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Abstract(s)
A presente dissertação pretende demonstrar a aplicação do conceito de Zero Building Emissions
num edifício de serviços e comércio existente.
O objetivo é conseguir reabilitar o edifício existente, tornando-o mais eficiente. Este género de
edifício tem um balanço energético nulo e as suas necessidades energéticas são suprimidas através
de sistemas passivos e ativos e fontes renováveis de produção de energia. Este conceito vai de
encontro com as normas e objetivos europeus, que se focam na sustentabilidade energética e na
descarbonização do planeta.
Ao longo da dissertação aborda-se todos os conceitos relacionados com eficiência energética e faz se referência ao enquadramento europeu e nacional em relação a legislação em que se enquadra
este projeto.
Uma primeira fase baseia-se na análise das soluções construtivas, dos sistemas técnicos existentes
para aquecimento de águas sanitárias e climatização, na caraterização do clima onde o edifício do
caso de estudo se insere. Esta análise serve para fundamentar os cálculos de consumos energéticos
e a elaboração da simulação dinâmica, para cálculo da classificação atual de eficiência energética.
Uma segunda fase serve para estudar medidas de melhoria propostas e aferir o seu impacto no
consumo final do edifício e na sua classificação energética, sendo que se analisa cada medida de
eficiência individualmente e conclui-se com o impacto global. No estudo de medidas de melhoria,
optou-se por realizar melhorias na envolvente, como isolamento térmico e melhoria dos
envidraçados, outras estratégias bioclimáticas; adotar sistemas técnicos mais eficientes, como
luminárias fluorescentes, sistema de gestão de energia e caldeiras de condensação. Finalmente, a
adoção de sistemas de produção de energia renovável, como painéis solares fotovoltaicos, sistemas
solares térmicos e energia eólica, permitiu alcançar o objetivo inicial de tornar o edifício em NZEB.
Individualmente, a medida com maior impacto foi a instalação de um sistema solar térmico,
apresentando 17,5% de redução de consumo energético não renovável. Com a implementação na
globalidade das medidas identificadas foi possível obter 31% de redução do consumo energético
não renovável primário.
This dissertation aims to demonstrate the application of the Zero Building Emissions concept in an existing commercial and service building. The goal is to rehabilitate the existing building, making it more efficient. This type of building has a net-zero energy balance, and its energy needs are met through passive and active systems and renewable sources of energy production. This concept aligns with European and national standards and objectives, which focus on energy sustainability and decarbonization of the planet. Throughout the dissertation, all concepts related to energy efficiency are addressed, and reference is made to the European and national framework regarding legislation that encompasses this project. The first phase is based on the analysis of constructive solutions, existing technical systems for water heating and air conditioning, and the characterization of the climate where the case study building is located. This analysis serves to substantiate the calculations of energy consumption and the development of dynamic simulation to calculate the current energy efficiency rating. A second phase serves to study proposed improvement measures and assess their impact on the final energy consumption of the building and its energy rating, analyzing each individual efficiency measure and concluding with the overall impact. In the study of improvement measures, the focus was on improving the building envelope, such as thermal insulation and upgrading glazing, as well as adopting other bioclimatic strategies. Additionally, more efficient technical systems were implemented, such as fluorescent lighting fixtures, energy management systems, and condensing boilers. Finally, the adoption of renewable energy production systems, such as photovoltaic solar panels, solar thermal systems, and wind energy, allowed the initial goal of making the building a Nearly Zero Energy Building (NZEB) to be achieved. Individually, the measure with the greatest impact was the installation of a solar thermal system, presenting a 17.5% reduction in non-renewable energy consumption. With the overall implementation of the identified measures, it was possible to obtain 31% reduction in primary non renewable energy consumption.
This dissertation aims to demonstrate the application of the Zero Building Emissions concept in an existing commercial and service building. The goal is to rehabilitate the existing building, making it more efficient. This type of building has a net-zero energy balance, and its energy needs are met through passive and active systems and renewable sources of energy production. This concept aligns with European and national standards and objectives, which focus on energy sustainability and decarbonization of the planet. Throughout the dissertation, all concepts related to energy efficiency are addressed, and reference is made to the European and national framework regarding legislation that encompasses this project. The first phase is based on the analysis of constructive solutions, existing technical systems for water heating and air conditioning, and the characterization of the climate where the case study building is located. This analysis serves to substantiate the calculations of energy consumption and the development of dynamic simulation to calculate the current energy efficiency rating. A second phase serves to study proposed improvement measures and assess their impact on the final energy consumption of the building and its energy rating, analyzing each individual efficiency measure and concluding with the overall impact. In the study of improvement measures, the focus was on improving the building envelope, such as thermal insulation and upgrading glazing, as well as adopting other bioclimatic strategies. Additionally, more efficient technical systems were implemented, such as fluorescent lighting fixtures, energy management systems, and condensing boilers. Finally, the adoption of renewable energy production systems, such as photovoltaic solar panels, solar thermal systems, and wind energy, allowed the initial goal of making the building a Nearly Zero Energy Building (NZEB) to be achieved. Individually, the measure with the greatest impact was the installation of a solar thermal system, presenting a 17.5% reduction in non-renewable energy consumption. With the overall implementation of the identified measures, it was possible to obtain 31% reduction in primary non renewable energy consumption.
Description
Keywords
NZEB Sustainability Decarbonization EPBD HAP