柞木干燥预热时间的影响因素探讨  

Factors Affecting Preheating Time of Oak Lumber before Drying

作　　者：吕蕾[1,2] 时兰翠[1,2] 黄海兵[1,2] 高大宏 由昌久[1,2] 杨亮庆 

机构地区：[1]黑龙江省木材科学研究所 [2]国家林业局制材实验室,黑龙江哈尔滨150081

出　　处：《木材工业》2013年第3期51-53,共3页China Wood Industry

基　　金：黑龙江省财政厅自拟项目"节能预处理与木材干燥相关性的研究"(201008)

摘　　要：为降低木材干燥消耗的能量,优化柞木干燥预热工艺,探讨了试样厚度、初含水率及干燥介质温度,对试样预热时间的影响。结果表明:试样越厚,预热时间越长,但试样厚度与预热时间不呈线性关系;介质温度越高,预热时间越短;含水率对预热时间无明显影响。建议柞木干燥预热介质温度≤70℃,若木材初含水率低于纤维饱和点,可适当延长预热时间,以保证干燥质量。To reduce the energy consumption of wood drying and optimize drying process for oak （Quercus mongolica）, the authors studied the effect of specimen thickness, initial moisture content and ambient temperature on preheating time. The results indicated that preheating time increased with specimen thickness in a non-linear relationship. Preheating time decreased with increasing ambient temperature. The initial moisture of the sample was found to have no obvious impact on preheating time. They suggested that the suitable preheat ambient temperature is around 70 ℃; preheating time could be appropriately prolonged when the initial moisture content of oak lumber is below fibre saturation point.

关 键 词：柞木 干燥 预热时间 厚度 初含水率 介质温度 

分 类 号：TS652[轻工技术与工程]