摘要
本文依据Ｔｉｅｍａｎｎ关于木材纤维饱和点的定义，应用热力学平衡相变理论，分析了木材中束缚水与水蒸汽的相变过程，由热力学系统相平衡的一般条件导出了木材纤维饱和点含水率的计算公式。文章计算了美国西加云杉纤维饱和点含水率，在２０～６０℃的温度范围内，计算结果与实验结果一致。
According to the definition of the fiber-saturation point made by Tiemann,the phase tran-sition between sorbed water and water vapor in wcod is studied here by means of the thermody-namical theories on phase transition in equilibrium. An equation of moisture content of wood atfiber-saturation point is derived form the conditions for phase transition in equilibrium. In thispaper,a calculation is carried out for the moisture content of sitka spruce specimen at fiber-satu-ration point and the calculated values are coincident with the experimental ones between 20℃and 60℃。
出处
《浙江师大学报（自然科学版）》
1995年第1期32-37,共6页
Journal of Zhejiang Normal University(Natoral Sciences)
关键词
纤维饱和点
含水率
相对蒸汽压
木材
fiber-saturation point:moisture content
relative vapor pressure
phase transition
