Richard Mollier was born in Triest (Germany) on November 30th, 1863. Until 1882 he studied at “das Deutsche Gymnasium”. He studied mathematics, physics and mechanical engineering in Graz and München. His in 1892 proposed doctoral thesis on the heat-diagram caused his scientific calling for field of thermodynamics. In 1896 he was appointed professor in applied
mathematics and mechanical engineering at the University of Göttingen. In 1897 he accepted an offer to come work in Dresden. In 1904 he published his famous diagram for the first time in the magazine of VDI, the German association for engineers. With this diagram he gave engineers a tool of which the impact would soon become clear. Mollier continuously tried to enhance his diagrams for water vapour en adapt to the state of the art in science. This work has been used in handbooks and specialist books ever since.
Mollier was also active in the field of gasification and combustion processes which also involved steam engines, combustion engines and chillers. With lectures in thermodynamics, hydraulics, refrigeration, kinematics and gas engines he establishes his reputation as a professor. Many problems were studied by the students of Mollier and he ascribed the acquired copyrights to their names. In 1928 he received the highest decoration of the VDI, the ‘Grasshof commemorative medal’. The biggest honour he received was the decision on the thermodynamics congress of 1923 in Los Angeles to name all diagrams that display heat energy with one coordinate after Richard Mollier.
Richard Mollier retired in 1931. A few years later, on March 13th 1935, he died with an age of 72 in Dresden.