American Society of Agricultural and Biological Engineers



Click on “Download PDF” for the PDF version or on the title for the HTML version.


If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

Temperature, Density and Velocity Effects on Lint Moisture Transfer Rates

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  011141,  2001 ASAE Annual Meeting. (doi: 10.13031/2013.3740) @2001
Authors:   Gary L. Barker, J. Weldon Laird, Mathew G. Pelletier, Greg A. Holt
Keywords:   Cotton, drying, lint, temperature, moisture, quality, processing, ginning, modeling

Moisture control during the harvesting, storage, and processing phases of cotton production is essential for producing a quality product. The objective of this study was to quantify the effects of relative velocity, temperature and density on moisture transfer rates for cotton lint during the drying or moisture restoration process. The air velocity, passing over, through, and around the sample was varied from 118 to 825 cc/s (0.25 to 1.75 ft 3 /min). This provided relative velocities from 5 to 35 cm/s. The density of the cotton lint was varied from .005 to .03 g/cc. Two air temperatures, 40 and 80  C, were used in the study. As expected, air temperature and lint density had a pronounced effect on moisture transfer rates. Increasing the cotton lint density resulted in significantly reduced moisture transfer rates. A generalized equation consisting of temperature, relative velocity, and density was developed for predicting the coefficient D (containing diffusivity) for cotton lint exposed to the experimental conditions.

(Download PDF)    (Export to EndNotes)