Navegando por Assunto "Photovoltaic System"

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Balanço energético de um laboratório de pesquisa em cenários pré, durante e pós pandemia, visando certificação NZEB
(Universidade Federal do Pará, 2022-06-27) LAVÔR, Matias Ribeiro Máximo de; LEAL, Adônis Ferreira Raiol; http://lattes.cnpq.br/4099411616990036
Photovoltaic systems have an essential role to improve the energy efficiency of buildings, so that when integrated, it works directly on the energetic balance, with a percentage of load to be compensated by the renewable energy source, important parameter according to latest efficiency requirements. National building labeling is already mandatory for federal buildings, demanding, among other requirements, the compliance of new procedure named Instrução Normativa Inmetro para a Classificação de Eficiência Energética de Edificações Comerciais, de Serviços e Públicas (INI-C), that replaced the old procedure named Regulamento Técnico da Qualidade para o Nível de Eficiência Energética de Edificações Comerciais, de Serviços e Públicas (RTQ-C). The new procedure brings criteria and methods for classifying energy efficiency for commercial, service and public buildings, aiming to obtain labeling buildings. The new instruction also includes the distributed generation in energetic balance of building, as well as the definition of NZEB buildings and carbon dioxide emissions evaluation method. Since 2020, the world has been experienced an exceptional period of the Covid-19 pandemic, and by changing the social dynamics, introduced temporary or permanent transitions in energetic balances and standards of buildings electricity consumption at the whole planet, due to geographic extension of pandemic effects. In this regard, this study seeks to present an analysis of the energetic balance in different chronological scenarios for the building named Centro de Excelência em Eficiência Energética da Amazônia (CEAMAZON), a public institution of Research, Development and Innovation, linked to UFPA, located in the Science Park and Technology of Guamá. Additionally, it shows a short analysis of the new INI-C related to the NZEB and carbon emissions evaluation methodology, considering the new implanted distributed generation system, and the electric vehicle charging station located nearby, highlighting the set of building characteristics that can classify its energy efficiency, and demonstrating essential parameters for certification.
Acesso aberto (Open Access)
Contribuição da geração solar fotovoltaica na certificação de edificações públicas pelo RTQ-C e em edifícios de energia zero: laboratório de ensino da Universidade Federal do Pará
(Universidade Federal do Pará, 2020) SILVA, Hosaías Alves dos Prazeres; TOSTES, Maria Emília de Lima; http://lattes.cnpq.br/4197618044519148
This work presents the contribution of solar photovoltaic generation as a renewable source in the methodology for obtaining Level A Label in Energy Efficiency certification and for the transformation into a Zero Energy Building, being applicable to buildings and public teaching laboratories. The methodology step-by-step essentially consists of two stages: the first, through an energetic diagnosis of the building analyzed, following the guidelines established in the Technical Regulation on Quality in Commercial, Service and Public Buildings - RTQ-C (in portuguese), resulting in a proposal of energetic, financial and environmental improvement processed with the aid of the RETScreen® software; and the second, dimensioning a photovoltaic solar generation system, based on local measurement data and the Meteonorm® software, as a bonus for obtaining the Level A Label of the RTQ-C levels and with energy production capacity that makes the energetic balance of the building as positive, making it a Zero Energy Building. In order to contextualize the relevance of the work and update the reader in the state of the art applicable to the methodology, a bibliographic review is presented, directed to the benefits of Energy Efficiency in public buildings and to the RTQ-C; to the current scenario, application and contribution of Solar Photovoltaic Energy in sustainable development, in obtaining nationally and internationally recognized classifications for public buildings; and the concepts currently used by the academic community to characterize Zero Energy Buildings. The bibliographic review and methodology were applied in a case study of the Laboratory of Electrical and Computer Engineering – LEEC (in portuguese), located at the Campus Guamá of the Federal University of Pará, with presentation of the energetic, financial and environmental results, showing that it is a solution to be applied in public institutions and buildings that have available space and similar infrastructure to that of the LEEC.
Acesso aberto (Open Access)
Gestão de armazenamento de energia integrado com fontes renováveis e intermitentes
(Universidade Federal do Pará, 2023-07-13) MORAES, Wuanda Letícia da; BEZERRA, Ubiratan Holanda; http://lattes.cnpq.br/6542769654042813
This work address the configuration of energy storage integrated to intermittent renewable sources, especially photovoltaic systems, connected to the electricity distribution network. This is the result of the Research and Development Project, “Multimodal Electric Mobility Intelligent System (R&D) Applied in the Amazon Region (SIMA)”, developed at the Amazon Energy Efficiency Center (CEAMAZON), where there is a mini electric network with photovoltaic generation, diesel generation, electric vehicles charging stations, energy storage and coupling point with the CA network of the university city Prof. Dr. José da Silveira Netto, of Federal University of Pará. The mini electric network management is accomplished by a hybrid inverter associated with a load controller, capable of informing and managing the power that is being generated by the FV arrangements, the charging state of the battery bank, which also has its own management, through the BMS (Battery Management System); and the power being injected into the AC bus. With the case study, management strategies were defined through demand-side energy management, time shift, with a 55% reduction in the total cost of the 2022 annual bill for the CEAMAZON building. In addition, an economic feasibility analysis was presented through the tip load factor (FCp) with PDE 2032 VLP , arriving at a positive and justifiable result for application. Finally, a carbon exchange analysis arrived at a sustainability equivalent of 11 trees typical of the Amazon rainforest cultivated for the total emissions avoided in 2022 in the university city; and a carbon credit 298.43 tCO2, corresponding to R$ 131,902.4 for the carbon market.
Acesso aberto (Open Access)
Implantação de sistema fotovoltaico de baixo custo em arquitetura de rádio centralizada
(Universidade Federal do Pará, 2020-01-31) SARAIVA, Paline Alves; CARDOSO, Diego Lisboa; http://lattes.cnpq.br/0507944343674734
The growing demand for higher data rates and better quality of Internet services has resulted in high investments in mobile network infrastructure by operators. In this context, Centralized Radio Architecture (CRA) is a promising solution that relies on centralizing, sharing, and better allocating network resources, resulting in reduced deployment and operation costs when adequately planned. While the benefits of CRA are numerous, this cost reduction can also be enhanced through the adoption of alternative energy sources. One of the options for this, it is Growing demand for higher data rates and better quality of Internet services has resulted in high investments in mobile network infrastructure by operators. In this context, Centralized Radio Architecture (CRA) is a promising solution that relies on centralizing, sharing, and better allocating network resources, resulting in reduced deployment and operation costs when adequately planned. While the benefits of CRA are numerous, this cost reduction can also be enhanced through the adoption of alternative energy sources. One of the options for this equipment through optimization approaches, considering the energy demand of CRA, represents a challenge to be overcome. To this end, this work proposes a strategy to minimize the cost of imple- menting a photovoltaic system by reducing the number of inverters, formulated as an Integer Linear Programming (ILP) problem, to further reduce costs related to CRA. From the results, it is evident that the proposed optimization technique, implied in the average reduction of the Total Cost of Ownership (TCO) of the photovoltaic system in about 0.02 million reais, as well as in the environmental sustainability through the reduction of carbon dioxide emissions (CO2) in the atmosphere.
Acesso aberto (Open Access)
Sistemas fotovoltaicos aplicados em cenário de rede 5G
(Universidade Federal do Pará, 2020-01-31) OLIVEIRA, Carmela Souza; COSTA, João Crisóstomo Weyl Albuquerque; http://lattes.cnpq.br/9622051867672434
With the deployment of the next generation of mobile networks, a significant increase in data consumption is estimated and, consequently, a substantial impact on energy consumption. In light of this scenario, it is interesting to think of alternative sources that can meet this energy demand and additionally act to mitigate greater environmental impacts. Based on this economic and, above all, environmental perspective, this work proposes the use of a photovoltaic system as a strategy for the potentialization of energy consumption in a less aggressive way to the environment. The experiments carried out evaluate the viability of the proposal from the implementation in two RAN (Radio Access Network) architectures that can be employed to the new generation (5G). The results demonstrate the financial viability in the installation of photovoltaic system when compared to conventional sources of power generation.