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Francis Turbine

Francis Turbine

Product Details:

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Product Description

FRANCIS TURBINE
The Francis turbine is part of the reaction turbines which convert the pressure energy of water into kinetic energy in the distributor and in the rotor. Francis turbines are used at medium heads and large flow rates. The turbine power is controlled by adjusting the guide vanes. In practice, Francis turbines are used in run-of-the river power plants and in storage power plants.
The Francis turbine is an accessory for the trainer. The experimental unit consists of the rotor, the distributor with adjustable guide vanes, a band brake for loading the turbine and the spiral housing with a transparent front panel. The transparent cover enables you to observe the water flow, the rotor and the guide vanes during operation. The angle of attack and the cross-section of flow are adapted to the speed and power of the turbine by adjusting the guide vanes.
The pressure at the turbine inlet is recorded with a pressure sensor. A force sensor and a speed sensor are attached to the band brake. Thus, the mechanical power output of the turbine can be determined. Speed, torque and pressure are displayed on the switch cabinet of and processed further in the software. Water supply and flow rate measurement are provided by .
The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.The unit perform the following experiments ar investigations:
  • Learning Objectives / Experiments
  • Determination of mechanical output
  • Determination of efficiency
  • Recording of characteristic curves
  • Investigation of the influence of the guide vane position on the power output
  • Velocity triangles
Specification:
  • Recording the curves of a Francis turbine and investigating the influence of the guide vane position
  • Transparent front panel for observing the operating area
  • Loading the turbine by use of the band brake
  • Adjustable guide vanes for setting different angles of attack
  • Recording the torque via band brake and force sensor
  • Force sensor at the turbine inlet
  • Speed, torque and pressure displayed on the switch cabinet of Characteristic Variables of Hydraulic Turbomachines
  • Water supply, flow rate measurement and data processing software via Characteristic Variables of Hydraulic Turbomachines Unit
Technical Data:
  • Turbine
  • Output: approx. 350W at 1500min-1, 270Lmin,
  • H 15m
  • Max. speed: 3000min-1
  • Rotor
  • 11 blades medium diameter: 60mm
  • Distributor
  • 7 vanes
  • Angle of attack: 0...20°
Measuring ranges:
  • Torque: 0...9,81Nm
  • Pressure: 0...4bar abs.
  • Speed: 0...3000min-1
Dimensions and Weight:
  • LxWxH: 590 x 510 x 490mm
  • Weight: approx.45kg
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