Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
THE IMPORTANCE OF THE ENVIRONMENT IN THE THERMOECONOMIC MODELING: A CONVENTIONAL BOILER WASTE AND ENVIRONMENTAL COSTS ALLOCATION
Submission Author:
Igor Belisario , ES , Brazil
Co-Authors:
Igor Belisario, Carlos Eduardo Silva Abreu, Rodrigo Guedes dos Santos, Pedro Rosseto de Faria, Marcelo Aiolfi Barone, José Joaquim Conceição Soares Santos
Presenter: Igor Belisario
doi://10.26678/ABCM.COBEM2021.COB2021-1737
Abstract
Cost allocation is an important field in thermoeconomics since it allows to define an equal basis comparison of different thermoeconomic methodologies. Traditionally, monetary and exergetic costs are allocated for cost assessment of the final products. Nevertheless, environmental charges and waste cost allocation has been gained importance and it has also been taken into account in the analyzes. In addition, energy systems can be defined as a set of components that interact with each other and with the environment through a set of flows of matter, work or heat. The way in which the productive structure is defined is a key point in thermoeconomics. Therefore, this work aims to contribute to this field by discussing and testing the consistency of the environment as a subsystem, especially regarding the treatment of waste and environmental charges. A thermoeconomic analysis is carried out in a sugarcane boiler by disaggregating the system into subsystems. Three thermoeconomic models (E, E&S and H&S), using productive diagrams, are studied and compared. Although the E&S Model uses the stack as a fictitious subsystem in the productive structure, the results highlight the advantage of using the H&S Model, as a consistent exergy disaggregation methodology, that intrinsically includes the environment as a real subsystem in its productive structure and allows a rational environmental cost allocation.
Keywords
Waste treatment, Environmental cost, Conventional boiler, Cost Allocation, thermoeconomics
