Doutorado em Engenharia Mecânica

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Navegando Doutorado em Engenharia Mecânica por Assunto "arbitrariedades"

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    Diagrama abrangente e desagregação da exergia : Uma proposta de sistematização generalizada da modelagem termoeconômica
    (Universidade Federal do Espírito Santo, 2021-12-22) Barone, Marcelo Aiolfi; Santos, José Joaquim Conceição Soares; https://orcid.org/0000-0003-3695-2014; http://lattes.cnpq.br/6666040476009642; https://orcid.org/0000-0001-9290-0062; http://lattes.cnpq.br/7099654064340324; Arrieta, Felipe Raul Ponce; https://orcid.org/0000-0001-7107-4929; http://lattes.cnpq.br/8666505917329368; Ramos, Rogério; https://orcid.org/0000000344932435; http://lattes.cnpq.br/2975022316691139; Errera, Marcelo Risso; https://orcid.org/0000-0002-9394-2712; http://lattes.cnpq.br/1262935578021391; Flórez-Orrego, Daniel Alexander; https://orcid.org/0000-0003-0103-7326; http://lattes.cnpq.br/1046064227631606
    Some factors can interfere in the cost formation process, making it more arbitrary and less systematized. The objective of this thesis is to propose a generalized systematization of thermoeconomic modeling. The comprehensive diagram was created to eliminate the arbitrariness of the subsystems interconnections and limitations present in the conventional diagram, given that it represents the physical and productive flows in the same diagram, in addition to allowing the cost calculation of both flows. In turn, physical exergy disaggregation was used to isolate dissipative equipment and waste treatment. From the comprehensive unit, the localized exergy disaggregation technique was presented, which performs the physical exergy disaggregation only in the desired device. The results showed that the comprehensive diagram systematized the cost formation process, eliminating the interconnections arbitrariness in addition to allowing the treatment of the dissipative equipment. Only with the disaggregation of physical exergy it was possible to isolate the dissipative equipment and treat the residue systematically. The localized disaggregation obtained coherent unit exergetic cost values in addition to the reduction of complexity. Therefore, the comprehensive diagram is a solution to the interconnections arbitrariness and together with the physical exergy disaggregation it systematized and generalized the cost formation process. The best solution was the comprehensive diagram with the physical exergy disaggregation in Models H&S, UFS and UFS+, which showed a systematic cost formation process, regardless of the existence of dissipative equipment or waste.