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

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

The basic difference between impulse and reaction turbine is that in impulse turbine steam flows through the nozzle, while in reaction turbine Steam flows initially from guide mechanism and then from moving blades.

What is the difference between impulse axial and reaction turbine?

While the impulse turbine gets the kinetic energy and the momentum transferred by the water mass of a high-pressure jet, a reaction turbine is subjected to the pressure or potential energy generated by the weight of water at the bottom of the head working on one side of its blades called pressure side.

What is difference between reaction and impulse?

In reaction turbine steam first flows through the guide mechanism and then flows through the moving blades. In impulses turbine, steam strikes on the moving blades with kinetic energy only. But in the reaction turbine, the steam which glides over the moving blades possesses both pressure and kinetic energy.

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

The main difference between the impulse turbine and the reaction turbine is that, in the former, there is a pressure drop across the fixed blades only, whereas in the latter, there is a pressure drop across both the fixed and the moving blades.

Which is reaction turbine?

Reaction turbines are the turbines that use the pressure as well as the velocity of the moving water to rotate. Reaction turbines are placed in the water stream where the water enters the casing tangentially. After rotating the blades the water axially leaves the casing of the turbine.

What is meant by reaction turbine?

Definition of reaction turbine : a turbine with rotating blades curved and arranged so as to develop torque from gradual decrease of steam pressure from inlet to exhaust — compare impulse turbine.

What is a impulse turbine?

The impulse turbine is the simplest type of turbine. It consists of a group of nozzles followed by a row of blades. The gas is expanded in the nozzle, converting the high thermal energy into kinetic energy.

What is the difference between axial and radial flow?

In fluid motion, axial flow is the movement of the fluid in an up and down, cyclic pattern. The rotation of axial flow impellers makes the fluid move downwards and later upwards before being pushed down again to repeat the cycle. Radial flow impellers are designed to move fluid sideways during rotation.

What is impulse and reaction steam turbine?

Impulse turbine Reaction turbine. Steam flows. Steam flows in the impulse turbine through nozzles and strikes the moving blades. Steam flows in the reaction turbine through fixed blades and then flows over moving blades.

Which is an example of impulse turbine?

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

What do you mean by impulse turbine?

Definition of impulse turbine : a turbine in which the rotor is driven by fluid jets impinging directly against the blades — compare reaction turbine.

Why is it called reaction turbine?

The turbine is driven by the reaction force resulting from the acceleration of gases through the converging blade passage and, hence, the name.