Francis Turbine is a reaction Turbine, which was developed by English born American Engineer Sir J.B. Francis. The water enters the turbine through the outer periphery of the runner in the radial direction and leaves the runner in axial direction and hence it is called a mixed flow turbine. As the water flows to the runner, a part of pressure energy goes on changing into kinetic energy. Thus, the water through the runner is under pressure. The runner is completely enclosed in air tight casing and runner is always full of water.
The present set-up consists of a runner. The water is fed to the turbine by means of centrifugal Pump, radially to the runner. The runner is directly mounted on one end of a central SS shaft and other end is connected to a brake arrangement. The circular window of the turbine casing is provided with a transparent. The circular window of the turbine casing is provided with a transparent acrylic Sheet for observation of flow on to the runner. The runner assembly is supported by thick cast iron pedestal. Load is applied to the turbine with the help of brake arrangement so that the efficiency of the turbine can be calculated. A draught tube is fitted on the outlet of the turbine. The Set-up is complete with guide mechanism. Pressure and vacuum Gauge are fitted at the Inlet and Outlet of the turbine to measure the total supply head on the turbine.
Experiment - To study the operation of a Francis Turbine.
- To determine the Output Power of Francis Turbine
- To determine the Turbine Efficiency.
Technical Specification
| Model | 1.33 HP | 2 HP | 5 HP |
| Output Power | 1.33 HP/1KW | 2 HP/1KW | 5 HP/3.75KW |
| Discharge | 1000 LPM (Approx.) | 1000 LPM (Approx.) | 2000 LPM (Approx.) |
| Supply Head | 10 m | 10 m | 15 m |
| Rope Brake Dynamometer | Dia 200 mm | Dia 200 mm | Dia 300 mm |
| Sump Tank | Capacity 300 Liters | Capacity 300 Liters | Capacity 600 Liters |
| Water Circulation | Capacity 5 HP | Capacity 5 HP | Capacity 15 HP |
| Centrifugal Pump | Three Phase | Three Phase | Three Phase |
| Speed | 1500 RPM (approx.) |
| Runner | Having Curved Vanes |
| Discharge Measurement | Pitot tube with Manometer |
| Control Panel | Star/ Delta Starter, Mains Indicator, MCB for overload protection |
