This handbook is addressed mainly to students of Positive and Technological Sciences, in which thermodynamics is a structural discipline of theoretical and applied knowledge. The handbook consists of two parts. The first contains answers to queries and thoughts on the subject while the second part provides solutions to problems. The selection of the specific material presented is based on the criteria which focuses on learning goal of consolidating the respective discipline.

Special emphasis is given to the documentation of the answers to the theoretical issues, as well as to the detailed presentation of the way of thinking that leads to the solution of each problem. From the thorough study of this manual, the reader learns to become familiar with the treatment of themodynamic problems, while at the same time understanding in depth the acquired knowledge.