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Advisor(s)
Abstract(s)
O presente relatório dá expressão ao trabalho realizado em contexto de estágio curricular no IEP, e enquadra-se no âmbito da unidade curricular de Dissertação/Estágio do Mestrado em Engenharia Eletrotécnica – Sistemas Elétricos de Energia, do ISEP. As medidas para a indústria que o Plano Nacional Energia e Clima (PNEC 2030) considera indispensáveis para assegurar a concretização dos objetivos e metas para o país, em matéria de energia e clima, focam-se sobretudo na redução do consumo de energia primária, e na promoção da inovação, tendo em vista a eficiência e a descarbonização. É nesta contextura que a monitorização dos consumos energéticos de instalações consumidoras intensivas de energia, e a avaliação dos impactos das medidas implementadas no quadro das obrigações regulamentares do Sistema de Gestão dos Consumos Intensivos de Energia (SGCIE), ganham sentido instrumental, permitindo não só aferir o grau de concretização dos objetivos, como também fornecer informação suscetível de ser mobilizada para processos de melhoria. Sendo este o ambiente normativo e institucional do objeto da investigação, procedeu-se à avaliação da eficácia das medidas implementadas em oito indústrias distintas, todas sujeitas à realização de uma auditoria energética (AE) e de um Plano de Racionalização dos Consumos de energia (PREn). Numa segunda fase, elaborou-se um projeto fotovoltaico (FV) para autoconsumo, para uma das oito empresas estudadas, com o objetivo de fazer uma análise comparativa, usando como referência o proposto no PREn da empresa pelo IEP. Numa terceira e última fase, e devido ao cariz intermitente da energia fotovoltaica, foram estudados sistemas de armazenamento de energia com recurso a baterias mecânicas, a implementar como complemento ao sistema FV. Esta hipótese de trabalho, contudo, não foi validada pela evidência empírica, não se apresentando, por enquanto, como uma solução competitiva, por razões de rentabilidade.
This report gives expression to the work carried out in the context of a curricular internship at IEP, and falls within the scope of the curricular unit of the Master's Dissertation/Internship in Electrotechnical Engineering – Electrical Energy Systems, at ISEP. The measures for industry that the National Energy and Climate Plan (PNEC 2030) considers essential to ensure the achievement of the country's goals and targets, in terms of energy and climate, are mainly focused on reducing primary energy consumption, and in promoting innovation, with a view to efficiency and decarbonization. It is in this context that the monitoring of energy consumption of intensive energy consuming installations, and the assessment of the impacts of the measures implemented within the framework of the regulatory obligations of the Intensive Energy Consumption Management System (SGCIE), gain an instrumental meaning, allowing not only to measure the degree of achievement of objectives, as well as providing information that can be mobilized for improvement processes. This being the normative and institutional environment of the object of the investigation, the effectiveness of the measures implemented in eight different industries was evaluated, all subject to an energy audit (AE) and an Energy Consumption Rationalization Plan (PREn). In a second phase, a photovoltaic (PV) project for self-consumption was elaborated for one of the eight companies studied, with the objective of making a comparative analysis, using as reference the proposal in the company's PREn by the IEP. In a third and final phase, and due to the intermittent nature of photovoltaic energy, energy storage systems were studied using mechanical batteries, to be implemented as a complement to the PV system. This working hypothesis, however, was not validated by empirical evidence, not presenting itself, for the time being, as a competitive solution, for reasons of profitability.
This report gives expression to the work carried out in the context of a curricular internship at IEP, and falls within the scope of the curricular unit of the Master's Dissertation/Internship in Electrotechnical Engineering – Electrical Energy Systems, at ISEP. The measures for industry that the National Energy and Climate Plan (PNEC 2030) considers essential to ensure the achievement of the country's goals and targets, in terms of energy and climate, are mainly focused on reducing primary energy consumption, and in promoting innovation, with a view to efficiency and decarbonization. It is in this context that the monitoring of energy consumption of intensive energy consuming installations, and the assessment of the impacts of the measures implemented within the framework of the regulatory obligations of the Intensive Energy Consumption Management System (SGCIE), gain an instrumental meaning, allowing not only to measure the degree of achievement of objectives, as well as providing information that can be mobilized for improvement processes. This being the normative and institutional environment of the object of the investigation, the effectiveness of the measures implemented in eight different industries was evaluated, all subject to an energy audit (AE) and an Energy Consumption Rationalization Plan (PREn). In a second phase, a photovoltaic (PV) project for self-consumption was elaborated for one of the eight companies studied, with the objective of making a comparative analysis, using as reference the proposal in the company's PREn by the IEP. In a third and final phase, and due to the intermittent nature of photovoltaic energy, energy storage systems were studied using mechanical batteries, to be implemented as a complement to the PV system. This working hypothesis, however, was not validated by empirical evidence, not presenting itself, for the time being, as a competitive solution, for reasons of profitability.
Description
Keywords
Eficiência energética Consumidores intensivos de energia Auditoria energética Sistema fotovoltaico para autoconsumo Flywheels Energy efficiency Energy intensive consumers Energy auditing Photovoltaic system for self-consumption