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Estratégias para atingir o objetivo de NZEB: Nearly Zero Energy Buildings num edifício de serviços
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Authors
Advisor(s)
Abstract(s)
Uma das maiores inquietações mundiais atuais está diretamente relacionada com a tomada
de consciência de que é insustentável a população mundial continuar a utilizar recursos
energéticos de origem meramente fóssil. Sendo assumido de uma forma generalizada que os
edifícios são os maiores responsáveis por uma enorme parte do consumo da energia mundial,
tornou-se evidente a necessidade de desenvolver meios para que os consumos de energia se
tornem mais reduzidos. Neste contexto surgiu o conceito Nearly Zero Energy Buildings (NZEB)
– Edifício de balanço energético quase zero. Esta ideia tem vindo a ser cada vez mais divulgada,
representando uma das mais recentes tentativas levadas a cabo pela União Europeia (EU) para
que o consumo energético de origem meramente fóssil nos edifícios seja reduzido. Este trabalho
divide-se em três grandes blocos. Numa primeira fase, suporte teórico com recurso a várias
leituras e consultas bibliográficas realizadas, serão abordadas temáticas afetas ao consumo de
energia no Mundo, na Europa e mais concretamente, em Portugal. Neste contexto, serão
abordados os conteúdos ligados aos documentos legislativos mais significativos que regulam a
área da eficiência energética nos edifícios e será efetuada uma clarificação pormenorizada do
conceito NZEB. No seguimento desta análise será abordado um caso real de um edifício
existente. Para a sua análise e posteriores propostas de medidas no sentido de atingir o conceito
NZEB, estabelece-se a construção do modelo de análise, onde é formulado o problema, definidos
os objetivos do estudo e as hipóteses de trabalho; indicando-se o método escolhido, o
procedimento de recolha de dados, os instrumentos utilizados e as características do meio onde
se realiza a investigação. Proceder-se-á à descrição do edifício em estudo, à análise dos dados
obtidos e à exposição de conteúdos afetos a diversas técnicas de melhorias, a diferentes tipos
de soluções inovadoras e a um conjunto de estratégias, que poderão no contexto de uma
reabilitação de um edifício proporcionar uma melhoria do seu desempenho energético.
Nowadays one of the world's greatest concerns is directly related to the understanding that it is impossible for the world population to continue consuming energy resources of pure fossil origin as a first option. It is generally assumed that buildings account for a large part of the world's energy consumption and therefore it is generally accepted that energy consumption must be reduced. It is in this context that the concept Nearly Zero Energy Buildings (NZEB) arises. This idea has become increasingly popular, representing one of the most recent attempts of the European Union (EU) to reduce energy of pure fossil origin consumption in buildings. This work is divided into three major blocks. The first phase will be a theoretical support in which several summaries of bibliographical consultations will be presented, several themes related to the consumption of energy in the World, in Europe and, more specifically, in Portugal will be approached. In this context, content related to the most significant legislative documents regulating the area of energy efficiency in buildings will be addressed and a detailed clarification of the NZEB concept will be addressed. This analysis will be centred in a real case of an existing building. For its analysis and subsequent proposals to try to achieve a NZEB building, it will be developed an analysis model, from which the problem will be formulated, the objectives of the present study and the working hypotheses will be defined; the method, the data collection procedure, the instruments used and the characteristics of the environment where the research is carried out will also be mentioned. A description of the building under study, the analysis of the data obtained and the proposal of various improvement techniques, different types of innovative solutions and a set of strategies will be carried out. In the context of a rehabilitation these solutions may surely improve energy performance.
Nowadays one of the world's greatest concerns is directly related to the understanding that it is impossible for the world population to continue consuming energy resources of pure fossil origin as a first option. It is generally assumed that buildings account for a large part of the world's energy consumption and therefore it is generally accepted that energy consumption must be reduced. It is in this context that the concept Nearly Zero Energy Buildings (NZEB) arises. This idea has become increasingly popular, representing one of the most recent attempts of the European Union (EU) to reduce energy of pure fossil origin consumption in buildings. This work is divided into three major blocks. The first phase will be a theoretical support in which several summaries of bibliographical consultations will be presented, several themes related to the consumption of energy in the World, in Europe and, more specifically, in Portugal will be approached. In this context, content related to the most significant legislative documents regulating the area of energy efficiency in buildings will be addressed and a detailed clarification of the NZEB concept will be addressed. This analysis will be centred in a real case of an existing building. For its analysis and subsequent proposals to try to achieve a NZEB building, it will be developed an analysis model, from which the problem will be formulated, the objectives of the present study and the working hypotheses will be defined; the method, the data collection procedure, the instruments used and the characteristics of the environment where the research is carried out will also be mentioned. A description of the building under study, the analysis of the data obtained and the proposal of various improvement techniques, different types of innovative solutions and a set of strategies will be carried out. In the context of a rehabilitation these solutions may surely improve energy performance.
Description
Dissertação submetida como requisito parcial para
obtenção do grau de Mestre em Engenharia
Eletrotécnica e de Computadores – Ramo das
Energias Renováveis e Sistemas de Potência
Keywords
Eficiência Energética Energias renováveis NZEB - Near zero energy buildings Edifícios de balanço energético quase zero Edifício com necessidades quase nulas Iluminação Eficiente Arrefecimento e Aquecimento Energy Efficiency Renewable Energies Nearly zero building Efficient Lighting Cooling and Heating
Pedagogical Context
Citation
Publisher
Instituto Politécnico de Setúbal. Escola Superior de Tecnologia de Setúbal