Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
Exergetic analysis of a supercritical cogeneration system proposed for a sugarcane mill producing sugar and ethanol
Submission Author:
André Vilela , SP , Brazil
Co-Authors:
Carolina Lopez Castrillon, André Vilela, Silvia Azucena Nebra de Perez, Rafael Pinho Furtado, Antonio Gallego, Reynaldo Palacios
Presenter: Reynaldo Palacios
doi://10.26678/ABCM.ENCIT2022.CIT22-0323
Abstract
The world's concerns about the decrease in the availability of some fossil energy sources, the pollution generated by most of them and the concept of sustainable development, make the use of cogeneration systems based on the use of biomass an important topic of research. In this scenario, supercritical steam cycles are a good alternative for cogeneration thermal power plants, as they can achieve higher efficiency values compared to subcritical steam cycles. In Brazil, the cogeneration of biomass from agricultural waste, especially from sugarcane, replaces the use of fossil fuels with a renewable source of energy, providing environmental benefits. Currently, the cogeneration systems of Brazilian sugar and ethanol process operate with sugarcane bagasse available, in subcritical thermal cycle. Given that the supercritical steam generation technology is well defined and widespread in the world, it is interesting to analyse the possibility of cogeneration of sugarcane wastes under these operating conditions and to assess its feasibility in the country. Thus, this work aims to carry out a thermodynamic analysis of a supercritical cogeneration plant operating with sugarcane bagasse as a fuel. The modelling of the electricity generation process is done through mass and energy balances, using a Rankine thermal plant with closed regenerators and reheating system.
Keywords
Exergy Analysis, cogeneration, Biomass, sugarcane, bagasse, Supercritical cycle
