Navegando por Assunto "Arquitetura e conservação de energia"

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Acesso aberto (Open Access)
Análise de certificação de edificação pública de ensino e pesquisa visando nível A pelo RTQ-C através de ações de eficiência energética e análise econômica
(Universidade Federal do Pará, 2016-07-07) RIBEIRO, Ricardo Bastos Piqueira; BEZERRA, Ubiratan Holanda; http://lattes.cnpq.br/6542769654042813; TOSTES, Maria Emília de Lima; http://lattes.cnpq.br/4197618044519148
This dissertation presents the analysis of energy efficiency of the Ceamazon building, a research laboratory bounded to the Federal University of Pará. For this study it was utilized the prescriptive method of the “Regulamento Técnico da Qualidade para o Nível de Eficiência Energética de Edificações Comerciais, de Serviços e Públicas – RTQ-C”. RTQ-C’s energy analysis involves three distinct parameters: the building envelope, the artificial illumination system and the air-conditioning system. The study of the characteristics of each one of these systems provides material for the necessary calculations of the method, which will result in a numeric equivalent for each one, representing the efficiency of each system. This dissertation’s analysis was done mainly at the artificial illumination system and the air-conditioning system, since one previous analysis of the building’s envelope had already collected good results. The primary goal of this dissertation was to fit the building studied in the level A of energy efficiency proposed by the regulation. Thus, adjustments were made to the project from the energetic point of view, specifically on the artificial illumination and air-conditioning systems, aiming not only the maximum classification according to RTQ-C but also energy savings and the consequent reduction of costs. Therefore, proposals of inclusion of energetic alternatives to the building will also be presented, aiming at a higher energy efficiency, as well as economic viability analysis and energetic simulations of the alterations proposed to the building project, utilizing the softwares RetScreen and EnergyPlus.
Acesso aberto (Open Access)
Desempenho termoenergético da utilização de telhado vegetal em edificação no clima amazônico
(Universidade Federal do Pará, 2013-03-19) MARINHO, Dircirene Tavares; FRANCO, Irving Montanar; http://lattes.cnpq.br/4254203203850909; TOSTES, Maria Emília de Lima; http://lattes.cnpq.br/4197618044519148
The thermoenergetic performance of all construction work stems from the decisionmaking of the initial phase, and the thermo-physical characteristics of the materials used must be considered. The thermo-physical phenomenon of inertia in the roof vegetable offers resistance to the transport of thermic charge to inside the edification, reducing the demand of the electric energy needed to its climatic conditioning. At the same time, the low albedo of the roof vegetable contributes to mitigate the effects of the heat islands in urban environments. The bioclimatic and microclimatic study needed will determine the choice of the suitable construction materials, especially regarding the protection of surfaces exposed to solar heat load. This work deals with the experimental verification of the thermoenergetic performance of a room covered with grass in a place where the vegetation is predominant, in the Guamá Science and Technology Park, Federal University of Pará Campus. The key objective was to examine the thermal response of the slab by proving mitigation of heat spikes by physical phenomenon of thermal inertia, implying favorable results of energy performance by reducing the use of active cooling. It was performed preliminary characterization of the indoor and outdoor microclimate through the obtained values of temperature and relative humidity of air, and observed the evolution of internal environmental conditions in two phases, with the slab discovered and after application of vegetation. The quantitative results showed favorable performance of the roof vegetation in the moderation of heat flow through the slab, contributing to the reduction of the temperature of indoor air and consequent energy efficiency in buildings in Amazonian climate.