Wednesday, September 29, 2010

Types of Hydro Turbines

Impulse Turbine (Pelton wheel) for high heads.
Reaction Turbine (Francis) is used for medium heads.
Propeller Turbine (Kaplan) is used for low head.

In impulse turbine high velocity water from nozzles creates impulse on the buckets of pelton wheel.
In reaction turbine (Francis) the water pushes the turbine-blades by reaction.
In propeller turbine (Kaplan) the blades are pushed by propelling action of the water.

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