Multiobjective Optimization of the Energy Efficiency and the Steam Flow in a Bagasse Boiler

Ducardo L. Molina, Juan Ricardo Vidal Medina, Alexis Sagastume Gutiérrez (), Juan J. Cabello Eras, Jesús A. Lopez, Simón Hincapie and Enrique C. Quispe
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Ducardo L. Molina: Grupo de Investigación en Energías (GIEN), Faculty of Engineering, Universidad Autónoma de Occidente, Cll 25#115-85, Cali 760030, Colombia
Juan Ricardo Vidal Medina: Grupo de Investigación en Energías (GIEN), Faculty of Engineering, Universidad Autónoma de Occidente, Cll 25#115-85, Cali 760030, Colombia
Alexis Sagastume Gutiérrez: Department of Energy, Universidad de la Costa, Calle 58 No. 55-66, Barranquilla 080002, Colombia
Juan J. Cabello Eras: Department of Mechanical Engineering, Universidad de Cordoba, Cra. 6 No. 77-305, Cordoba 230002, Colombia
Jesús A. Lopez: Grupo de Investigación en Energías (GIEN), Faculty of Engineering, Universidad Autónoma de Occidente, Cll 25#115-85, Cali 760030, Colombia
Simón Hincapie: Grupo de Investigación en Energías (GIEN), Faculty of Engineering, Universidad Autónoma de Occidente, Cll 25#115-85, Cali 760030, Colombia
Enrique C. Quispe: Grupo de Investigación en Energías (GIEN), Faculty of Engineering, Universidad Autónoma de Occidente, Cll 25#115-85, Cali 760030, Colombia

Sustainability, 2023, vol. 15, issue 14, 1-17

Abstract: Renewable energy and energy efficiency are essential for a transition to cleaner and sustainable energy. Photovoltaic and wind turbine systems introduce operation, control, protection, and planning issues, particularly affecting frequency stability in the grid. In contrast to more widespread wind turbines and photovoltaic systems, biomass based electricity systems are more stable with no negative impacts on the grid stability. The efficiency of bagasse boilers is essential to guaranteeing adequate economic profit and environmental performance in sugar plants. To realize universal access to affordable, reliable, and modern energy services by 2030 (SDG 7), the use of renewable energy sources in energy mixing and energy efficiency must increase globally. Sugar plants include cogeneration systems to provide heat and electricity to the process and frequently sell an electricity surplus to the grid, which depends on their energy efficiency. Boilers are an essential component of cogeneration systems in sugar plants, and their efficiency is crucial to guarantee electricity surplus. Therefore, this study assessed a bagasse boiler to optimize its operational efficiency. To this end, the exergy assessment and multiobjective optimization based on a genetic algorithm are used. The results show that the exergy efficiency of the boiler improved by 0.8% with the optimization, reducing bagasse consumption by 23 t/d.

Keywords: water-tube boilers; cogeneration; energy efficiency; exergy efficiency; bagasse (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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