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Authors
Abstract(s)
Os edifĂcios e a melhoria da eficiĂȘncia energĂ©tica sĂŁo uma componente chave no caminho da UniĂŁo Europeia (UE) para um novo paradigma energĂ©tico visto representarem cerca de 40% do consumo de energia final da UE, resultando assim em elevados custos e emissĂ”es de diĂłxido carbono (CO2) para a atmosfera, e consequentemente contribuindo para os problemas dos efeitos de estufa e das mudanças climĂĄticas.
Com vista Ă redução do consumo de energia no parque edificado europeu, a UE publicou a 19 de Maio de 2010 a directiva 2010/31/UE relativa ao desempenho energĂ©tico dos edifĂcios e que reformula a directiva 2002/91/CE. A nova directiva de 2010 exige que a partir de 31 de Dezembro de 2020 todos os novos edifĂcios da UE sejam edifĂcios NZEB (Nearly Zero Energy Building) ou seja, com balanço energĂ©tico anual nulo.
Os NZEB sĂŁo portanto edifĂcios com elevado nĂvel de eficiĂȘncia energĂ©tica, nĂŁo sĂł devido ao reduzido consumo de energia em relação a edifĂcios convencionais, mas tambĂ©m devido Ă existĂȘncia de sistemas de produção de energia local que compensam as necessidades energĂ©ticas, possibilitando assim um balanço de consumo de energia anual quase zero, no edifĂcio.
Deste modo pretende-se com a presente dissertação caracterizar as tĂ©cnicas e tecnologias existentes que permitem a poupança e a produção de energia, de modo a que os edifĂcios novos correspondam a NZEB, ou edifĂcios antigos possam convergir para NZEB, constituindo assim um contributo para o conhecimento destas tecnologias e encorajando a sua aplicação.
Na presente dissertação abordou-se tambĂ©m um caso de estudo de modo a verificar o impacto de algumas das estratĂ©gias para redução do consumo de energia, num edifĂcio histĂłrico, concluindo-se que Ă© possĂvel reduzir as necessidades energĂ©ticas de um edifĂcio histĂłrico atĂ© cerca de 50%, atravĂ©s da implementação de medidas de eficiĂȘncia energĂ©tica. Este estudo foi efectuado atravĂ©s de simulação do desempenho energĂ©tico de um ciclo anual do referido edifĂcio recorrendo aos softwares de modelação e simulação energĂ©tica (Design Builder e Energy Plus).
Abstract: Buildings and building efficiency are a key component in the path of the European Union (EU) towards the new energy efficiency paradigm because they represent about 40 % of the final energy consumption in the EU, thus resulting in high costs and emissions of carbon dioxide (CO2) into the atmosphere and therefore contributing to the greenhouse gases problems and climate changes. In order to reduce energy consumption in the European building stock, the EU published in May 19, 2010 the Directive 2010/31/EU on the energy performance of buildings, thus recasting Directive 2002/91/CE. The new Directive requires that after December 31, 2020, all new EU buildings will be zero energy balance buildings (NZEB). The NZEB are high energy efficiency buildings, not only due to the reduced power consumption compared to conventional buildings, but also because of the existence of local energy production systems, thus achieving to reach the almost zero annual energy balance. Therefore the main goal of this thesis is to characterize the existing techniques and technologies that allow energy saving and energy production in buildings so that new buildings meet the NZEB condition, or old buildings converge to NZEB. The case study focused allowed to verify the impact of some of the described strategies for reducing energy consumption in an historical building, and to understand the feasibility of the implementation of these technologies in the referred building, providing an opportunity for learning the modeling and energy simulation software (Design Builder and Energy Plus) which was used to simulate an annual energy cycle.
Abstract: Buildings and building efficiency are a key component in the path of the European Union (EU) towards the new energy efficiency paradigm because they represent about 40 % of the final energy consumption in the EU, thus resulting in high costs and emissions of carbon dioxide (CO2) into the atmosphere and therefore contributing to the greenhouse gases problems and climate changes. In order to reduce energy consumption in the European building stock, the EU published in May 19, 2010 the Directive 2010/31/EU on the energy performance of buildings, thus recasting Directive 2002/91/CE. The new Directive requires that after December 31, 2020, all new EU buildings will be zero energy balance buildings (NZEB). The NZEB are high energy efficiency buildings, not only due to the reduced power consumption compared to conventional buildings, but also because of the existence of local energy production systems, thus achieving to reach the almost zero annual energy balance. Therefore the main goal of this thesis is to characterize the existing techniques and technologies that allow energy saving and energy production in buildings so that new buildings meet the NZEB condition, or old buildings converge to NZEB. The case study focused allowed to verify the impact of some of the described strategies for reducing energy consumption in an historical building, and to understand the feasibility of the implementation of these technologies in the referred building, providing an opportunity for learning the modeling and energy simulation software (Design Builder and Energy Plus) which was used to simulate an annual energy cycle.
Description
Dissertação para obtenção do grau de Mestre em Engenharia Civil na Ărea de EdificaçÔes
Keywords
NZEB Directiva 2010/31/EU Directive 2010/31/EU EficiĂȘncia energĂ©tica Energy efficiency Design builder
Citation
JORGE, AndrĂ© Fernando Medeiros - ConvergĂȘncia para NZEB de um edifĂcio classificado. Lisboa: Instituto Superior de Engenharia de Lisboa, 2013. Dissertação de mestrado.
Publisher
Instituto Superior de Engenharia de Lisboa