Determination of optimum operating conditions and simulation of drying in a textile drying process

Akyol, Uğur; Kahveci, Kamil; Cihan, Ahmet

doi:10.1080/00405000.2012.707900

Cited by 26 publications

(18 citation statements)

References 12 publications

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“…[i.e. [40][41][42][43][44][45][46][47][48][49][50][51] Application of thin layer drying models to textile drying has only appeared in the studies of Akyol et al [52,53] where the drying behaviour of viscose and wool yarns was investigated, respectively. Thus, to the best of the authors' knowledge, thin layer drying modelling of textile materials in fabric form has been carried out for the first time in this study.…”

Section: Modelling Of Drying Curves At Standard Atmospheric Conditionsmentioning

confidence: 99%

Analysis and modeling of drying behavior of knitted textile materials

2016

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Drying properties of textiles in summer and/or after any kind of physical activity resulted in sweating is of great importance for garments with high clothing comfort. This study analyses the drying behaviour of knitted fabrics produced from various fibres at different ambient air conditions. Drying kinetics and modelling of fabrics dried in standard environmental conditions were investigated in the first part. Polyester and lyocell fabrics were found to be the fasted dried samples. A two-stage modelling that is a combination of linear approach and thin-layer equations were used, and the best fitted equation was found to be the logarithmic one. The two-stage model was also proved to predict the drying rate. The second part included the effects of ambient humidity on drying times and rates. Drying time of polyester and polyester blended fabrics was affected by the increase in the humidity to a great extent. Furthermore a quadratic function was found to be highly correlated with the computed data so it was proposed to define the drying behaviour by ambient air humidity and drying time.

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Section: Modelling Of Drying Curves At Standard Atmospheric Conditionsmentioning

confidence: 99%

Analysis and modeling of drying behavior of knitted textile materials

2016

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“…One of the most commonly used types of thermal dryers is convection dryer. 1,2,6,7 Basically, a convection dryer delivers heated air to the surface of the material and facilitates the removal of moisture.…”

Section: Introductionmentioning

confidence: 99%

Drying kinetics of cotton based yarn bobbins in a pressurized hot-air convective dryer

Akal

Kahveci

Akyol

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part E:

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In this study, the drying kinetics of cotton bobbin drying process in a pressurized hot-air convective bobbin dryer was investigated, and a drying model was introduced for the simulation of drying. Tests were conducted for drying temperatures of 70 C, 80 C, and 90 C; effective drying air pressures of 1, 2, and 3 bars; three volumetric flow rates of 42.5, 55, and 67.5 m 3 /h; and for three different bobbin diameters of 10, 14, and 18 cm. Optimum drying conditions were specified in terms of drying time and energy consumption. Results indicate that the total drying time depends significantly on the drying temperature, pressure, and volumetric flow rate. Results show that the minimum energy consumption is obtained for low values of drying air temperatures and pressures, and for moderate and high values of drying air volumetric flow rates. It was also found that the Page model is suitable for simulating the drying behavior of cotton yarn bobbins. Finally, results show that effective diffusion coefficient values are between 1.132 Â 10 À7 m 2 /s and 3.453Â10 À7 m 2 /s depending on the values of drying parameters.

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“…Sufficient temperature is a prerequisite for evaporation of water under normal atmospheric pressure conditions. [4] In this stage, energy is mainly used for heating the fabric by conduction and convection instead of evaporation of water, and the moisture content of fabric remains almost constant. During this stage, the migration of moisture mainly depends on the mechanical rotation of the drum instead of convection, and thus migrated moisture is free moisture attached mechanically on the fabric surface and yarns surface.…”

Section: Strategy For Reducing Dryer Energy Consumption and Improvingmentioning

confidence: 99%

“…[1] , [2] However, fabric drying is an energy-intensive operation. [1] , [3] , [4] Domestic clothes dryers are responsible for up to 10% of the total residential energy consumption in developed countries. [5] Current dryers are also very inefficient, nearly 60% of the total energy consumed by currently available dryers is wasted.…”

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confidence: 99%

Enhancing the Energy Efficiency of Domestic Dryer by Drying Process Optimization

et al. 2017

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The domestic tumble dryers are becoming indispensable household appliances and responsible for up to 10% of the total residential energy use in developed countries. However, their energy efficiency is low. In this paper, the development of a multi-sensor computer-controlled prototype platform for fabric drying is described for improving the efficiency of dryers. The prototype platform enables the real-time control and recording of key drying parameters including heater power, air flow velocity, rotating speed of drying drum and drying cycle time. These parameters are automatically adjusted according to the exhaust air humidity instead of the temperature which is used traditionally. Additionally, a new drying model of dividing the drying process into 4 stages based on the humidity of the exhaust air has been investigated in order to further increase the energy saving. The performance of this staged drying model is experimentally evaluated in respect to energy consumption, drying time, and the smoothness of fabric after drying. The results clearly indicate that the staged controlling of heating power input not only decreases energy consumption by 21.5% but also improves the fabric smoothness by 0.9 grade compared to using a single heating power input for the whole drying process. The research outcome can enable the design and production of new dryers that are more energy efficient and lead to dried clothes that require less ironing, which in turn further reduces energy consumption.

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Determination of optimum operating conditions and simulation of drying in a textile drying process

Cited by 26 publications

References 12 publications

Analysis and modeling of drying behavior of knitted textile materials

Analysis and modeling of drying behavior of knitted textile materials

Drying kinetics of cotton based yarn bobbins in a pressurized hot-air convective dryer

Enhancing the Energy Efficiency of Domestic Dryer by Drying Process Optimization

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