Thermodynamics is a branch of physics that is concerned with studying the relationship between heat and energy. Thermodynamics as a part of engineering correlates macroscopic properties like temperature, pressure, etc. to energy and its efficiency. It has various branches such as extended thermodynamics, classical thermodynamics, local equilibrium thermodynamics, etc. The different applications of this field are used in jet engines, steam turbines, turbo chargers, refrigerators, etc. This book discusses in detail the various concepts and applications of this discipline. It includes topics of utmost significance which will help readers gain in-depth knowledge about thermodynamics. It will help researchers by foregrounding their knowledge in this field.