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Content archived on 2022-12-27

CONVERSION OF A RETAINING WEIR FOR ELECTRICITY PRODUCTION USING AN INFLATABLE CREST WEIR

Objective

To demonstrate how, using relatively simple techniques, existing weirs built for flood control and river bed protection can be exploited for electricity production.
Some problems were encountered removing old concrete and with dewatering whilst building the power house foundations, and there was a delay caused because approval for the water rights took longer than expected. There have also been some problems with the inflatable weir, which can be subject to severe oscillations at high water: investigation are continuing to overcome this problem.
A 50 metre wide weir is being fitted with an inflatable extension to give an extra head of 0.9 metres, and two turbines are being installed at a new hydro installation at the side of the weir.
Other innovations include a special Detritus disposal channel, an automatic screen cleaning device and an airation device in the turbines. The whole installation has been carefully designed to merge in with the surroundings.

Head 5,6 metres
Flow 2 x 26,5 m3/s + 2,65 m3/s = rd. 56 m3/s
Turbine 2 Kaplan + 1 Francis
Turbine power (each) 2000 kW
Turbine speed 750 rpm
Generator synchronous
Generator speed 600 rpm
End-use grid connected

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Topic(s)

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Call for proposal

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Funding Scheme

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DEM - Demonstration contracts

Coordinator

SAALACHKRAFTWERK AINRING GMBH
EU contribution
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Address
SAALACHAU 2A
8229 AINRING
Germany

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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

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