Avaliação termodinâmica da produção de eletricidade e etanol a partir da cana-de-açúcar

Abstract

The main objective of this work is the exergoeconomic evaluation of an electric energy generation and steam production process in the sugar and alcohol segment. The study results are presented of the thermal efficiency increase potential and the economic viability of the current project of the plant cogeneration “Usina Colombo”. It is also evaluated the options for the project modification aiming at an increase in the excess electricity generation. It had been determined the costs the main flow system for the crop corresponding to 2003 year, considering the installation costs as a new cogeneration plant, for these calculation was considered a 15% yearly tax rate and ten years amortization. It was done a detailed study about the thermodynamic limits of the ethanol and electricity production by sugar cane, at this case the plant in study has a capacity different of the mentioned before.