**About the Special Issue Editor**

**Michel Feidt**, emeritus professor at the University of Lorraine France, where he has spent his entire career in education and research. His main interests are thermodynamics and energy. He is a specialist of infinite physical dimensions optimal thermodynamics (FDOT) from a fundamental point of view, illustrating the necessity to consider irreversibility to optimize systems and processes and characterize upper bound efficiencies. He has published many articles in journals and books: more than 120 papers and more than 5 books. He participates actively in numerous international and national conferences on the same subject. He has developed 55 final contracts reports and was the director of 43 theses. He has been member of more than 110 doctoral committees. He is a member of the scientific committee of more than 5 scientific journals and editor-in-chief of one journal.
