axerna is a project developer in the renewable energy industry with a focus on hydroelectric power projects. We assist our customers during all stages of the project development process - project/site identification, feasiblity studies & commercial analysis, project financing, power plant design, project management & construction supervision, and operation & maintenance of the power plant.
This type of turbine is used in low pressure plants that use large quantities of water with heads less than 40 meters.
Kaplan Turbines are impeller-turbines, where the runner turns in the water flow like a ship´s propeller. Runner blades and wicket gate are designed adjustable, to ensure an adaption to an unsteady water level and a changing head. These turbines are mostly used in run-of-river power stations.
This type of turbine is regarded as the "all-rounder" and commonly used for medium heads from 20m - 150m.
The Francis-Turbine is a type of turbine, where the water ows radial from the outside inward and sluices axial. Only the wicket gate can be adjusted, therefore it is particularly used with power plants which have a relative constant discharge.
The Pelton Turbine is a type of turbine, which reminds of a tradtional water wheel regarding appearance and mode of operation. The water is conducted through nozzles to the Pelton-cups, is being deflected for almost 180 degrees and releases its energy almost compeltely to the turbine.
This turbine is used at sites featuring high heads up to about 1000 m and low quantities of water, it is the typcial type for plants in high mountains or for reservoir power stations.