Navegando por Assunto "Sistema Fotovoltaico"

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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)
Dimensionamento, simulação e análise econômica de um sistema fotovoltaico conectado à rede com armazenamento de energia.
(Universidade Federal do Pará, 2022-04-29) ARAÚJO, Richardson Salomão de; MACÊDO, Wilson Negrão; http://lattes.cnpq.br/3386249951714088
This study proposes a grid-connected photovoltaic system (GCPVS) project with an energy storage system for Children and Adolescents Hospital (CAH) in Macapá-AP. It presents the sizing of the system contemplating the lithium-ion battery bank, modeling of the photovoltaic system, as well as the simulation of the operation of the proposed system, carried out in the computational tool Simulink/Matlab 2018b, in order to measure the estimate of energy to be produced. and stored. The objective is the generation and storage of energy during the day (off-peak hours), so that it can be used by the load at peak hours, whose tariff value is higher. After the simulations carried out for the months with the highest and lowest global irradiation incident on the generating plane, as well as for the days of the year with the highest and lowest irradiation, it was verified as a result obtained, in the latter case, that the system will still need to connect to the concessionaire. during peak hours, demonstrating that there will be days when the storage system cannot be loaded satisfactorily. It is also proposed an estimated budget of the system and its financial analysis in function of the estimated energy production in simulation. The economic viability is demonstrated, with a return on investment in nine years, over the life of the GCPVS, as well as an economic sensitivity analysis based on financial parameters such as energy tariff value and watt-peak cost of the system. However, the system will fulfill its mission of reducing the cost of the CAH energy bill in a sustainable way and can be expanded (scalable)
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.
Acesso aberto (Open Access)
Utilização de métodos ativos na transformação de um prédio em um edifício de energia zero: estudo de caso da biblioteca central da Universidade Federal do Pará
(Universidade Federal do Pará, 2020-05-06) ALBUQUERQUE, Bruno Santana de; TOSTES, Maria Emília de Lima; http://lattes.cnpq.br/4197618044519148; BEZERRA, Ubiratan Holanda; http://lattes.cnpq.br/6542769654042813
This dissertation proposes an energetic evaluation of a University Building transformation into a Zero Energy Building (ZEB), by using active methods such as Lighting System (LS), Photovoltaic System (PV) and Storage System (SS), and presents its application in the form of a case study. The purpose of this study is to analyze the energy balance between the UFPA Central Library, the implementation of the LS, the PV, the distribution system and the SS, aiming at the load autonomy. Satisfactory results were obtained for different scenarios created by the load variability, according to the university calendar, and the photovoltaic generation intermittency. The proposed LS reduced the building consumption by 44%. Using the PV system generates enough energy to supply most of the building load, however only 53% of this energy benefits the building, the energy surplus supplies other university loads. However, the SS integration allows the building to benefit 77% of the generated energy. Therefore, the proposed systems provide the ZEB concept to the study case building.