... Department of Mechanical Engineering at UFRJ. He is a member of the Brazilian Society of Mechanical Sciences an dEngineering (ABCM) and of the American Institute of Aeronautics and Astronautics ... minimized is the sum of the specific costs of the system products, which include the costs of capital investment, fuel, and operation and maintenance. The total system product is the sum of ... the value of the objective function, and they lead to the same global behavior of the plant CP-24. In fact, the gas turbines sizes and loads are reduced, while the operating pressures and temperatures...