Fritz Marguerre

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Karl Friedrich "Fritz" Marguerre (born February 17, 1878 in Gent , Belgium , † October 13, 1964 in Baden-Baden ) was a Belgian-German engineer , inventor and entrepreneur .

Life

Marguerre studied electrical engineering in Aachen and Karlsruhe . In Aachen he became a member of the Corps Marko-Guestphalia .

His first job was as a graduate engineer from 1901 at Brown, Boveri & Cie (BBC). At the same time, he worked on his doctorate , which he completed in 1903.

After a stint in Norway , he returned to Germany and was most recently director of Kraftanlagen AG, founded by BBC in Mannheim . In 1923 he took over the management of the then newly built large power station in Mannheim .

During this time, Fritz Marguerre made important inventions for power plant technology . The two main ones are the high-pressure feed with reheating and the Voith-Marguerre coupling . The high-pressure feed of turbines made it possible, after the steam had reduced pressure and temperature in a first stage (high-pressure turbine), to be reheated outside the turbine (reheating) and fed to a new turbine stage (low-pressure turbine). This increases the efficiency of power plants considerably (yield from coal to electricity). With the Voith-Marguerre coupling and a gearbox, it became possible to couple a 1000 / min traction current generator to a turbine generator group that rotates at 3000 rpm (for the 50 Hz network) and load-controlled 16⅔ Hz power for the Generate railway network. The clutch works hydraulically and can transfer any part of the power provided by the turbine to the shaft into the transmission. (Part of one of these couplings was installed as a showpiece at the Voith headquarters after the two traction current generators were shut down). Another step towards increasing the efficiency of "his power plant" was the use of combined heat and power. As early as the 1930s, the supply of surrounding companies with so-called long-distance steam began.

Honors

In 1952, Professor Fritz Marguerre , who has now qualified as a professor , received the Federal Cross of Merit (Steckkreuz) and a year later the Great Cross of Merit. In 1954 he was made an honorary citizen of the city of Mannheim .

literature

  • Marguerre, Fritz. In: Robert Volz: Reich manual of the German society . The handbook of personalities in words and pictures. Volume 2: L-Z. Deutscher Wirtschaftsverlag, Berlin 1931, DNB 453960294 , p. 1194.
  • Petra Matussek: “By no means an unimaginative work”. Fritz Marguerre . In: Ulrich Nieß, Michael Caroli (ed.): The city's highest award. 42 Mannheim honorary citizens in portraits (Kleine Schriften des Stadtarchiv Mannheim 18), Verlagsbüro v. Brandt, Mannheim 2002, pp. 117-120
  • Hans-Erhard Lessing: Mannheim pioneers . Wellhöfer-Verlag, Mannheim 2007

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