Francis Turbine Apparatus
(FR108)
- 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: 18.3 watt at 817 rpm approx 93.5 L/M, 5m Head
- Torque arm: 0.033 m.
- 14 blades
- Blade width: 12 mm
- Diameter: 145 mm
- 7 guide vanes
- Measuring Ranges
- force: 0 to 25N
- pressure: 0…2.5 bar
- Francis Turbine Apparatus (FR108)
- 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.