Francis Turbine Set

Francis Turbine Set .

Description of Francis Turbine Set:

Francis Turbine test set comprises a sump tank and centrifugal pump driven by a close coupled electric motor mounted on a welded steel frame fitted with castors. The Francis (reaction) turbine assembly is mounted on the top of the frame together with a panel carrying a bourdon tube pressure gauge (0-2 bar) which measures the turbine inlet head and a push button starter for the pump motor. Water is pumped from the tank to the turbine inlet via a variable area flowmeter (2-20m³/hr) and a hand valve is used to regulate the flow/turbine inlet head. The spent water exhausted from the turbine is discharged back to the tank and a tank drain valve is provided. The turbine case is made in bronze featuring a plexiglass, full diameter end cover providing an observation window through which the student can see the guide vane mechanism in operation. The power generated is absorbed by a disc brake system and measured by a 0-50N spring force balance. The flow of water to the turbine runner is contorted by a ring mechanism which operates guide vanes, the relative position of which determines the amount of water passing to the runner. In addition to the plexiglass end cover of the turbine case, the turbine discharge bend and draft tube are also made of transparent plexiglass.

Experimental Capability of Francis Turbine Set:

The following experiments may be carried out:  

1. Turbine power output versus speed and flow rate at various heads.  
2. Effect of guide vane setting on turbine performance

Specification of Francis Turbine Set: