| The Gaming hydropower plant in Austria has been used for two purposes since 1926: producing energy and supplying drinking water.
After more than 70 years of operation, one of the two turbines was replaced at the plant in 1998. The second machine was kept as a standby unit. The new 5.5 MW unit generates 42 GWh annually, this means that the annual use of the turbine is on average at approximately 90 % load, without any interruption of the drinking water supply.
Equally high demands are made on the bypass, which automatically continues to supply drinking water in the event of a power loss. This is achieved by means of a specially designed 700/900 mm hollow-jet valve, which operates at a counter pressure of only 2.5 m at the tailwater end.
Technical data:
Runner inlet diameter: 940 mm
Net head: 186.95 m
Discharge: 3.3 m³/s
Rated speed: 1000 rpm
Power: 5,640 kW
Voith Siemens Hydro’s share:
1 horizontal Francis turbine including governor, butterfly valve and synchronous outlet valve and penstock |
