Engineering thermodynamics plays an important role in reducing the negative impacts on human health as well as the environment that come along with the generation and use of energy, such as air and water pollution or global climate change. New applications are also being developed in the fields of biomedical systems, bioengineering as well as nanotechnology. Specialists in any of these subjects may benefit from the information in this book. In this book, non-specialists may learn about thermodynamics in order to make educated judgments regarding technology in the workplace and as informed citizens. This book is organized by chapters and sections within chapters. Fundamental concepts and associated equations within each section lay the foundation for applications of engineering thermodynamics provided in accompanying discussions. The diagrams included in the chapters allows you a more clear understanding of the technology. The first chapter is introductory to the basic concepts of thermodynamics such as thermodynamic properities, state, process, heat, work, energy, temperature, the zeroth law, ideal gas law etc. which lays a strong foundation for further understanding. Then the following chapters detail the other two laws of the thermodynamics along with their corollaries, statements and applications. In order to familiarize the readers with real life applications of thermodynamics further chapters Steam generators, Boilers, boilers mountings and accessories have been included along with their thermodynamic functioning and heat calculations. This book is expected to provide the basic tools to the readers who are interested in pursuing a career in thermal engineering.