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| Documento principal | 15.95 MB | Adobe PDF |
Abstract(s)
Hoje em dia passamos a maior parte do tempo no interior de edifícios e não é de estranhar
que nas ultimas décadas os seus consumos energéticos tenham aumentado
significativamente. Existem diversos factores que influenciam esse aumento de consumo,
além do excessivo uso de pequenos equipamentos eléctricos e electrodomésticos, a utilização
de sistema de climatização para aquecimento, arrefecimento e produção de águas quentes
sanitárias.
De acordo com esta problemática este trabalho visa o estudo térmico de uma moradia
unifamiliar utilizando-se para isso dois métodos de cálculo; o cálculo pela analise do RCCTE e
através de uma simulação dinâmica utilizando o EnergyPlus com a interface do DesignBuilder.
O método de cálculo RCCTE, respeita o actual regulamento (Decreto-Lei 80/2006 de 4 de
Abril) e foi acompanhado com bastante rigor no sentido de se obter o balanço energético final
credível, onde é possível analisar quatros variáveis; as necessidade de aquecimento, de
arrefecimento, de energia para águas quentes sanitárias e as necessidades globais de energia
primária.
O método da simulação dinâmica de edifícios compreende um estudo extremamente
detalhado onde é possível modular o edifico de acordo com a sua geometria e localização
geográfica. Permite ainda adicionar diversos tipos de cargas internas, como sejam
equipamentos eléctricos, equipamentos de catering, taxa de metabolismo, personalizar e
definir perfis de ocupação, de iluminação, de utilização de equipamentos e até mesmo de
climatização ou águas quentes sanitárias. A partir do software DesignBuilder, com uma
interface gráfica apelativa e recorrendo ao motor de cálculo EnergyPlus, é possível simular e
alterar qualquer parâmetro no interior da habitação. Com este resultado consegue-se
desagregar nos dados de saída os diversos consumos eléctricos, assim como avaliar o consumo
da habitação e o seu comportamento térmico.
Depois de estudados ambos os métodos de cálculo será feita uma análise comparativa sobre
os consumos de energia eléctrica para ambos os casos, assim como uma verificação sobre a
viabilidade dos métodos de cálculo.
Nowadays we spend most time inside buildings and it is not surprising to see, that in recent decades their energy consumption has increased significantly. There are several factors influencing this consumption, as well as excessive use of small electrical appliances and the use of air conditioning system for heating, cooling and hot water production. According to this problem this paper aims to study the heat of a single family house using two methods for this calculation; the calculation using the actual legislation, RCCTE, and through a dynamic simulation using EnergyPlus with DesignBuilder interface. The calculating method of RCCTE was accompanied with great accuracy in order to get a credible final energy balance, where it is possible to analyze four variables; the need for heating, cooling, for hot water and the global needs for primary energy. The method for dynamic simulation of buildings comprises an extremely detailed study where it is possible to modulate the buildings according to their geometry and location. It also allows to add different types of internal loads, such as electrical equipment, catering equipment, rate of metabolism, customize and define profiles of occupancy, lighting, use of equipment, and even air conditioning or hot water. From the software DesignBuilder, with an appealing graphical interface, and using the EnergyPlus calculation engine, you can simulate and change any parameter inside the house. With this result it is possible to disaggregate the data output of the various electrical consumption and to evaluate the consumption of the buildings and its thermal behavior. After studied both methods of calculation will be made a comparative analysis on the electricity consumption for both cases, as well as check the feasibility of the methods of calculation.
Nowadays we spend most time inside buildings and it is not surprising to see, that in recent decades their energy consumption has increased significantly. There are several factors influencing this consumption, as well as excessive use of small electrical appliances and the use of air conditioning system for heating, cooling and hot water production. According to this problem this paper aims to study the heat of a single family house using two methods for this calculation; the calculation using the actual legislation, RCCTE, and through a dynamic simulation using EnergyPlus with DesignBuilder interface. The calculating method of RCCTE was accompanied with great accuracy in order to get a credible final energy balance, where it is possible to analyze four variables; the need for heating, cooling, for hot water and the global needs for primary energy. The method for dynamic simulation of buildings comprises an extremely detailed study where it is possible to modulate the buildings according to their geometry and location. It also allows to add different types of internal loads, such as electrical equipment, catering equipment, rate of metabolism, customize and define profiles of occupancy, lighting, use of equipment, and even air conditioning or hot water. From the software DesignBuilder, with an appealing graphical interface, and using the EnergyPlus calculation engine, you can simulate and change any parameter inside the house. With this result it is possible to disaggregate the data output of the various electrical consumption and to evaluate the consumption of the buildings and its thermal behavior. After studied both methods of calculation will be made a comparative analysis on the electricity consumption for both cases, as well as check the feasibility of the methods of calculation.
Description
Keywords
Habitação unifamiliar - Sistemas de climatização Habitação unifamiliar - Consumo energético - Avaliação Habitação unifamiliar - Climatização - Aspectos técnicos
Pedagogical Context
Citation
Publisher
Universidade da Beira Interior