Study of drying of small diameter Larch lumbers with intermittent heating

作     者：郭明辉 赵西平 

作者机构：Key Laboratory Bio-based Material Science and Technology Northeast Forestry University 

出 版 物：《Journal of Harbin Institute of Technology(New Series)》 (哈尔滨工业大学学报（英文版）)

年 卷 期：2006年第13卷第4期

页      面：431-434页

核心收录：

学科分类：082902[工学-木材科学与技术] 08[工学] 0829[工学-林业工程] 

基　　金：Sponsored by Huo Yingdong Fund(Grant No.81022) Sponsored by the Science and Technology Project Foundation of Harbin City( Grant No.2004AFX XJ021) 

主　　题：small diameter lumber Larch intermittent heating drying curve drying quality 

摘      要：Intermittent heating for drying of small diameter Larch lumbers is investigated experimentally. The lumbers were dried using an experimental drying schedule. Moisture content (MC) of the lumber was continuously recorded and final drying defects were examined. The drying curves showed that the drying rate was a constant in the early stage of intermittent heating drying and decreased evidently when the MC was about 18% (intermittent 2h) and 20% (intermittent 6h). The drying quality reached the second (intermittent 2h) and first grade (intermittent 6h) of the Chinese National Standard. The visual drying defects, especially the check extent along grains were reduced with intermittent heating. When the intermittent time increased, the effect was more obvious.