The present book is the result of more than half a century of teaching and research in thermodynamics at the Swiss Federal Institute of Technology (Ecole Polytechnique Fédérale of Lausanne), known as the EPFL, in Switzerland. Its objective is to facilitate the teaching of thermodynamics to engineering students and to allow engineers from industry to update their knowledge in this domain. It deals primarily with the study of problems of energy conversion of chemical, mechanical and thermal energies in an approach known as phenomenological thermodynamics....