HDPsyChart Version 8 can easily change the chart style from Psychrometric Chart (USA) to Mollier Chart (Europe)

The Mollier Chart is named after Richard Mollier (30 November 1863, Triest–13 March 1935, Dresden), German professor of Applied Physics and Mechanics in Göttingen and Dresden, a pioneer of experimental research in thermodynamics, particularly for water, steam, and moist air.

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