The unit is perfectly self-sufficient, takes up little space and can be easily moved. The hydraulic circuit essentially consists of a high-head centrifugal pump, a flow meter, two pressure gauges theturbine with the transparent end shield, a supply tank and the connecting pipes. An electrically operated centrifugal pump transfers the water under pressure from the main tank to the turbine, simulating thehigh drop and low flowrate conditions as are typical of Pelton turbines. Pelton Turbine Study Unit study unit has been designed for a complete range of tests on Pelton type hydraulic turbines. The purpose of the system is to enable the students to work out the power and torque curves of a Pelton turbine. Next to the nozzle control hand-wheel there is aprofile reproducing the nozzle and the distributor needle on a 1 to 1 scale. A nozzle and a Double needle with hand-wheel control permit the fine adjustment of the turbine supply flow, whilst a jetdiverter makes it possible to prevent exceedingly high runaway velocities.
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Pelton Turbine Test Set is designed for studying the Pelton turbine characteristics under various flow rates and heads. The adjustable nozzle direct a water jet to the runner buckets. Power output can be measured by either dynamometer or generator.The unit is on wheels. The unit consists of a storage tank, a pump, a turbine, a dynamometer, a generator, and measuring instruments.
Experiments:
Power output vs speed for various heads and flow rates.
Efficiency vs speed for a given head and flow rate.
Torque vs speed at various heads and flow rates.
Racing characteristics.
Overall turbine generator efficiency.
The measurements, which can be performed varying the operation conditions, can be easily compared with data resulting from the theory. The educational Mini-Pelton action turbine allows to study the typical parameters of action turbines. The group is supplied with manuals which describe all parts of the Pelton Turbine Study Unit Bench Top Model unit, the installation and utilisation procedures, aswell as many exercises with the relative results. The plant is easy to control and needs a little periodic maintenance.
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The Mini Pelton Turbine Test Set unit consists of a storage tank on a steel base, a pump, a turbine, a dynamometer, and measuring instruments. The adjustable nozzle direct a water jet to the runner buckets. Mini Pelton Turbine Test Set is a self contained bench top set for studying the Pelton turbine characteristics under various flow rates and heads.
Experiments:
Power output vs speed for various heads and flow rates.
Efficiency vs speed for a given head and flow rate.
Torque vs speed at various heads and flow rates.
Racing characteristics.
The unit consists of a storage tank, a pump, a turbine, a dynamometer, and measuring instruments. The adjustable nozzle direct a water jet to the runner buckets. Compact Pelton Turbine Test Set is a self contained bench top set for studying the Pelton turbine characteristics under various flow rates and heads.
Experiments:
Efficiency vs speed for a given head and flow rate.
Racing characteristics.
Torque vs speed at various heads and flow rates.
Power output vs speed for various heads and flow rates.
Water turbines are turbomachines utilising water power. The water jet is redirected by approximately 180 in the blades. The impulse of the water jet is transmitted to the Pelton wheel. The Pelton turbine is a type of impulse turbine; such turbines convert the pressure energy of water into kinetic energy entirely in the distributor. During the conversion, the water jet is accelerated in a nozzle and directed onto the blades of the Pelton wheel tangentially.
Learning Objectives And Experiments:
Graphical representation of characteristic curves for torque, power and efficiency
Design and function of a Pelton turbine
Determination of torque, power and efficiency.
Turbine load using the wear-free and adjustable eddy current brake
Force sensor to determine the torque on turbine shaft
Turbine to place upon the base unit
Functioning and operating behaviour of a Pelton turbine
Constant pressure of the turbine represents in practice the head and is adjusted via
Transparent housing for observing the Pelton wheel and needle nozzle
Different nozzle cross-sections via adjustable nozzle needle
Optical speed sensor for measuring the turbine speed.
Recording the curves of a Pelton turbine and investigating the influence of the nozzle cross-section
Force sensor at the turbine inlet
Transparent front panel for observing the operating area
Non-contact speed measurement at the turbine shaft and force sensor at the brake for measuring the torque
Loading the turbine by use of a band brake
Adjustable nozzle needle for setting different nozzle cross-sections.
