Carefully designed to teach thermodynamics to engineers, this book focuses on the phenomena of irreversibility and the notion of entropy. It also presents a general theory of exergy, with methods of analyse that allow engineers to master problems of current interest in the field of energy management. The authors illustrate practical aspects of the theory by descibiing specific applications such as combustion chambers, turbines, compressors, heat pumps, fuel cells, refrigeration, and more.