This book on Engineering Thermodynamics has been written for students preparing for B.E./B.Tech. and competitive examinations. It consists of sixteen chapters in all, covering the various topics systematically and exhaustively. The presentation of the subject matter is very systematic and the language of text is in a lucid, direct and easy to understand. Each chapter of the book is saturated with much needed text supported by neat and self-explanatory diagrams to make the subject matter self-speaking to a great extent. A large number of solved examples, properly graded, have been added in various chapters to enable the students to attempt different types of questions in the examination without any difficulty. At the end of each chapter Highlights, Objective Type Questions, Theoretical Questions and Unsolved Examples have been added to make the book a complete unit in all respects.