A comprehensive text on Thermal Engineering in S.I. units, this book covers all important and new topics keeping in view the developments taking place in the field. The book provides an extensive treatment of classical thermodynamics while retaining an engineering perspective to use the thermodynamics in the practice of engineering. All important topics related to engines, generators, compressors and condensers have been covered and difficult concepts have been explained by using hundred of figures, diagrams and charts. Many solved and unsolved problems have been provided so that students can get a thorough understanding of the various topics.