Installing your turbine
A quick, simple and economical installation
A completely immersed turbine, quiet and integrated into the surrounding environment
Our turbine are positioned horizontally, vertically or inclined without any significant impact on their efficiency.
They are always associated with their draft pipe (delivered in standard) and optionally with the extension draft pipe (option for flows above 550 l/s). Design around standard diameter, they can be easily preceded or extended with any pipe available on the market.
They are completely silent, because they are immersed, and return the flow under the downstream water level of the restitution canal.
Simple, reliable and requiring only limited maintenance! With a camshaft directly driven by the propeller blades, the friction is reduced to strict minimum. The bearings are the only parts put under any strain, but, even so, are designed to last 100.000 hours (more than 10 years!)
The maintenance recommend by Turbiwatt is limited to:
• A visual control of the upstream screen cleaner/trash rack (leaves, branches, debris...)
• Greasing of the bearings (schedule depending on the head and flow)
• An annual visit in particular a visual control of the anode (in case of premature corrosion depending on the quality of the water), the state of the grease and the electrostatic discharge brush and eventually renewing these components.
• A big maintenance visit every five years with preventive change of the bearings.
Turbiwatt and their distributors can propose a maintenance contract.
The common installation system in a site generally consist of:
• Upstream head race with screen cleaner
• Penstock / water chamber in which the turbine is installed
• A draft pipe which the turbine is fixed to, eventually an extension draft pipe
• Tail race
In the case of an industrial installation, the head race, the penstock and tail race can consist of standard pipes. A study will have to be carried out in order to evaluate the pressure drop. An easy access to the turbine must be guaranteed to simplify the installation and maintenance.
The turbine must function "without air". Failing this, its efficiency will decline considerably, or even drain the turbine. Hence, it is essential to have a minimum upstream water level (of 40 to 80 cm depending on the model of turbine and flow) to prevent the vortex phenomenon and immersing the draft pipe (or extension) downstream under a minimum of 10 cm water in the tail race. Likewise, the pipe assembling and joints must be carried out carefully in order to prevent any air intake.