Unsteady-state Water Vapor Adsorption in Wood: An Experimental Study
Keywords:
Water vapor, adsorption, sorption, measurements, evaluation, non-Fickian behavior, <i>Pinus silvestris</i>, <i>Picea abies</i>, <i>Fraxinus excelsior</i>, <i>Populus tremula</i>, <i>Prunus avium</i>, <i>Salix</i> spAbstract
This paper concerns transient sorption measurements in two intervals (54 to 75% and 75 to 84% relative humidity) made on samples of pine, spruce, ash, aspen, cherry, and willow, with the flow in different directions. In the lower interval, the sorption behavior is quite Fickian; but in the higher interval, it is largely governed by other processes—e.g., the slow sorption in the cell walls. Different simple methods of evaluating such non-Fickian sorption curves are proposed and tested.References
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