Francis Turbine Apparatus
(FR-009)

1 Water flow inlet. 2 Pressure gauge. 3 Runner blades. 4 Guide vane blades. 5 Guide vane adjustment arm. 6 Turbine housing. 7 Turbine disc. 8 Magnets disc 9 Shaft coupled with the spring 10 Braking unit

  • Design and function of a Francis turbine.
  • Determination of torque, power & efficiency.
  • Deriving the graphical representation of characteristic curves for torque, power and efficiency
  • Performance of a Francis turbine at different flow rates.
  • The effect of different guide vane settings on turbine performance.
  • Turbine
    • Output: 30 watt at 350 rpm approx 42 L/M, 4m Head
    • 7 blades
    • blade width: 5 mm
    • Diameter: 60 mm
    • 7 guide vanes
  • Measuring Ranges
    • force: 0 to 25N
    • pressure: 0…1,0 bar
  • Francis Turbine Apparatus (FR - 009)
  • Hard Copy User Manual

The Francis turbine apparatus is a bench top kit which investigates the operation of a Francis turbine and study the effect of the distributor guide vanes angle. The apparatus consists of a miniature Francis turbine and a braking device.

                                     
  • The educational unit is considered a model of a Francis turbine that demonstrates the function of a reaction turbine.
  • The experimental unit consists of rotor, distributor with adjustable guide vanes, a brake mechanism for loading the turbine and a housing with a transparent front panel.
  • The educational unit also includes a manometer that indicates the water pressure at the turbine inlet.
  • The unit includes spring balances that determines the turbine torque.
  • The transparent cover enables the observation of the water flow, the rotor and the guide vanes during operation.
  • The angle of attack and so the power of the rotor can be changed by adjusting the guide vanes.
  • The experimental unit is positioned easily and securely on the work surface of the main hydraulic unit.
  • The water is supplied and the flow rate measured by the main hydraulic unit.
  • The water flows to the distributor through the spiral housing, the flowing water is accelerated in the distributor by the adjustable guide vanes and directed onto the blades.
  • The redirection and further acceleration of the water in the rotor generates an impulse which is transmitted to the rotor.