Karl Stephan (process engineer)

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Karl Stephan (born November 11, 1930 in Saarbrücken ) is a German university professor for technical thermodynamics and thermal process engineering.


He studied general mechanical engineering at the TH Karlsruhe until 1956 , received his doctorate there in 1959 and, after his habilitation, received the Venia Legendi for thermodynamics in 1963 .

From 1963 to 1967 he was head of the department of heat and flow technology at Mannesmann AG Duisburg, from 1967 to 1970 full professor and institute director at the Institute for Thermodynamics at the Technical University of Berlin , 1970 to 1975 o. Prof. Institute for Thermo- and Fluid Dynamics at the Ruhr University Bochum and from 1975 to 1996 o. Prof. and director of the Institute for Technical Thermodynamics a. Thermal process engineering from the University of Stuttgart . He has been retired since 1996.

His main research interests are fundamental processes in energy technology, in particular the heat and mass transfer of multi-fuel systems as well as thermophysical properties of these systems, energy saving through heat transformation, heat and mass transfer during condensation and boiling.

Stephan received honorary doctorates from the Technical University of Berlin and the Martin Luther University of Halle-Wittenberg . He was a founding member of the Academy of Sciences in Berlin until its dissolution in 1990. He is a full member of the Berlin-Brandenburgische (formerly Prussian) Academy of Sciences and a member of the German Academy of Science and Engineering (acatech). From 1971 to 1985 he was a member of the Senate, Main Committee and Board of Trustees of the German Research Foundation .

Main publications

  • Rudolf Plank, Fritz Steimle, Karl Stephan: Handbook of refrigeration technology. Springer, Berlin / Heidelberg 1988, ISBN 3-540-15477-9 .
  • Karl Stephan: Heat transfer when condensing and boiling. Springer, Berlin / Heidelberg 1987, ISBN 3-642-83159-1 .
  • Karl Stephan: ISBN 978-3-642-83159-1 , Springer, 1992, ISBN 3-642-52457-5 .
  • Karl Stephan, Franz Mayinger: Thermodynamics. Volume 1: One- component systems. 15th edition. Springer, Berlin / Heidelberg 1998, ISBN 3-662-13213-3 .
  • Karl Stephan, Franz Mayinger: Thermodynamics. Volume 2: Multi-substance systems. 14th edition. Springer, Berlin / Heidelberg 1999, ISBN 3-662-10522-5 .
  • Hans Dieter Baehr, Karl Stephan: Heat and mass transfer. 9th edition. Springer, Berlin / Heidelberg 2016, ISBN 978-3-662-49676-3 .
  • Hans Dieter Baehr, Karl Stephan: Heat and Mass Transfer. 3. Edition. Springer, Berlin / Heidelberg 2011, ISBN 978-3-642-20021-2 .
  • Karl Stephan, Helmut Hildwein: Recommended Data of Selected Compounds and Binary Mixtures, Volume IV, Parts 1 + 2. DECHEMA, Frankfurt 1987, ISBN 3-921567-80-7 .
  • Karl Stephan, Thomas Heckenberger: Thermal Conductivity and Viscosity. Dechema, Frankfurt 1988, ISBN 3-921567-85-8 .
  • Abraham Tamir, Edan Tamir, Karl Stephan: Heats of Phase Change of Pure Components and Mixtures. Elsevier, Amsterdam 1983, ISBN 0-444-42170-X .


  • 1963: Prize from the German Refrigeration Association
  • 1965: Arnold Eucken Prize of the Process Engineering Society (GVC)
  • 1990: Hall Thermotank Gold Medal from the British Institute of Refrigeration
  • 1991: State Research Prize Baden-Württemberg
  • 1993: Arnold Eucken Medal from the Process Engineering Research Association
  • 1996: Emil Kirschbaum Medal of the German Association for Chemical and Process Engineering (DVCV)


  • Laudation for the 60th / 70th / 80th Birthday: Heat and mass transfer 25 (1990), Int. Journal of Refrigeration 24 (2001), Int. J. of Thermal Sciences 39 (2000), Int. Journal Heat and Mass Transfer 44 (2001), Int. J. Thermal Sciences 49 (2010), Journal of Heat and Mass Transfer 46 (2010), Int. J. of Refrigeration (2010).
  • A life for thermodynamics. In: Die Kälte + Klimatechnik. 11, 2010.

Web links

Individual evidence

  1. ^ Karl Stephan ( memento of April 2, 2018 in the Internet Archive ) on the acatech member list, accessed on March 20, 2018.