sensor
Digital display of flow rate, pressure and temperature
Software for data capture via USB under Windows Vista or Windows 7