REGULAR REGIME ANALYSIS AND MOISTURE DIFFUSIVITY IN WOOD |
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| Authors: | T. Liu W. J. coumans |
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| Affiliation: | 1. Department of Building Materials, Royal Institute of Technology , Stockholm , S-100 44 , Sweden;2. Department of Chemical Engineering, Eindoheven University of Technology , Eindhoven , 5600 MB , the Netherlands |
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| Abstract: | ABSTRACT The Regular Regime analysis, introduced by Schoeber in 1976, enables the determination of concentration dependent diffusivities from a single desorption experiment. A study on theoretical and practical aspects of this analysis is presented here. The theoretical background of the method is treated. Efforts have been made to simplify the calculation procedures by compacting and clarifying some complicated relationships. The calculation has become simple, straightforward and easy to use in practice. A stepwise procedure is given. The Regular Regime analysis has been applied to wood specimens (Norway spruce). The moisture diffusivities are compared with those obtained from a Stationary Flux method. The observed differences are discussed. Also attention is paid to some problems in the application of the Regular Regime analysis. |
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| Keywords: | drying sorption desorption regular regime diffusion diffusivity drying curve wood |
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