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Abstract(s)
A presente Dissertação tem em vista a aplicação do conceito NZEB, na reabilitação energética de um edifício residencial existente, ou seja, melhorar e reduzir as necessidades energéticas, tirando o maior proveito do meio ambiente em que o edifício se insere. Um edifício NZEB (nearly-zero energy building) encontra-se definido na Diretiva 2010/31/U como edifício de balanço energético quase nulo - “é um edifício com um desempenho energético muito elevado”- e que as necessidades energéticas sejam suprimidas através das construções passivas e de fontes renováveis produzidas no local ou nas suas proximidades. Na legislação nacional define quais os valores regulamentares para ser considerado um edifício NZEB em Portugal. Salienta-se que, o edifício em estudo, corresponde a um edifício já existente, que por si só já poderá apresentar vários constrangimentos a nível da tipologia do edifício ou das soluções construtivas adotadas, que poderão dificultar no processo de melhoramento. Inicialmente fez-se uma abordagem ao edifício em estudo, através da análise das soluções construtivas, nos equipamentos utlizados para aquecimento das águas sanitárias e na caraterização e análise do meio ambiente onde se encontra inserido edifício, como também a respetiva verificação dos requisitos mínimos regulamentares. Numa segunda fase, foram propostas soluções para o melhoramento e verificação dos requisitos mínimos regulamentares a nível térmico, com o respetivo dimensionamento dos paneis solares térmicos e fotovoltaicos, para incorporar ao edifício esta energia renovável. Por fim, fez-se uma comparação, com o auxílio da ferramenta de calculo do ITECONS, na qual se quantificou o melhoramento que o edifício teve, através da análise da classificação energética, na eventualidade da aplicação de todas as soluções propostas ou parte delas. Com valores obtidos, conclui-se, com a aplicação de todas as soluções propostas, obteríamos, em relação a classificação energética atual, um melhoramento de dois patamares, de acordo com tabela de classificação energética.
This dissertation aims to apply the NZEB concept in the energy rehabilitation of an existing residential building, that is, to improve and reduce energy needs, taking full advantage of the environment in which, the building is located. An NZEB (nearly-zero energy building) building is defined in Directive 2010/31/U as a building with almost zero energy balance - "it is a building with a very high energy performance" - and that energy needs are met through passive constructions and renewable sources produced on site or in its vicinity. The national legislation defines the regulatory values to be considered an NZEB building in Portugal. It should be noted that the building under study corresponds to an existing building, which in itself may already present various constraints in terms of the building typology or the constructive solutions adopted, which could hinder the improvement process. Initially, an approach was made to the building under study, through the analysis of constructive solutions, the equipment used for heating sanitary water and the characterization and analysis of the environment where the building is located, as well as the respective verification of the minimum regulatory requirements. In a second phase, solutions were proposed for the improvement and verification of the minimum regulatory requirements at the thermal level, with the respective dimensioning of the thermal and photovoltaic solar panels, in order to incorporate this renewable energy into the building. Finally, a comparison was made, with the help of the ITECONS calculation tool, in which the improvement that the building had was quantified, through the analysis of the energy classification, in the event of the application of all or part of the proposed solutions. With values obtained, it is concluded, with the application of all the proposed solutions, we would obtain, in relation to the current energy classification, an improvement of two levels, according to the energy classification table.
This dissertation aims to apply the NZEB concept in the energy rehabilitation of an existing residential building, that is, to improve and reduce energy needs, taking full advantage of the environment in which, the building is located. An NZEB (nearly-zero energy building) building is defined in Directive 2010/31/U as a building with almost zero energy balance - "it is a building with a very high energy performance" - and that energy needs are met through passive constructions and renewable sources produced on site or in its vicinity. The national legislation defines the regulatory values to be considered an NZEB building in Portugal. It should be noted that the building under study corresponds to an existing building, which in itself may already present various constraints in terms of the building typology or the constructive solutions adopted, which could hinder the improvement process. Initially, an approach was made to the building under study, through the analysis of constructive solutions, the equipment used for heating sanitary water and the characterization and analysis of the environment where the building is located, as well as the respective verification of the minimum regulatory requirements. In a second phase, solutions were proposed for the improvement and verification of the minimum regulatory requirements at the thermal level, with the respective dimensioning of the thermal and photovoltaic solar panels, in order to incorporate this renewable energy into the building. Finally, a comparison was made, with the help of the ITECONS calculation tool, in which the improvement that the building had was quantified, through the analysis of the energy classification, in the event of the application of all or part of the proposed solutions. With values obtained, it is concluded, with the application of all the proposed solutions, we would obtain, in relation to the current energy classification, an improvement of two levels, according to the energy classification table.
Description
Keywords
NZEB Renováveis ITECONS REH Energia Otimização energética Meio Ambiente Renewables Energy Energy optimization Environment