What is Pelton Turbine experiment?

What is Pelton Turbine experiment?

To test the Pelton Turbine at different loads and spear valve settings and produce curves that show the turbine performance and the effect of different spear valve settings. The Pelton Turbine is a hydraulic ‘impulse’ turbine, in which one or more water jets hit ‘buckets’ on a wheel.

How do you calculate the efficiency of a Pelton Turbine?

Fluid Input Power = (Mechanical loss) + (Hydraulic losses) + (Useful shaft power output) Where: Hydraulic Losses = (Impeller loss) + (Casing loss) + (Leakage loss) Considering all losses as one term: Then, overall efficiency of turbine becomes: Pelton wheel is directly coupled to a generator to produce electricity.

How does Pelton wheel turbine work?

Pelton turbine – The basic working principle Working principle of Pelton turbine is simple. When a high speed water jet injected through a nozzle hits buckets of Pelton wheel; it induces an impulsive force. This force makes the turbine rotate. The rotating shaft runs a generator and produces electricity.

What is the efficiency of Pelton Turbine?

Pelton turbines can reach up to 95% efficiency, and even on ‘micro’ scale systems 90% peak efficiency is achievable.

Which kind of turbine is a Pelton wheel turbine?

impulse turbine
A Pelton turbine or Pelton wheel is a type of hydro turbine (specifically an impulse turbine) used frequently in hydroelectric plants. These turbines are generally used for sites with heads greater than 300 meters. This type of turbine was created during the gold rush in 1880 by Lester Pelton.

Why is Pelton wheel less efficient?

The overall efficiency of Pelton wheel is approximately 0.85. Because there are losses like mechanical friction loss, aerodynamic drag on the buckets or windage loss, friction along the inside walls of the buckets, nonalignment of the jet and bucket when bucket turns, back splashing and nozzle losses.

What is peloton wheel function?

The Pelton wheel or Pelton Turbine is an impulse-type water turbine invented by American inventor Lester Allan Pelton in the 1870s. The Pelton wheel extracts energy from the impulse of moving water, as opposed to water’s dead weight like the traditional overshot water wheel.

How many blades does a Pelton turbine have?

In this turbine, the number of blades in the runner is usually between 3 and 8.

What are the limitations of Pelton wheel turbine?

What are the limitations of pelton wheel turbine? Limitations of Pelton wheel turbines: These turbines require large operating heads. To generate a given output power under a smaller head, the rate of flow through the turbines has to be higher which requires an increase in the jet diameter.

What are the main features of Pelton turbine?

Pelton Turbine is a Tangential flow impulse turbine in which the pressure energy of water is converted into kinetic energy to form high speed water jet and this jet strikes the wheel tangentially to make it rotate. It is also called as Pelton Wheel.

What are the components of Pelton wheel turbine?

Pelton Turbine – Parts, Working and Design Aspects

• Nozzle and Flow Regulating Arrangement.
• Runner and Buckets.
• Casing.
• Braking Jet.

What is difference between Pelton wheel and Kaplan turbine?

Pelton wheel is an impulse turbine where static pressure head of water is converted into mechanical energy. On the other hand, Francis and Kaplan’s turbines are reaction turbines where dynamic pressure head of water is converted into mechanical energy.