Documentação de convênios
URI permanente desta comunidadehttps://rigalileo.itegam.org.br/handle/123456789/173
Trabalhos ténico-científico oriundos de convênios com universidades para oferta de turmas de mestrado e doutorados no Estado do Amazonas
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18 resultados
Resultados da Pesquisa
Item Pine Wood Drying at High Temperatures(INSTITUTO DE TECNOLOGIA, 2015) MATIAUDA, Mario; LEÓN BENÍTEZ, Juan B. de; FREAZA, Nora; RIVERO, Marta; MAGALHÃES, Edilson MarquesThe study proposes a mathematical model to simulate the drying of Pinus elliottii wood at high temperatures, considering heat and mass transfer phenomena. The model was experimentally validated, demonstrating the evolution of moisture content and temperature in the wood during the process. The results indicate that the model shows good agreement with experimental data, proving useful for predicting drying conditions under various scenarios.Item Procedimentos de Avaliação em Prevenção de Riscos Ergonômicos através de Estações de Trabalho Crítico(INSTITUTO DE TECNOLOGIA, 2015) LEITE, Jandecy Cabral; QUEIROZ, Getúlio Lima de; BRITO JUNIOR, Jorge de Almeida; NASCIMENTO, Enily Vieira do; PIRES, Marcello Fonseca; Marcos Allan Leite dos ReisThe study examines ergonomic risk factors affecting production line workers at Amapoly Indústria e Comercio LTDA, identifying health impacts such as musculoskeletal disorders (MSDs). Using qualitative and quantitative methods, postures, environmental, and organizational conditions were evaluated, focusing on critical workstations. The results emphasize the need for ergonomic interventions to enhance comfort and safety, reducing occupational injuries.Item Uma análise sobre a realidade do esgotamento sanitário na cidade de Manaus(INSTITUTO DE TECNOLOGIA, 2014) CARDOSO, Isabelle de Oliveira; Eduardo de Magalhães BragaThe article examines the reality of sewage sanitation in Manaus, emphasizing its importance for the municipality and the evolution of service quality in recent years. Using bibliographic and electronic data, the author notes that, despite advancements such as the increase in new sewage connections, the system still operates slowly. The study also addresses public health impacts, including diseases linked to inadequate sanitation.Item Análise Exergética no Processo de Aquecimento de Licor Pobre em uma Refinaria de Alumina(Instituto de Tecnologia, 2015) SANTOS, Antonio Marcos Nascimento dos; BATISTA, Clauderino da SilvaThis study identifies energy loss points through exergy balances in heat exchangers used to heat spent liquor in the Bayer process for alumina extraction. Energy and exergy balances were performed in exchangers using live steam and regenerative steam, with significant losses identified in exchangers 4 and 5. The exergoeconomic analysis highlighted financial losses, providing a foundation for energy recovery actions and operational cost reduction.Item Uso do Controle Estatístico de Processo (CEP) na Gestão de Operações Produtivas em uma Indústria do Polo Industrial de Manaus(Instituto de Tecnologia, 2015) OLIVEIRA, Sidney dos Santos; LEITE, Jandecy CabralThe study explores the application of Statistical Process Control (SPC) in an industry within the Manaus Industrial Pole (PIM), emphasizing its role in monitoring and improving production processes. Through control charts and graphical analysis, the research demonstrates how SPC can identify variability and root causes of non-conformities, supporting cost reduction and quality enhancement. The case study focuses on the thermoforming process of thermoplastic resin plates, highlighting the tool's benefits in operational management.Item Análise Energética do Sistema de Resfriamento de uma Planta de Compressores de Ar Modelo ZH9000(Instituto de Tecnologia, 2015) FREIRE, Wildemar de Aguiar; BRAGA, Eduardo de MagalhãesThis study evaluates the cooling system of ZH9000 air compressors in an alumina refinery, addressing overheating and energy inefficiency. The proposed solution involves plate heat exchangers to isolate the water circuit, minimizing contamination and enhancing thermal performance. Findings suggest annual savings of R$600,000 and lower maintenance costs, with a 10-month payback period.Item Desenvolvimento de um Sistema Inteligente para Determinação de Set Point no Controle da Área Superficial da Alumina: Aplicação de Lógica Fuzzy em Calcinadores de Leito Fluidizado(Instituto de Tecnologia, 2015) COSTA, Hugo Pedro de Sousa Valente da; COSTA JUNIOR, Carlos Tavares daThis study investigates the implementation of a fuzzy system to control the specific surface area of alumina in fluidized bed calciners. The fuzzy methodology was chosen for its ability to handle complex and imprecise problems, leveraging empirical knowledge from experts. The developed system proposes temperature and pressure set points to optimize alumina quality and operational safety. Simulation results demonstrated the system's effectiveness, with adjustments based on real data collected from January to December 2014.Item Identificação de Sistemas Dinâmicos Aplicada: Desenvolvimento de Software Baseado em Mínimos Quadrados(Instituto de Tecnologia, 2015) RAMOS, André Camarão; SILVA, Orlando FonsecaDue to fluctuations in prices of raw material markets, optimization and cost reduction are top actions in alumina refinery and powerhouse processes. The way to achieve that is by keeping precise mathematical plant models and good controlling performance. In this paper, the role of process identification is presented under non-recursive single input least-square problem, and also in state space form. As a tool for turning least-square estimation problems easy and fast, a worksheet software was built and applied on calcination process and over steam generation on a 15 bar boiler.Item SOLUÇÃO DE EQUAÇÕES DE BALANÇO POPULACIONAL USANDO A TÉCNICA DA TRANSFORMADA DE LAPLACE(Instituto de Tecnologia, 2015) CAMPOS, Kátia Tavares; BATISTA, Clauderino da SilvaThis study proposes a solution for population balance equations (PBE) with hyperbolic and nonlinear formulations using the Laplace transform technique with numerical inversion. The methodology estimates the particle size distribution density function and predicts the dynamic behavior of homogeneous particulate systems, considering convective and diffusive transport, as well as birth and death rates of particles. The results were obtained through computational simulation in Fortran 90/95 using the DINLAP subroutine from the IMSL library and validated with literature data, showing excellent agreement.Item Simulação da Produção na Precipitação Hydro Alunorte(Instituto de Tecnologia, 2015) MACIEL, Milton Jasonn Neves; BATISTA, Clauderino da SilvaThe simulator of solids concentration in the production of the precipitation process is based on a model made by mass balances in tanks, where it was necessary to act to boost the level of production in the competitive market. The simulator considers nucleation, growth, breakdown, agglomeration, solubility, and crystallization in precipitators. The model was used to solve a significant problem in the process variable (mass concentration in the precipitation production chain) due to its large variations and losses, thus predicting production behavior throughout the circuit to its final stage. Numerical and laboratory results were obtained and compared, allowing a critical evaluation of this solution methodology.