木束高温干燥过程中的热质传递模型

描述了用杉木Cunninghamia lanceolata制造杉木积成材的原料单元——杉木木束的高温对流干燥热质传递模型。建立了模型以纤维饱和点为界的木束内部水分迁移和热量迁移的数学方程。通过杉木木束高温干燥实验对模型的准确性和可行性进行验证。结果表明：数学模拟结果和试验实际测定结果相吻合，木束温度实测值与模拟值之间的相关系数的平方为0．97～0．98，木束含水率的相关系数的平方为0．96～0．99。用该模型来模拟木束的高温干燥过程具有较高的精度。图1参9

A heat and mass transfer model for high temperature drying of Chinese fir wood stick

This objective is to determine the process parameters and control way in drying wood stick. A model for heat and mass transfer during high temperature convection drying of Chinese fir （ Cunninghamia lanceolata） wood stick was developed for use with Chinese fir oriented laminated stick lumber （CFOLSL）. From the model, an equation of internal moisture migration and heat transfer at the point of fiber saturation was created. Model authenticity and feasibility were validated through an experiment with Chinese fir wood stick. Results of measurements versus the simulation model for moisture content （RMC^2 =0. 96-0.99） and temperature （RT^2 =0. 97 -0. 98） showed strong agreement. The high-accuracy of the model used to analyze high temperature drying of wood stick could contribute to the theoretical basis for calculation of technical parameters as well as to a working solution for drying wood stick. Ch, 1 fig. 9 ref. ]