Hans Lorenz (mechanical engineer)

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Hans Lorenz (born March 24, 1865 in Wilsdruff , Saxony; † July 4, 1940 in Sistrans , Tyrol) was an engineering scientist.

His parents were the Leipzig senior teacher and editor Friedrich August Lorenz (1829–99) and Helene Margarethe, b. Klinkicht (1843–1902), the daughter of the owner of the printing company CE Klinkicht & Sohn Heinrich Klinkicht and Berta Hoffmann. His brother Rudolf Lorenz (1880–1947) took over the management of the newly started locomotive construction at Friedrich Krupp AG in 1918 .

From 1885 to 1889 he studied mechanical engineering at the Dresden Polytechnic under Gustav Zeuner and passed his diploma as an engineer with his award-winning thesis on three-cylinder steam engines.

He then worked at LA Riedinger Augsburg on the manufacture of compressed air systems and in 1893/94 at Escher Wyss in Zurich, where he gained practical experience in thermodynamics. In Munich in 1894 he passed the examination to become a freelance civil engineer with a thesis on the theory of the Lindeschen process of air liquefaction . In 1894/95 he studied physics at the University of Munich and received his doctorate there in 1894 with the dissertation The limit values ​​of thermodynamic energy conversion to a Dr. phil. In 1895 he founded the magazine for the entire refrigeration industry .

From 1896–1900 he was an associate professor for agricultural mechanical engineering at the University of Halle and then associate professor for applied physics and agricultural engineering and director of the institute for technical physics at the University of Göttingen . In 1900 he was elected a member of the Leopoldina .

In autumn 1904 he accepted the call to the newly founded Royal Technical University of Danzig as a full professor for technical mechanics. In 1909 he became director of the material testing institute and from 1915-17 rector of the TH. His students included Gustav Flügel in 1914, Hans Carsten, Eugen Doeinck and Max Fischer in 1920, Franz Ollendorff in 1922 and Wilhelm Eckolt in 1925. After his retirement between 1920 and 1934 he lived in Munich and Sistrans. In November 1933 he signed the professors' declaration of Adolf Hitler at German universities and colleges .

He researched thermodynamics, fluid mechanics, elasticity theory and dynamics as well as astronomy, wrote several textbooks and over 130 scientific papers on crank drives, compressed air and cooling systems. In his studies of steam boilers, he primarily examined their efficiency and compression problems.

Honors

literature

supporting documents

  1. ↑ Entry on Hans Lorenz in the Catalogus Professorum Halensis (accessed on July 28, 2015)
  2. ↑ Otto Mayr:  Lorenz, Hans. In: New German Biography (NDB). Volume 15, Duncker & Humblot, Berlin 1987, ISBN 3-428-00196-6 , p. 177 ( digitized version ).
  3. ↑ http://genealogy.math.ndsu.nodak.edu/id.php?id=47633
  4. ↑ Confession, p. 132
  5. ↑ http://digbib.ubka.uni-karlsruhe.de/volltexte/digital/3/1082.pdf
personal data
SURNAME Lorenz, Hans
BRIEF DESCRIPTION German engineering scientist
DATE OF BIRTH March 24, 1865
PLACE OF BIRTH Wilsdruff
DATE OF DEATH 4th July 1940
Place of death Sistrans