Improvements of equilibrium moisture content models for cotton.
1994
Abernathy G.H. | Hughs S.E. | Gillum M.N.
Data from Griffin (1974) and that of Urquhart and Williams (1924) were used to evaluate available equilibrium moisture content models at normal temperature and at elevated temperatures (up to 90 degrees C). Models evaluated included the Henderson and Perry (1976), a simple cubic polynomial, and the BET [Brunauer, Emmett, and Teller (1938) as modified by Dent (1977)]. All three models were evaluated for lint equilibrium moisture content at normal temperature. The BET model gave the best fit, but the simpler models gave satisfactory results for engineering calculations. Only the BET model gave adequate fit for variable temperature applications. Equilibrium moisture content is important in the processes involved in lint spinning. A reasonable amount of data is available on moisture absorption, but there is a lack of data on the desorption process. Since drying lint in seed cotton samples is a desorption process, a set of equations were devised to convert from one process to the other by a simple calculation.
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