Estudo da viabilidade técnico-econômica preliminar de um sistema térmico híbrido PTC-RSU para a geração de energia elétrica no Estado do Espírito Santo

• Ano de defesa: 2024
• Autor(a) principal: Sant’Ana, Brunella Bermudes Prati
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Espírito Santo; BR; Mestrado em Engenharia Elétrica; Centro Tecnológico; UFES; Programa de Pós-Graduação em Engenharia Elétrica
• Palavras-chave em Português: Usinas Híbridas; Energia solar concentrada; Resíduos sólidos urbanos; Fontes renováveis; Energia limpa; Engenharia Elétrica
• Link de acesso: http://repositorio.ufes.br/handle/10/18072

The growing concern about rising global temperatures has sparked debate in various sectors of society. In the context of electricity generation, the transition to more sustaina ble energy sources is becoming an urgent necessity, given the importance of electricity in all spheres of modern life. This study aims to analyze the technical and economic feasibi lity of implementing a thermosolar-biomass plant in the state of Espírito Santo, with the aim of providing a clean and sustainable source of energy for both the state and the regio nal distribution network. The proposed system consists of a combination of technologies, including a solar generation plant with parabolic trough collectors (PTC) together with the combustion of locally generated Municipal Solid Waste (MSW) in order to mitigate the intermittency of the solar source. The methodological approach of the research pre sented involves localization studies using road routes for transporting the MSW, research into solar irradiation in the location of the plant, simulations using IPSEPro software to thermodynamically analyze the plant and determine electricity generation, as well as preliminary economic feasibility studies, considering basic investment costs and return. The results of the research indicate that it is possible to achieve a generation capacity of between 28MW and 78MW of gross electrical power, depending on the configuration of the hybrid plant. For maximum electricity generation, the plant’s solar field is made up of 88 collectors, each 1.50 meters long, installed over an area of approximately 7.2 hectares. To guarantee continuous energy generation, it was estimated that a logistical quantity of 27.04kg/s of MSW could be delivered to the site identified in the studies as ideal for installing the plant, located in Cariacica, where the waste is incinerated and the heat from combustion is used to heat the solar field fluid at night. Economically, the project has a maximum initial investment of around R$522,000,000.00, with a return of up to 7 years (considering attenuation scenario of 60% of revenue), which demonstrates the viability of the project. However, an initial investment of this size is only feasible with the support of public policies to encourage the use of renewable sources and low interest rates for financing. The investment and development of this hybrid power plant initiative represents a significant step forward in the state’s renewable energy sector, contributing to the reduction of greenhouse gas emissions and the diversification of the regional electricity matrix