Murfall power plant

Murfall power plant
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location
Coordinates	47 ° 6 '29 "  N , 13 ° 28' 17"  E Coordinates: 47 ° 6 '29 "  N , 13 ° 28' 17"  E
country	Austria  Salzburg
place	Muhr
Waters	Mur
power plant
owner	Salzburg AG
Start of planning	1919
Start of operation	1922
technology
Bottleneck performance	0.78 megawatts
Average height of fall	68 m
Turbines	2 Francis turbines
Others

The Murfall power plant ( Murfall power plant ) is a day and week storage power plant near Muhr in the State of Salzburg and part of the Lungau power plant group of Salzburg AG for energy, traffic and telecommunications . The Murfall power plant was the starting point for a comprehensive power supply for the Lungau .

history

In 1919, several municipalities in Salzburg's Lungau, together with the State of Salzburg, founded a public electricity company with the aim of building a power station on the Mur to generate electricity.

For cost reasons, the variant had to be dropped in which a reservoir would have been built about 300 meters upstream from the current weir. A more cost-effective variant was implemented after the approval process from August 1919.

A concrete weir system was built, which first directed the water of the Mur into a 93-meter-long gravity tunnel with a cross-section of 1.5 meters by 1.8 meters and then into a 120-meter-long penstock with a 40 centimeter clearance, with a bend The course of the river was cut off and a height difference of 68 meters was achieved. During this construction work, the Mur was moved into a specially constructed bypass ditch on the left bank.

As a transition between the studs and the pressure pipe has a water lock installed, the construction made it possible to build later, a second pressure conduit for feeding a second turbine, without affecting the operation of the Murfallkraftwerks.

In order to enable the work on the power house below the last step of the Murfall, an eight meter high protective wall was erected against the spray of the waterfall.

Since those responsible feared an increase in wages - which actually occurred - during the winter months, the roof of the future power house with 108 square meters of floor space was erected and covered in the correct position on temporary wooden supports. An outer wall was attached to the supporting structure so that the power house could be built in the now enclosed and heated construction site, regardless of the weather.

The Murfall power plant was built according to plans by the Salzburg civil engineering office A. Buchleitner and K. Krieger, which was also the site manager, from the Leoben branch of the construction company Pittel + Brausewetter . By Maschinenfabrik Andritz who came turbine installation and the electrical facilities of the company for electrical industry A.-G. In addition to the power plant, a 47 kilometer long pipeline was also built.

Commissioning took place in 1922. Expansions took place in 1931, 1942 and 1949.

In 1942, the second machine set with a further Francis turbine , which was already planned in the original planning, was installed, which increased the output of the power plant from the original 260 to 780 kilowatts.

The so-called Öllschützenspeicher was built in 1949 to make the power plant more adaptable to the actual electricity demand.

In the 1990s, the electrical and mechanical system components were modernized.

Lungau power plant group

Hintermuhr underground power plant 2020

Öllschützenspeicher 2018

The Lungau power plant group of Salzburg AG for energy, transport and telecommunications consists of the power plants located in the municipality of Muhr

• Murfall
• the somewhat older Rotgülden power plant that now uses the Plölitzen reservoir
• the new cavern power station (Hinter-) Muhr , which uses the lower Rotgüldensee and the Altenbergbach, as well as the Öllschützenspeicher located under the Rotgüldensee
• the Zederhaus power plant in the municipality of Zederhaus

The Öllschützenspeicher, which was actually built for the Murfall power plant, has served the Hintermuhr underground power plant as a daily storage facility since it was converted into a pumped storage power plant. For this purpose, the capacity has been increased.

literature

• Journal of the Austrian Association of Engineers and Architects , Vienna, 1921

Footnotes

1. ↑ Archived copy ( Memento of the original from April 1, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. 
2. ↑ http://www.salzburg-ag.at/fileadmin/user_upload/Infomenu/Unternehmen/Wasserkraftwerke/kraftwerkfolder_lungau.pdf  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.  
3. ↑ Annual Report Salzburg AG 2009  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.