The conversion of pressure energy into kinetic energy in the rotor is characteristic for reaction turbines.
The experimental unit is placed upon the base unit. The two units together provide the basic experiments to get to know the operating behaviour and the most important characteristic variables of reaction turbines.
The water jet discharged from the rotor which drives the turbine according to the reaction principle can be observed during operation. This facilitates the understanding of the principle of operation and the underlying laws (eg. momentum). Consists of a rotor mounted in a transparent housing and a loading device outside of the housing. The eddy current brake generates a defined load. The eddy current brake is specially developed. It is wear-free and can be finely adusted.
The torque delivered by the turbine is determined via an electronic force sensor. The speed is measured with an optical speed sensor. The measuring values are transferred to the base unit.
The water supply and the flow rate measurement are realised with the base unit. A pressure control included in enables the
recording of characteristics at a constant head.
All the advantages of software-supported experiments and evaluation are offered by the software in.
The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
Learning Objectives / Experiments
Principle of operation of an action turbine
Characteristic curves at constant head
Relationship between torque and speed
Efficiency dependent on speed
Flow rate dependent on speed
Hydraulic power and mechanical power dependent on speed
Evaluation of measuring values and characteristics based on the theory
Partial load behaviour with controlling the number of nozzles in comparison to throttle control
Specification
Turbine to place upon the base unit for turbines
Functioning and operating behaviour of an action turbine
Transparent housing for observing the rotor
Distributor with 4 nozzles, active nozzles adjustable by valves
Constant pressure of the turbine represents in practice the head and is adjusted via base unit for turbines
Turbine load using the wear-free and adjustable eddy current brake
Force sensor to determine the torque on turbine shaft
Optical speed sensor for measuring the turbine speed
Water supply, flow rate measurement and unit-specific software data acquisition and operation via base unit for turbines