Plate Heat Exchangers
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Heat transfer to immiscible liquid mixtures in a spiral plate heat exchanger
This work presents new predictive correlations for heat transfer to immiscible liquid-liquid mixtures in a spiral plate heat exchanger. Liquid-liquid heat transfer studies were carried out in spiral plate heat exchangers for the water-octane, water-kerosene, and water-dodecane systems. For each composition of the mixture, the mass flow rate of the cold fluid
Braz. J. Chem. Eng.. Publicado em: 2013-06
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2. Distribuição do tempo de residência e letalidade no processamento térmico contínuo de líquidos com escoamento laminar não ideal em trocadores bitubulares. / Residence time distribution and lethality in the continuous thermal processing of liquids with non ideal laminar flow in bitubular exchangers.
Tubular heat exchangers are widely used for thermal processing of viscous liquid foods because they have larger hydraulic diameters than the plate heat exchangers. The calculation of lethality in this type of exchanger is directly related to velocity profile and the residence time distribution (RTD). For the laminar flow of viscous fluids, Newtonian and non-
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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3. SIMULATION OF BRAZED PLATE HEAT EXCHANGERS FOR CASCADE VAPOR COMPRESSION SISTEM / SIMULAÇÃO DE TROCADORES DE CALOR DE PLACAS PARA SISTEMAS DE REFRIGERAÇÃO EM CASCATA
Desenvolveu-se um modelo de simulação para trocadores de calor de placas soldadas (BPHE ¿ Brazed Plate Heat Exchanger) operando em regime permanente em um sistema de refrigeração em cascata por compressão de vapor, ou seja, condensador, trocador de calor intermediário (ou condensador em cascata) e evaporador. O modelo adota o método de análise local
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/05/2011
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4. Non-newtonian flow and pressure drop of pineapple juice in a plate heat exchanger
The study of non-Newtonian flow in plate heat exchangers (PHEs) is of great importance for the food industry. The objective of this work was to study the pressure drop of pineapple juice in a PHE with 50º chevron plates. Density and flow properties of pineapple juice were determined and correlated with temperature (17.4 < T < 85.8ºC) and soluble solids con
Brazilian Journal of Chemical Engineering. Publicado em: 2010-12
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5. Study of hydrodynamics and heat transference from liquid whole egg through plate with three formats chevron / Estudo da hidrodinamica e transferencia de calor do ovo integral liquido atraves de placas com tres formatos chevron
At this work are showed the heat transference and hydrodynamics of liquid egg flow between ducts with corrugated walls, simulating plate heat exchangers. The contour conditions admitted was the constant temperature in the walls during the fluid heating. The whole egg rheology was experimentally determinated in a extend temperature range (289 ? 335K). The egg
Publicado em: 2008
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6. DETERMINAÇÃO EXPERIMENTAL DOS COEFICIENTES DE TRANSPORTE DA PASTA DE GELO EM TROCADORES DE CALOR DE PLACAS / EXPERIMENTAL DETERMINATION OF TRANSPORTATIONS COEFFICIENTS FOR ICE SLURRY IN PLATE HEAT EXCHANGERS
Ice slurry is an aqueous solution from which ice crystals are formed. These crystals possess high energy density, in the form of latent heat. Furthermore, the fact of being a slurry makes it an excellent energy carrier, for it can be easily pumped. The present work presents an experimental procedure to assess the heat transfer and the pressure loss, with pha
Publicado em: 2005
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7. Configurações ótimas para trocadores de calor a placas. / Optimal configurations for plate heat exchangers.
Este trabalho visa a utilização de técnicas de otimização para a determinação da melhor configuração para trocadores de calor a placas. A configuração de um trocador a placas define a distribuição das correntes quente e fria ao longo dos seus canais e ela é definida pelo seu número de canais, pelos números de passes em cada lado e pelas local
Publicado em: 2003
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8. A screening method for the optimal selection of plate heat exchanger configurations
An optimization method for determining the best configuration(s) of gasketed plate heat exchangers is presented. The objective is to select the configuration(s) with the minimum heat transfer area that still satisfies constraints on the number of channels, the pressure drop of both fluids, the channel flow velocities and the exchanger thermal effectiveness.
Brazilian Journal of Chemical Engineering. Publicado em: 2002-12
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9. Modelagem matematica e simulação dinamica de trocadores de calor de placas para o resfriamento de sucos de laranja natural e concentrado
The plate heat exchangers are widely used in the food industry for many processes that involve thermal treatments such as pasteurization, sterilization, cooling and heating of fluids. The prediction of the outlet fluid temperature transient behavior as a function of the of the operational conditions for a thermal treatment in heat exchangers, has fundamental
Publicado em: 2000
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10. Estudo da dispersão de depositos incrustantes obtidos em pasteurizadores de leite por detergentes acidos e alcalinos : influencia do PH, tempo e temperatura de reação
This study examined in vitro the action of alkaline and acid detergents on soil deposited in the heating section of plate heat exchangers during milk pasteurization. The influence of the physico-chemical parameters, such as pH and temperature, as well as reaction time on the deposits dispersion was verified. The soil deposits used in the experiments were obt
Publicado em: 1992
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11. Assessment of Microbial Fouling in an Ocean Thermal Energy Conversion Experiment
A project to investigate biofouling, under conditions relevant to ocean thermal energy conversion heat exchangers, was conducted during July through September 1977 at a site about 13 km north of St. Croix (U.S. Virgin Islands). Seawater was drawn from a depth of 20 m, within the surface mixed layer, through aluminum pipes (2.6 m long, 2.5-cm internal diamete