Experimental study of non-steady state moisture diffusional flow in wood

Experiments have been conducted to verify the suitability of Fick's second law to describe moisture flow in wood. The moisture content change with time were plotted for absorption and desorption, and it was observed that these variations follow the same trend as modelled on the computer. The mean integral diffusion coefficient D-bar for the wood species were calculated on the basis of Boltzmann's solution of Fick's second law, D-bar ranges from 2.0 x 10-3cm2/s to 4.2 x 10-3cm2/s for both absorption and desorption. (author). 5 refs, 4 figs, 2 tabs