This course is an understanding of the Second Law of Thermodynamics regarding the concept of entropy and the application of thermodynamic cycles to the industrial world. The discussion begins with an introduction to the concepts of entropy, changes in entropy, and equilibrium entropy for control mass and control volume. Next is an introduction to the concept of exergy, exergy balance in control mass and control volume systems, and exergetic efficiency. Introduction of the Rankine cycle as a power producing cycle equipped with supporting equipment to optimize performance such as superheat, reheat and supercritical. Introduction of gas power systems such as Otto, Diesel, Dual and Brayton cycles which are equipped with reheat and intercooling.