Abstract
A modified diffusion-based mathematical model is proposed to describe the moisture movement during continuous and intermittent drying of Eucalyptus saligna. This model includes the temperature change, the surface drying coefficient (β n ) and 2 diffusion coefficients [from green to FSP (D f ) and from FSP to dry condition (D o )] as important parameters. The final model expression obtained was M = exp (− 25 β n 2 D t /l2) with the β n used was 1.5807 kg m−2 s−1, the D f was 2.26 × 10−11 m2 s−1, and the D o was 5.85 × 10−12 m2 s−1. The range of temperature change between heating and non-heating phases in the intermittent drying regimes was from 24.9 to 31.8 °C. The R2 values obtained when the model was fitted into the drying data of different intermittent regimes ranged from 71.5 to 85.9%. The R2 value was 87.4% when the model was fitted into continuous trial data. The high values of R2 indicate that the model can be used to understand the moisture reduction both in intermittent and continuous regimes.
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Yuniarti, K., Brodie, G., Ozarska, B. et al. A mathematical model for moisture movement during continous and intermittent drying of Eucalyptus saligna. Eur. J. Wood Prod. 76, 1165–1172 (2018). https://doi.org/10.1007/s00107-018-1296-x
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DOI: https://doi.org/10.1007/s00107-018-1296-x