木材结合水扩散的非平衡态热力学研究

NON-EQUILIBRIUM STATE THERMODYNAMICS FOR DIFFUSION OF BOUND WATER IN WOOD

本文从非平衡热力学观点,推导了驱动力和通量的普遍表达式,并与Siau等所得到的结果作了比较,简单评述了关于木材中结合水扩散过程的研究,主要侧重于驱动力和通量讨论的进展。内容涉及木材水分输运中驱动力、化学势、蒸汽相的作用以及等温和非等温扩散模型。

From view of the non-equilibrium state thermodynamics, common expressions of driving force and flux were deduced and compared with the result deduced by Siau et al. The paper comments briefly on the study of diffusion process of bound water in wood and emphasises on the advantage of driving force and flux, which involves the action of driving force, chemical potential and vapour phase during transfering water in wood as well as the model of isothermal and non-isothermal diffusion.