Phase diagram for Roegenian economics

Firstly, this paper recall that the Roegenian Economics is created from a Thermodynamics-Economics dialog, transferring information via a specific dictionary. We have structured the explanations in an adapted dictionary, thermodynamics differential laws, economics differential laws, and integral manifolds of Gibbs-Pfaff economic equation. Secondly, we introduce and discuss the phase diagram for a Roegenian economic system highlighting a triple point and a critical point, with related explanations. These ideas can be used to improve knowledge and understanding of the nature of development and evolution of Roegenian economic systems.