Influence of drum inlet air conditions on drying process in a domestic tumble dryer. Issue 6 (26th April 2019)

• Record Type: Journal Article
• Authors: Novak, Lovrenc; Gatarić, Pero; Širok, Brane
• Is Part Of: Drying technology. Volume 37:Issue 6(2019)
• Page Start: 781
• Page End: 792
• Publication Date: 2019-04-26
• Subjects: Heat and mass transfer -- mathematical modeling -- vented tumble dryer -- isotherms -- textile drying; Drying -- Periodicals; Desiccation; 660.28426
• DOI: 10.1080/07373937.2018.1461111
• Languages: English
• ISSNs: 0737-3937

Abstract

Abstract: This study examines how the inlet air temperature, relative humidity, and flow rate influence the textile drying process in an open cycle tumble dryer. An experimental setup was prepared by connecting a domestic tumble dryer to an external system for controlled heating, humidification, and transport of air. Experiments were conducted by drying cotton textiles (8 kg dry mass) at different air inlet conditions. On the basis of measured data, correlations for determination of the total drying time, the moisture evaporation rate during the constant drying rate, and the area-mass transfer coefficient were developed. The process in the drum was modeled by using an established moisture evaporation model, based on sorption isotherms. A commonly used and a recently reported sorption isotherm for cotton were used with the model. Agreement between calculated and measured drying curves was better in case of the commonly used sorption isotherm, but final moisture content was better predicted by the recently reported sorption isotherm.