The document describes the components and systems of diesel power plants and gas turbine power plants. It discusses the layout and key parts of diesel power plants including the engine, fuel system, cooling system, and lubrication system. It also explains open and closed cycle gas turbine power plants and improvements that can be made including using an intercooler, regenerator, or reheater. Additionally, it outlines different combined power plant cycles that combine gas turbines with steam turbines or other technologies like thermionic, thermoelectric, MHD, nuclear, and integrated gasification.