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Hydro Turbines
Hydro Energy - Hydro Turbines

There are basically three types of hydro turbines: The Pelton, Francis and Kaplan turbines. This separation was made according to the operation area of each turbine which is displayed in the diagram shown below:
 
Types of Hydro Turbines
Types of Hydro Turbines


The basic characteristics of each turbine type are the following:
 
The PELTON turbine  
PELTON
PELTON
Robust design; low investment

Low basic area for the turbine housing with easy design, because of the reasonable construction cost

Flat course of efficiency; pelton turbine is especially suitable for variable flow
 

The FRANCIS turbine
FRANCIS
FRANCIS
FRANCIS
FRANCIS
Robust design; small turbine-space

High revolutions (engine speed) per minute; mostly direct coupling with the generator

Suitable (aptitude) for strong variation of under-water level
   
The KAPLAN turbine  
KAPLAN
KAPLAN
Suitable for high flows.

Small sensitivity against ice, detrial and washing - ashore broken rock - glays, it is not necessary to use a rake for fine gravel - sand granulate