Forach power plant
| Forach power plant | ||
|---|---|---|
 |
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| location | ||
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| Coordinates | 47 ° 25 '39 " N , 9 ° 44' 6" E | |
| country |
 Austria
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| place | Dornbirn | |
| Waters | Mullerbach | |
| Kilometers of water | km 0.11 (Müllerbach) | |
| Height upstream | 417 m | |
| power plant | ||
| owner | City of Dornbirn | |
| operator | City of Dornbirn | |
| construction time | probably 1900-1901 | |
| Start of operation | probably 1901 | |
| Listed since | 2011 | |
| technology | ||
| Bottleneck performance | 0.09 megawatts | |
| Average height of fall |
4.28 m | |
| Expansion flow | about 2 m³ / s | |
| Turbines | 1 | |
| Generators | 1 | |
| Others | ||
The power plant Forach is in Dornbirn , Vorarlberg , Austria , in the district Forach , in the district of Rohrbach befindliches small hydroelectric power plant and one of the power stations on Müller Bach .
The Forach power plant on the Müllerbach is the lowest level of around a dozen power plants in the past and is currently also one of the last to be activated.
history
The residential and operational building in which the Forach power plant is installed was probably built in 1900 by the JG Ulmer company from Dornbirn. On the generator, next to the manufacturer's name “Siemens & Halske Berlin”, there is an indication: “Built 1901”. The first water law permit would have ended after 90 years in 1993, but in 1926 this power plant, like the others on the Müllerbach, was granted an unlimited use permit. Around 1934 the power station was taken over by the nearby textile company FM Rhomberg (JG Ulmer, which previously owned the power station, had to sell due to the economic crisis). In the room next to the power house, now a studio, was a stationary locomobile with which the generator of today's show power plant could be driven via a transmission if the Müllerbach had too little water. The locomobile has not been preserved, the transmission and belts were dismantled for the renovation from 2005.
After FM Rhomberg closed down ( bankruptcy 1993), the power plant was temporarily shut down. In 1995 it was bought by the city of Dornbirn and operated from 1997 until October 19, 2004. For economic reasons, it was then switched off and a new power plant was built in a newly built extension. Today's Forach power plant.
The previous Forach power plant was renovated by the Vorarlberg Technical Association from 2005 and is now made available to the public as a Forach show power plant.
The entire property was listed on October 24, 2011.
Power house
Power house new
The power house, in which the turbine, the generator and the control of the Forach power plant are located, is located in a combined residential / operational building below the floor.
The maintenance of the small power station Forach is the responsibility of the waterworks of the city of Dornbirn.
Electrotechnical data
The generator is a three-phase asynchronous machine from Schorch with a maximum power of 90 kW at 400 V (158 A ) at 1050 rpm.
Hydraulic data
The water for the Forach power plant is taken from the Müllerbach, which can have different water flow depending on the season and with regard to the amount of residual water in the Dornbirner Ach . In the area of the Forach power plant, the Müllerbach has a usable maximum of 1850 liters / second.
This water is used by a through-flow turbine from Wasserkraft Volk AG ( Gutach ), which allows a maximum through-flow of 2000 liters / second. The flow turbine is divided into three parts and is automatically adapted to a lower water flow by flowing through one, two or three chambers (one chamber corresponds to approx. 18 kW, 2 chambers approx. 30 to 50 kW, three chambers full load and approx. 96 kW output power). Maximum rotation 162 / min at a raw head of about 4.28 meters.
transmission
In order to bring the low-speed cross-flow turbine up to the nominal speed of the asynchronous generator, a gear from A. Friedr. Flender (pening) is interposed and the speed is brought from a maximum of 162 / min to 1050 / min (generator).
Forach show power plant
The old power house, now the “Forach Show Power Plant”, which opened on September 15, 2012, is also located in the same building. The historic power plant was restored by the Vorarlberger Technischer Verein (VTV) and the exhibition designed. The show power plant is intended to enable and ensure a glimpse into the industrial history of the city of Dornbirn.
The show power plant is open daily from 8:00 a.m. to 9:00 p.m.
Technical data show power plant
- regulated horizontal-axis twin turbine (Francis turbine, demonstration operation)
- Water flow (turbine) max. 1.8 m 3 / s,
- Net usable height 6.10 m,
- Generator from Siemens Halske (demonstration operation)
- Power: 4.1937 kVA
- Voltage: 3100 volts
- Current: 18.5 A.
- Speed about 300 / min,
- Standard energy capacity: 455 MWh.
The original generator from Siemens & Halske ( Berlin ) had an operating voltage of 3100 volts and a maximum output of 100 kW at 300 rpm. After the conversion in the 1930s to 380 V operating voltage, the generator still had an output of around 60 to 89 kVA.
Vorarlberg Technical Association
The show power plant is looked after on a voluntary basis by the Vorarlberger Technischen Verein, steam and drive engine working group, Adolf Gstöhl and Walter Bröll. The Vorarlberg Technical Association was founded in 1908.
The association's tasks include designing the exhibition, maintaining exhibits and guided tours of the museum. Documentation and research into the industrial history of Vorarlberg and the collection of other objects related to Vorarlberg industrial technology are also carried out. The area of activity is primarily concentrated on Vorarlberg. The chairman of the association is Frank Böhler.
literature
- Martin Trunk: Functional consideration of the Müllerbach and the resulting consequences of an endowment of the Dornbirner Ache . Thesis at the University of Natural Resources and Life Sciences, Vienna, Dipl.-Arb., 1992.
Web links
- Vorarlberg Technical Association .
- Handover of the small power plant in Forach ( Vorarlberger Nachrichten ).
- Small power station in Forach has been restored (Dornbirn Online).
Individual evidence
- ↑ Martin Trunk: Functional consideration of the Müllerbach and the resulting consequences of an endowment of the Dornbirner Ache . Thesis at the University of Natural Resources and Life Sciences, Vienna, Dipl.-Arb., 1992, p. 7.
- ↑ Martin Trunk: Functional consideration of the Müllerbach and the resulting consequences of an endowment of the Dornbirner Ache . Thesis at the University of Natural Resources and Life Sciences, Vienna, Dipl.-Arb., 1992, p. 36.
- ^ Decision of the Federal Monuments Office of October 18, 2011, GZ: 55.253 / 2/2011.
- ↑ Wasserwerk website ( Memento of the original from October 6, 2014 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. .
- ↑ Martin Trunk: Functional consideration of the Müllerbach and the resulting consequences of an endowment of the Dornbirner Ache . University paper at the University of Natural Resources and Life Sciences, Vienna, Dipl.-Arb., 1992, states on p. 44 an output of 89 kW.
