Centrifugal pumps are turbomachines that are used for conveying fluids. The HM 150.04 unit can be used to study a centrifugal pump and to record a typical pump characteristic curve.
The experimental unit includes a self-priming centrifugal pump, a ball valve on the outlet side and manometers on the inlet and outlet side. It is driven by an asynchronous motor. The speed is infinitely adjustable by using a frequency converter. A ball valve is used to adjust the head.
In experiments, the operating behaviour of the pump as a function of the flow rate is studied and displayed in characteristic curves. The motors speed and electrical power are displayed digitally. Pressures on the inlet and outlet side are displayed on two manometers. The experimental unit is positioned easily and securely on the work surface of the base module. The pump draws in water from the tank on the base module. The flow rate is determined volumetrically by flowing back into the measuring tank.
The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
Learning Objectives / Experiments
Familiarisation with operating behaviour and characteristics of a centrifugal pump through experiments
Recording the pump characteristic curve at a constant pump speed
Measuring the inlet and outlet pressure
Determining the flow rate
Recording the pump characteristics for different speeds
Power and efficiency curves
Measuring the electrical drive power
Determining the hydraulic power
Calculating the efficiency
Specification:
Investigation of a centrifugal pump
Drive with variable speed via frequency converter
Ball valve to adjust the head
Manometers on the inlet and outlet side of the pump