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Os edifícios representam uma parcela significativa do consumo de energia nos países
desenvolvidos, representando cerca de 40% do consumo final de energia na Europa. Este
elevado consumo tem implicações importantes para as sociedades, nomeadamente no que
concerne às emissões de gases de efeito estufa, ao aquecimento global e às alterações
climáticas. Em países como Portugal, o uso de energia nos edifícios também contribui para
o aumento da dependência energética. Ademais, para os proprietários e gestores de
edifícios, o consumo de energia implica custos que podem ser elevados.
A pressão para melhorar a eficiência energética dos edifícios tem crescido ao longo
dos anos, incentivando a adoção de soluções sustentáveis, como isolamento térmico
eficiente, sistemas de aquecimento mais sustentáveis e o uso de fontes de energia
renovável. Neste contexto, a União Europeia tem implementado diversas iniciativas para
aprimorar o desempenho energético e as condições de conforto dos edifícios, através de
diretivas que estabelecem normas obrigatórias para os Estados-Membros. Em Portugal, em
resposta às exigências europeias, foi criado o Sistema de Certificação Energética dos
Edifícios (SCEE). Como consequência, a certificação energética tornou-se obrigatória em
diferentes situações, incluindo edifícios novos e reabilitados.
Este trabalho de dissertação apresenta um processo de certificação energética de um
edifício de serviços localizado em Portugal, especificamente um hotel. Para o efeito, foram
utilizadas ferramentas de simulação apropriadas e efetuada uma análise detalhada do
ambiente envolvente e dos sistemas técnicos do edifício. O estudo identifica e quantifica os
principais pontos de desperdício de energia, propondo medidas de melhoria energética e
avaliando o seu impacto no desempenho global do edifício. Além disso, o trabalho inclui uma
avaliação económica das intervenções sugeridas.
O estudo demonstrou que o edifício requer intervenções para alcançar níveis
adequados de eficiência energética. As recomendações fundamentais incluem a instalação
de painéis fotovoltaicos, o reforço do isolamento térmico nas zonas mais vulneráveis e a
substituição das caldeiras atuais por sistemas mais eficientes. Conforme demonstrado, a
implementação das medidas em questão tem o potencial de transformar custos operacionais
constantes em investimentos com retorno, evidenciando que a transição energética no setor
hoteleiro representa uma necessidade ambiental e uma decisão financeiramente vantajosa.
Buildings account for a significant portion of energy consumption in developed countries, constituting approximately 40% of final energy use in Europe. This high level of consumption has important societal implications, notably concerning greenhouse gas emissions, global warming, and climate change. In countries such as Portugal, energy use within buildings also contributes to increased energy dependency. Furthermore, for building owners and managers, energy consumption entails substantial costs. The pressure to enhance the energy efficiency of buildings has grown over the years, fostering the adoption of sustainable solutions such as effective thermal insulation, more sustainable heating systems, and the utilisation of renewable energy sources. In this context, the European Union has implemented various initiatives aimed at improving the energy performance and comfort conditions of buildings through directives that establish mandatory standards for Member States. In Portugal, in response to European requirements, the Building Energy Certification System (SCEE) was established. Consequently, energy certification has become obligatory in various situations, including new constructions, building rehabilitations, transactions, and rental agreements. This dissertation presents a process of energy certification for a commercial building located in Portugal, specifically a hotel. Appropriate simulation tools were employed, and a detailed analysis of the surrounding environment and the building’s technical systems was conducted. The study identifies and quantifies the primary sources of energy waste, proposes energy improvement measures, and assesses their impact on the overall building performance. Additionally, an economic evaluation of the proposed interventions is included. The results demonstrate that the building requires interventions to meet the desired efficiency standards. Among the recommended improvements are the installation of a photovoltaic system, enhancing thermal insulation in the most deficient areas, and replacing thermal production boilers with more efficient equipment. This work illustrates that adopting energy efficiency measures can convert ongoing operational costs into amortizable investments, highlighting that the energy transition in the hospitality sector is not only an environmental necessity but also an economically advantageous strategy.
Buildings account for a significant portion of energy consumption in developed countries, constituting approximately 40% of final energy use in Europe. This high level of consumption has important societal implications, notably concerning greenhouse gas emissions, global warming, and climate change. In countries such as Portugal, energy use within buildings also contributes to increased energy dependency. Furthermore, for building owners and managers, energy consumption entails substantial costs. The pressure to enhance the energy efficiency of buildings has grown over the years, fostering the adoption of sustainable solutions such as effective thermal insulation, more sustainable heating systems, and the utilisation of renewable energy sources. In this context, the European Union has implemented various initiatives aimed at improving the energy performance and comfort conditions of buildings through directives that establish mandatory standards for Member States. In Portugal, in response to European requirements, the Building Energy Certification System (SCEE) was established. Consequently, energy certification has become obligatory in various situations, including new constructions, building rehabilitations, transactions, and rental agreements. This dissertation presents a process of energy certification for a commercial building located in Portugal, specifically a hotel. Appropriate simulation tools were employed, and a detailed analysis of the surrounding environment and the building’s technical systems was conducted. The study identifies and quantifies the primary sources of energy waste, proposes energy improvement measures, and assesses their impact on the overall building performance. Additionally, an economic evaluation of the proposed interventions is included. The results demonstrate that the building requires interventions to meet the desired efficiency standards. Among the recommended improvements are the installation of a photovoltaic system, enhancing thermal insulation in the most deficient areas, and replacing thermal production boilers with more efficient equipment. This work illustrates that adopting energy efficiency measures can convert ongoing operational costs into amortizable investments, highlighting that the energy transition in the hospitality sector is not only an environmental necessity but also an economically advantageous strategy.
Descrição
Palavras-chave
Eficiência Energética Simulação energética Gestão de Energia Hotelaria Certificação energética Descarbonização Energia renovável Estudo económico Energy certification Decarbonization Energy efficiency Renewable energy Economic study Energy management Hospitality Energy simulation