Otimização multiobjetivo orientada ao desempenho térmico para o projeto de edificações de baixo consumo de energia na Região Sul do Brasil

Abstract

Resumo O objetivo deste artigo é apresentar o potencial de uma otimização multiobjetivo orientada para soluções de projeto arquitetônico que contemplem melhores condições de conforto térmico e redução do consumo de energia. Para tanto, o estudo é aplicado a um modelo constituído de única zona térmica, para o qual foram considerados distintos valores para os parâmetros construtivos. São considerados para o envelope: a orientação solar, as propriedades dos materiais opacos e transparentes da envoltória, as dimensões da janela e da proteção solar. Utilizou-se nas simulações o software EnergyPlus associado à ferramenta de parametrização e otimização JEPlus+EA. O processo de otimização visa minimizar os indicadores de graus-hora para aquecimento (GHa) e de resfriamento (GHr). Essa minimização revela-se de interesse para as cidades situadas na Região Sul do Brasil de clima temperado úmido, nas quais há necessidade de adoção de estratégias de projeto conflitantes em função das condições de inverno e verão. Os resultados para as configurações dos envelopes e orientação de implantação do modelo são apresentados por meio da Fronteira de Pareto. Assim, torna-se possível identificar a relação entre os diversos parâmetros de projeto assumidos, com a minimização dos requerimentos estabelecidos de consumo de energia para o modelo arquitetônico analisado.

The impact of climate change on the thermal-energy performance of the SCIP and ICF wall systems for social housing in Brazil

“…The study was developed through the use of JePlus program version 2.8, and the advantage of using this program for parametric simulations has been demonstrated by several studies. 76 , 77 A parametric analysis is a method that assists designers and applied researchers in the recognition of the most effective combination and optimization strategy to be considered in a specific context. 28 , 29 This is a relevant method to understand the development of specific design strategies, as it helps identify the influence of each input and its impact on the overall output.…”

“…In the parametric analysis carried out, one building component varied each time together while others were kept fixed and it allowed a critical understanding of the most sensitive parameter considered in terms of the delivery thermal-energy performance in the building. 76–79…”

“…In the parametric analysis carried out, one building component varied each time together while others were kept fixed and it allowed a critical understanding of the most sensitive parameter considered in terms of the delivery thermal-energy performance in the building. [76][77][78][79] Finally, the parametric simulation considered as variables the thickness of EPS panels of the roof, floor and wall system, the weather files and hybrid ventilation control mode. The variable design parameters and assumed values/ranges are placed in Table 3.…”

Multi-objective optimization of school building envelope for two distinct geometric designs in southern Brazil

“…Due to the multiple design factors that directly influence buildings’ performances, the construction sector has been searching sharply for new design solutions. 32 Covering several conflicting criteria to achieve more efficient alternatives is a hard task, and evaluating buildings’ energy performance requires complex methods. 33 Multi-objective optimization has been standing out and drawing a lot of attention.…”

“…In this study, the EnergyPlus software was coupled with a hybrid algorithm developed based on CMA-ES (Covariance Matrix Adaptation) and HDE (Hybrid Differential Evolution) algorithms. Linczuk and Bastos 32 executed a similar study based on multi-objective optimization with the NSGA-II algorithm to obtain low energy consumption of a residential building project located in southern Brazil. The author used EnergyPlus software along with jEPlus and jEPlus+EA parametrization/optimization tools.…”