
handle: 10773/11562
The high energy consumption of the residential and non-residential buildings sector and the consequent emissions of Green House Gases brought the European Union to create a plan with the objective of reducing by 20% the energy consumption of new buildings until 2020. To this end, the Directive 2010/31/EU was published, it contains in its genesis, the concept of efficient building. This is achieved by the application of the principles of Passive House, which, combined with the energy and economic sustainability, leads to an effectively achievement of the Nearly Zero Energy Buildings. The objective of this thesis is to present the feasibility of applying the Passive House concept in Portugal. For this, the energy performance of a building constructed according to the energetic standard in Portugal and another with the Passive House standard were evaluated, as well as the construction costs of both solutions. Having the respective energy needs, we performed an economic study in terms of overall energy saved and of energy saved by constructive element. It was concluded that it is possible to perform an investment to build Passive House according to the requirements in Portugal, yielding acceptable return periods taking into account the lifetime of a building.
O elevado consumo energético do sector dos edifícios residenciais e não residenciais e a consequente emissão de Gases Efeito Estufa levou a União Europeia a criar um plano com o objetivo de reduzir em 20%, até 2020, o consumo de energia dos edifícios novos. Com este objetivo foi publicada a Diretiva 2010/31/EU que contém na sua génese o conceito de edifício eficiente, cujo alcance se consegue através da aplicação dos princípios da Passive House, que alia a sustentabilidade energética e económica levando a que se atinja efetivamente os Nearly Zero Energy Buildings. O objetivo desta dissertação é apresentar a viabilidade económica da aplicação do conceito Passive House em Portugal. Para isso, avaliou-se o desempenho energético dum edifício construído segundo o standard energético em vigor no país e segundo os requisitos Passive House, bem como os custos de construção das duas soluções. Com as respetivas necessidades energéticas efetuaram-se estudos económicos quer em termos globais quer em termos da energia poupada por elemento construtivo. Foi possível concluir que é viável efetuar um investimento adicional para se construir segundo os requisitos Passive House em Portugal, obtendo-se períodos de retorno aceitáveis tendo em conta a vida útil dos edifícios.
Mestrado em Engenharia Civil
Casas de habitação - Climatização - Portugal, Engenharia civil, Consumo de energia, Eficiência energética
Casas de habitação - Climatização - Portugal, Engenharia civil, Consumo de energia, Eficiência energética
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