Analysis of Drying Kinetics and Moisture Distribution in Convective Textile Fabric Drying

Abstract

The drying process of crude cotton fabric is analyzed under two main aspects: analysis of moisture distribution inside the textile sheet, and analysis of certain operational convective drying process variables. Experimental apparatus consisted of a drying chamber in which samples of pure cotton textile were suspended inside the drying chamber and exposed to a convective hot air flow. The influence of the operational variables on the drying process behavior was studied by two different ways with generalized drying curves. The behavior of moisture distribution profiles was compared to average moisture content of the textile fabric verifying whether average values were able to represent the textile moisture content during the drying process.

Análise Da Secagem Do Bagaço De Laranja Em Camada Fina Utilizando Modelos Semi-Teóricos E Empíricos

“…A curva de secagem apresenta basicamente dois períodos, um de taxa constante, no qual a superfície do material está com um nível elevado de umidade e outro de taxa decrescente de secagem, que pode ser divido em duas fases distintas, a depender do comportamento da taxa de secagem. Segundo SOUSA (2003), no primeiro período é sugerido como principal mecanismo de transporte, o escoamento capilar, a difusão de líquido e a difusão de vapor, enquanto que, no segundo período, a evaporação da umidade ocorre no interior do material e a difusão do vapor formado pode dominar os mecanismos de transporte de líquido. Assim, pode-se utilizar o modelo da difusão com a Segunda Lei de Fick (Crank, 1975), para descrever os dados de secagem e determinar o coeficiente de difusividade, conforme a Equação 4.…”

Exergetic performance assessment of a stenter system in a textile finishing mill

“…Over-drying may cause deterioration of product quality and wastage of energy (Sousa et al, 2006). The dried fabric at the outlet of the stenter had a moisture content of nearly 4%.…”

Analysis and modeling of drying behavior of knitted textile materials

“…From an industrial point of view, drying is an essential stage of many industrial processes and it is an energyintensive operation [2][3][4][5][6][7][8][9] . Alternatively, in addition to industrial drying, the natural drying characteristics of textiles during wear and after any activity resulted in sweating is of great importance, because this property is directly related to the comfort of clothing.…”