What is the main difference between impulse turbine and reaction turbine?

The main differences between Impulse and Reaction turbines are, all hydraulic energy is converted into kinetic energy by a nozzle in the Impulse turbine and whereas In Reaction turbine Only some amount of the available energy is converted into kinetic energy.

What is reaction turbine Slideshare?

A Reaction Turbine is a type of turbine that develops Torque by reacting to the pressure or weight of a fluid The operation of reaction turbines is described by Newton’s Third Law Of Motion (action and reaction are equal and opposite). Reaction turbines are medium to low-head, and high-flow rate devices.

What is the difference between Francis turbine and Kaplan turbine?

General differences between Francis and Kaplan turbines Kaplan turbine is more compact in cross-section and has lower rotational speed to that of Francis turbine. In Kaplan turbine, the water flows axially in and axially out while in Francis turbine it is radially in and axially out.

What are the advantages of reaction turbine?

Advantages of Reaction Turbine It has high hydraulic efficiency. This type of turbine has a high working speed. It is easy to construct. The blades have high efficiency as compare to the impulse turbine.

What is type of flow in reaction turbine?

Mainly two types of reaction turbine: ( i ) Outward radial flow reaction turbine (ii) Inward flow reaction turbine.

Why is it called reaction turbine?

The nozzle-guide vanes only guide the flow for the rotors. The turbine is driven by the reaction force resulting from the acceleration of gases through the converging blade passage and, hence, the name.

What are parts of reaction turbine?

Francis turbine rotor typically has nine or more fixed blades. Water enters directly above and around the runner, then the waterfalls and turns the turbine. The other main components are the draft tube, gate, and spiral in addition to the corridor.

What is meant by impulse and reaction turbine?

Impulse turbines change the direction of flow of a high velocity fluid or gas jet. Reaction turbines develop torque by reacting to the gas or fluid’s pressure or mass. The pressure of the gas or fluid changes as it passes through the turbine rotor blades.

What is difference between Pelton turbine and Francis 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.