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Technology

Kaplan Turbines

Kaplan turbines are suitable for the utilisation of water energy at low and medium heads (up to 70m) and for medium to high discharges. They may either be single regulated (regulation of runner blades and guide vanes) or double regulated (regulation of runner blades and guide vanes).

Bulb Kaplan Turbines

Bulb turbines are suitable for the utilisation of water heads at low and medium heads, and for medium and high discharge. Like the standard Kaplan turbines they may either be single regulated (regulation of runner blades and guide vanes) or double regulated (regulation of runner blades and guide vanes).

Francis Turbines

Francis turbines are suitable for the utilisation of medium and high heads (up to 450m) and for a full range of discharges.
These turbines may either be horizontal or vertical shaft arrangements and can operate at high efficiency levels.

Pelton Turbines

Pelton turbines with vertical or horizontal shaft are used for schemes that utilise very high heads (up to 700m) and relatively low flows. They can be designed as single or twin runner type, with one, two, four or six nozzles.
The Turgo turbine is a variation on the Pelton

Cross Flow Turbines

Cross-flow turbines are suitable for heads from 7 m to 60 m and effective flow rates ranging from 20 l/s to 800 l/s. It offers an excellent solution that reconciles quality, performance and price. The runner and mechanical parts are made of stainless steel. The transmission between runner and generator is a cogged belt. They have been used very successfully in remote situations in Indonesia, Nepal and Ethiopia.

Other Technologies

Waratah Power is also working with several innovative hydropower technologies with sensitive design characteristics.
These turbines include: Small-scale turbines which are specially designed to be applied in siphon, in parallel, to existing infrastructure such as weirs. Projects utilising this technology have the beneficial characteristics of low-cost, minimal infrastructure interference.

*Cross Flow Turbines image from Ossberger GmbH+Co of Germany