Myrawerk
The Myrawerk is a former storage power plant near Muggendorf in Lower Austria .
history
In 1895, Oskar von Rosthorn made the decision to build a hydroelectric power station in the Myra Falls area . In 1898 he had acquired the necessary land and rights and worked out two projects. He presented this to the authorities and received the building permit.
Tourist associations protested against this decision by the authorities - in 1885, for example, the Austrian Tourist Club had opened a climbing facility here - and municipalities that wanted to maintain this tourist attraction. Lawsuits were fought through to the last instance, but the decision was made in 1902 in favor of the client.
However, the realization of the project was delayed because there were no buyers for the electricity generated here. Siemens & Halske, for example, developed a project according to which the nearby state railway line should be electrified. However, the Ministry of Railways rejected this project.
Between 1903 and 1906 negotiations were held with the Austro-Hungarian War Ministry about the power supply for the companies in Wöllersdorf and Blumau . The related discussions remained without result.
From 1909 to 1910, Siemens-Schuckert tried to sell the electricity it produced to the communities of Gutenstein , Fischau , Theresienfeld , Felixdorf and Wiener Neustadt . This time, too, no agreement was reached.
In 1910, Siemens-Schuckert approached Wiener Neustadt again to sell the city the electricity it generated. The negotiations failed again, whereupon the Vienna- based real estate bank continued talks with Wiener Neustadt. This time the power plant that was still to be built was to be sold in full to the city.
As the newly built urban caloric power plant had already reached its capacity limit, Wiener Neustadt showed interest this time and accepted the offer, whereupon work began immediately. On October 13, 1914, an 8-day trial operation was started, which then immediately went into normal operation.
The Myrawerk power plant was shut down in 1975.
investment
In the area of the Karner-Wirt sawmill, a concrete dam was built with a 6 meter wide overflow and 2 meter wide base gates. The water level here was about 5 meters.
On the right bank, a 310-meter-long pressure tunnel, blasted out of the rock and lined with concrete , about 1.3 meters wide and about 1.8 meters high, branched off here , which fed the water of the Myrabach to the moated castle with a gradient of 1 percent. A pressure pipeline made of pipes made by the Villacher Maschinenfabrik with a clearance of 65 centimeters led from this to the power house, which was equipped with two Pelton turbines from the Leobersdorfer Maschinenfabrik . The height difference between the turbine shaft center and the overflow edge of the dam was around 96 meters.
The water emerging from the power house was led into a compensation pond, which was formed by an earth dam 6 meters high and 5 meters wide.
Electric power was generated with a voltage of 5,000 volts and a frequency of 42 Hertz, which was transformed to 15,000 volts and initially conducted via underground cables and from Waldegg via overhead lines to Wiener Neustadt. The annual output was around 1.5 million kilowatt hours around 1920.
The Myra Falls were not affected by the construction work itself. During the time that the Myrawerk was in operation, however, the falls dried up.
literature
- Journal of the Austrian Association of Engineers and Architects , Vienna, 1920, page 185
Footnotes
- ^ History of the Myra Falls. In: www.myrafaelle.at. Austrian Tourist Club , accessed on May 21, 2016 .
- ↑ THAL - Muggendorf Municipality Water and Hiking World ( Memento from August 4, 2012 in the web archive archive.today )
Coordinates: 47 ° 54 ′ 52 ″ N , 15 ° 56 ′ 7 ″ E