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Cinética e modelação da secagem convectiva de papel obtido a partir de fibras de algodão

Authors: Teixeira, Rafael José Silva;

Cinética e modelação da secagem convectiva de papel obtido a partir de fibras de algodão

Abstract

No presente trabalho pretende-se caraterizar a cinética de secagem de papel obtido partir de fibra de algodão. A componente experimental é executada com recurso a uma estação de secagem, munida com equipamentos de controlo e de leitura. O objetivo é realizar a análise da cinética de secagem, com base nas condições impostas através dos parâmetros de entrada, temperatura a humidade relativa e velocidade do ar de secagem. Os resultados permitem determinar a influência dos parâmetros temperatura, humidade relativa, velocidade do escoamento e espessura do material sobre a cinética de secagem. Foi determinada a difusividade em cada ensaio e desenvolvido e validado um modelo matemático de secagem, com recurso aos valores obtidos experimentalmente. A modelação da secagem é realizada através de um modelo que recorre à segunda lei de Fick. São apresentados os resultados da modelação e respetivos desvio padrão relativamente aos valores experimentais.

The present work aims at, the determination of paper obtained from cotton fiber drying kinetics. The experimental component is performed using a drying station, equipped with control and reading equipment. The goal is to perform the drying kinetics analysis based on the conditions imposed by the input parameters, temperature, relative humidity and velocity of the drying fluid. The obtained results highlight the influence of the input. The paper diffusivity was determined for each test. A mathematical model of drying based upon Fick’s second law of diffusion was developed and validated with values obtained experimentally. The results of modeling and respective standard deviation from the experiment values are presented.

Mestrado em Engenharia Mecânica

Country
Portugal
Related Organizations
Keywords

Fibras vegetais, Engenharia mecânica, Algodão, papel de fibra de algodão, Fabrico de papel, cinética de secagem, Secagem forçada, modelo de difusivo de Fick

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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