Air Conditioning Storage
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. MATHEMATICAL MODELLING AND IMMEDIATE AND LATENT QUALITY OF NATURAL IMMATURE COFFEE UNDER DIFFERENT DRYING CONDITIONS
ABSTRACT This work aimed to study the immediate and latent effects of different relative humidities on the quality of dried coffee fruits, describe the drying kinetics of natural immature coffee (Coffea arabica L.), and evaluate the mathematical model that best fits the experimental drying data. The drying was carried out in a fixed layer dryer coupled to a
Eng. Agríc.. Publicado em: 04/11/2019
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2. PrÃ-tratamento de uvas cv. Thompson Seedless cultivadas no Vale do SÃo Francisco com altas concentraÃÃes de CO2
Fungi that cause postharvest decay cause damage in grape-producing regions in the world, including the SÃo Francisco Valley, Northeast Brazil. To circumvent this problem in the tables grapes for the trade export, are treated with sachets of SO2 placed inside the package, whose effects on the quality of the grapes are discussed. One of the alternatives studi
Publicado em: 2009
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3. Estudo de variaveis que atuam no processo de cimentação de restaurações ceramicas : atenuação da luz, modos de ativação e tratamento superficial / Study of variables that act in the luting process of ceramic restorations : light attenuation, activation mode, and surface treatment
The durability of ceramic restoration depends of factors like the conversion degree of a luting agent and the interaction of this luting agent with the ceramic internal surface. These in vitro studies evaluate: (1) the influence of different ceramics and the effect of different activation modes on Knoop Hardness Number (KHN) of a dual agent luting, immediate
Publicado em: 2008
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4. Estudo da influência da camada limite hidrodinâmica no desempenho de um tanque vertical de termoacumulação de água gelada durante o ciclo de descarga. / Study of the hydrodynamic boundary layer in the performance of a vertical cold water thermal storage tank during the discharging cycle.
Quando água quente é introduzida em um tanque de termoacumulação vertical, durante o ciclo de descarga, ocorre uma mistura parcial dessa água com a água fria armazenada. A intensidade dessa mistura depende de parâmetros geométricos do difusor de entrada e da dinâmica do escoamento no início do processo. Inúmeros estudos têm sido desenvolvidos no
Publicado em: 2008
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5. Effectiveness-ntu computation with a mathematical model for cross-flow heat exchangers
Due to the wide range of design possibilities, simple manufactured, low maintenance and low cost, cross-flow heat exchangers are extensively used in the petroleum, petrochemical, air conditioning, food storage, and others industries. In this paper a mathematical model for cross-flow heat exchangers with complex flow arrangements for determining epsilon -NTU
Brazilian Journal of Chemical Engineering. Publicado em: 2007-12
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6. Numerical analysis of water melting and solidification in the interior of tubes
Latent energy storage systems find applications in many engineering fields, including industrial refrigeration plants, air conditioning installations, recovery of heat in industrial processes, etc. To tackle the design of such systems, it is necessary to have correlations to account for the heat transfer during the melting and solidification of the phase cha
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-06
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7. Implementação de uma bancada de ensaios para analise de estrategias de controle de sistemas de refrigeração e ar condicionado / Conditioned air system control analysis with termical storage in a ice storage
In this work is realized a control analysis ofthe expansion valve and the rotacional speed of the compressor engine for an air conditioning system with thermal storage in an ice storage tank. The thermal project, electronical project, computer programming and control technics are integrated to increase the performance of the system. To implement the proposed
Publicado em: 2004
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8. ESTUDO EXPERIMENTAL DO SUPER-RESFRIAMENTO DA ÁGUA EM CÁPSULAS CILÍNDRICAS / EXPERIMENTAL STUDY OF SUPERCOOLING WATER IN CYLINDRICAL CAPSULES APPLIED TO THE THERMAL STORAGE
Um dispositivo experimental foi desenvolvido para o estudo do super-resfriamento da água em cápsulas cilíndricas visando sua utilização em processos de termo-acumulação. A bancada experimental é constituída basicamente por: seção de teste, sistema de resfriamento, sistema de visualização e sistema de aquisição e armazenamento de dados. A tempe
Publicado em: 2004