Otimização operacional de um sistema de trigeração para atender demandas varíaveis

Abstract

This paper aims to present and discuss the procedures and results of the optimization of the operational strategies of a trigeneration system of a research center to meet horosazonal demand for electricity, steam and chilled water by minimizingthe operating cost of the plant. Nowadays more and morethethermal systems are more complex. Thus, it seeks to better use in order to have better production and minimizing production costs. The research center analyzedconsists of a cogeneration system that produces electricity and also heat (steam and hot water) to drive two absorption chillers (one fulled by steam and one by hot water). This center also has other generators and additional chillers. Besides the equipment also has the option of usean additional electrical demand with the dealership. The main goal of optimization is to determine how to operate the trigeneration system of the center and when or how to use the contracted electrical demand. To achieve this result, all data of the equipment and plant costs, and also the data demand of the center, were raised and the mathematical model was developed. In thispoint ofview there are many optimization methods that can be employed. In this paper the mathematical optimization is used through the generalized reduced gradient method with the help of the Solver in Excel Microssoft. The results show that the optimization method is very effective giving favorable results