文献类型：期刊文献

英文题名：Studies on pre-treatment by compression for wood drying I: effects of compression ratio, compression direction and compression speed on the reduction of moisture content in wood

作者：Zhao, Youke[1] Wang, Zhihui[1] Iida, Ikuho[2] Huang, Rongfeng[1] Lu, Jianxiong[1] Jiang, Jinghui[1]

第一作者：赵有科

通信作者：Jiang, JH[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Kyoto Prefectural Univ, Lab Wood Technol, Sakyo Ku, Kyoto 6068522, Japan

年份：2015

卷号：61

期号：2

起止页码：113-119

外文期刊名：JOURNAL OF WOOD SCIENCE

收录：;EI(收录号：20150400453798);Scopus(收录号：2-s2.0-84939991678);WOS:【SCI-EXPANDED(收录号:WOS:000352237200002)】；

基金：This work was funded by the 948 Project (2011-4-19).

语种：英文

外文关键词：Pre-treatment; Compression; Wood drying; Moisture content

摘要：To remarkably reduce the moisture content (MC) in a short time, pre-treatment by compression for wood drying was systematically studied in terms of effects of compression ratio, compression direction and compression speed on the reduction of MC in Poplar and Chinese fir. The results showed (1) MC reduction was about 108 and 176 % after compression at a ratio of 60 % from water-saturated condition, and it was about 1.8 and 3.0 % every 1 % compression ratio for Poplar and Chinese fir, respectively. (2) Compressions in tangential, radial and 45A degrees direction were very effective in MC reduction, suggesting that pre-treatment by compression is very effective on round wood and timbers of flat grain, vertical grain and in-between vertical and flat grain. Of all the compression directions, the tangential compression showed a maximum MC reduction. (3) For Poplar, when the compression speed was 0.5, 1 and 3 mm/min, MC reduction had no big change; while it became small when the compression speed was 5 and 10 mm/min. For Chinese fir, reduction of MC decreased with the increase in compression speed. After all, the pre-treatment by compression is very effective to reduce the MC for wood drying.