DESCRIPTION:
Francis Turbine is a reaction turbine, which was developed by an 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 an air tight casing and the casing & 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, radically 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 acrylic sheet for observation of flow on to the runner. This 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 gauges are fitted at the inlet and outlet of the turbine to measure the
total supply head on the turbine.
EXPERIMENTATION:
· To study the operation of a Francis Turbine.
· To determine the Output Power of Francis Turbine.
· To determine the Turbine Efficiency.
UTILITIES REQUIRED:
· Water Supply and Drain.
· Electricity 5 kW, 440V AC, Three Phase.
· Floor Area 2 x 1 m.
TECHNICAL DETAILS:
· Output Power : 1 KW
· Discharge : 1000 LPM (Approx.)
· Supply Head : 10 m (Approx.)
· Speed : 1000 RPM (Approx.)
· Runner: Having Curved Vanes.
· Dynamometer: Rope Brake type.
· Sump Tank : Capacity 200 Ltrs.
· Water Circulation: Centrifugal Pump, Standard Make, Capacity 5 HP Three Phase.
· Discharge Measurement : Pitot Tube with Manometer
· Control Panel Comprises of : L&T make Starter, Mains Indicator, MCB for overload protection.
· Instruction Manual : An ENGLISH instruction manual will be provided along
· With the Apparatus Tanks will be made of Stainless Steel.
· The whole set-up is well designed and arranged in a good quality painted structurer |