Compressors
Mostrando 1-12 de 37 artigos, teses e dissertações.
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1. Study of the electricity consumption reduction of a compressed air system: the case of a steelmaking company
Abstract This work aims to reduce the energy consumption and thus increase the availability of blast furnace compressors of a steelmaking company, located in Alto Paraopeba region in Minas Gerais state, Brazil, through the elimination of waste points in the compressed air distribution. In order to develop this work, an ultrasound test in the compressed air l
REM, Int. Eng. J.. Publicado em: 2017-12
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2. Mechanical and Thermo-Physical Properties of Short Glass Fiber Reinforced Polybutylene Terephthalate upon Aging in Lubricant/Refrigerant Mixture
In this study, the relationship between structure and mechanical properties of aged PBT composite was investigated. Short glass fiber reinforced PBT composites were subjected to aging tests in environments typically found in hermetic compressors. Diffusion kinetics were addressed by a periodic control of samples weight, and samples aged in oil presented mass
Mat. Res.. Publicado em: 29/09/2016
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3. Genetic algorithm for preliminary design optimisation of high-performance axial-flow compressors
This work presents an approach to optimise the preliminary design of high-performance axial-flow compressors. The preliminary design within the Gas Turbine Group at ITA, is carried on with an in-house computational program based upon the streamline curvature method, using correlations from the literature to assess the losses. The choice of many parameters of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/12/2011
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4. Análise de fadiga e confiabilidade em hastes de pistão de compressores alternativos / Fatigue and reliability analysis on reciprocating compressors piston rod
Este trabalho visa uma análise de confiabilidade e fadiga em uma haste de compressor alter-nativo de pistão. A metodologia empregada para análise consiste no levantamento da solicita-ção na haste e cálculos de resistência à tração, flambagem e fadiga. São também apresentados resultados de confiabilidade e vida útil do componente. A junção dest
Publicado em: 2011
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5. Determination of stall and choke limits of a transonic axial flow compressor using the straemline curvature method
The necessity for high performance axial compressors for various applications is shown. The basic theory associated with the study of these machines is presented. A method for calculating the properties of the flow along the compressor is presented. Depending on the design requirements the number of stages is selected and an appropriate shape of the channel
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/10/2010
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6. Object tracking from compressed video using Kalman Filter and a novel spatiotemporal motion-vector filter.
Video Object Tracking plays a crucial role on several Computer Vision applications, such as Video Surveillance, Intelligent Transportation System (ITS), Human Machine Interface (HMI), Video Indexing and Shopping Behavior Analysis. Nevertheless, the processing power demanded by object tracking techniques still consists in a bottleneck to their wider adoption.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/10/2010
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7. Análise estocástica do comportamento dinâmico de estruturas via métodos probabilísticos / Stochastic analysis of structural dynamic behavior via probabilistic methods
Esta dissertação tem como objetivo geral levar `a realidade industrial subsídios para a modelagem e análise de sistemas mecânicos lineares com variabilidade, assim como metodologias computacionais para quantificação de incertezas, para fins de aplicação em projeto. Neste sentido, foram realizados estudos sobre técnicas de modelagem e análise estoc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
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8. Evaluation of 5-axis HSC dynamic behavior when milling TiAl6V4 blades
Gas combustion represents the second principal way of electricity generation due to its disposal, and smaller dimension and pollution capacity when compared with diesel engines. The conversion of natural gas in electricity is made through gas turbines, and the rotors of its compressors are components that present significant difficulty in its manufacture. Th
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-09
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9. EXPLORAÇÃO DE OPERADORES ARITMÉTICOS NA TRANSFORMADA RÁPIDA DE FOURIER / ARITHMETICS OPERATORS EXPLORATION IN FAST FOURIER TRANSFORM
The power consumption reduction in the fast Fourier transform (FFT) is important because applications in battery-powered embedded systems grows daily. Thus this work focuses on the application of techniques to reduce power in specific projects of FFT algorithms. The goal is to achieve an architectural exploration in the FFT core, the decimation in time butte
Publicado em: 2010
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10. Dimensionamento de uma rede de distribuição de água de resfriamento para um compressor de ar / Pipe sizing for a distribution of cooling water for an air compressor
No presente trabalho é realizado um estudo do sistema de resfriamento de um compressor de ar com a finalidade de reduzir o aquecimento excessivo da máquina. O sistema é resfriado à água que é bombeada das torres de resfriamento para o compressor. O ar comprimido gerado é utilizado para fabricação de garrafas PET de uma companhia de bebidas. A metodo
Publicado em: 2010
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11. Object tracking from compressed video using Kalman Filter and a novel spatiotemporal motion-vector filter.
Video Object Tracking plays a crucial role on several Computer Vision applications, such as Video Surveillance, Intelligent Transportation System (ITS), Human Machine Interface (HMI), Video Indexing and Shopping Behavior Analysis. Nevertheless, the processing power demanded by object tracking techniques still consists in a bottleneck to their wider adoption.
Publicado em: 2010
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12. Modelling hermetic compressors using different constraint equations to accommodate multibody dynamics and hydrodynamic lubrication
In this work, the steps involved for the modelling of a reciprocating linear compressor are described in detail. The dynamics of the mechanical components are described with the help of multibody dynamics (rigid components) and finite elements method (flexible components). Some of the mechanical elements are supported by fluid film bearings, where the hydrod
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-03