This book deals with Engineering Thermodynamics, where concepts of thermodynamics are used to solve engineering problems. Engineers use thermodynamics to calculate the fuel efficiency of engines, and to find ways to make more efficient systems, be they rockets, refineries, or nuclear reactors. One aspect of "engineering" in the title is that a lot of the data used is empirical (e.g. steam tables), since you won't find clean algebraic equations of state for many common working substances. Thermodynamics is the science that deals with transfer of heat and work. Engineering thermodynamics develops the theory and techniques required to use empirical thermodynamic data effectively.
This course forms the foundation for the Heat Transfer course, where the rate and mechanisms of transmission of energy in the form of heat is studied. The concepts can be used in further study including internal combustion engines, refrigeration and air conditioning, and turbomachines to name a few.
Rigorous treatment of the molecular basis will be omitted, in favor of formulations most useful for developing intuition and understanding common technologies. Students of physics will want to pair this text with one on Statistical Mechanics.