文献类型：期刊文献

英文题名：Mathematical model of heat and moisture transfer in alder birch wood during the thermo-vacuum treatment and its application in the quantitative control of the wood color

作者：Yang, Yan[1,2] Lu, Jianxiong[1] Dong, Chunlei[2] Zhan, Tianyi[1] Jiang, Jinghui[1] Luo, Bei[2]

第一作者：Yang, Yan

通信作者：Lu, JX[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]South West Forestry Univ, Coll Mat Engn, Kunming, Yunnan, Peoples R China

年份：2016

卷号：34

期号：13

起止页码：1567-1582

外文期刊名：DRYING TECHNOLOGY

收录：;EI(收录号：20164002860437);Scopus(收录号：2-s2.0-84988714303);WOS:【SCI-EXPANDED(收录号:WOS:000385564200004)】；

基金：This work was financially supported by project of National Key Technology Research and Development Program (No. 2012BAD24B02) and Yunnan Provincial Education Department Project (Project No. 2015Y293).

语种：英文

外文关键词：Alder birch wood (Betula alnoides); experimental validation; heat and moisture transfer; lightness difference; mathematical model; thermo-vacuum treatment; total color difference

摘要：High-temperature heat treatment (HTHT) is an effective method for improving the wood dimensional stability and biological durability at present. However, the quantitative control of the wood color during the HTHT has been a more difficult problem for a long time. To solve the problem of quantitative control of wood color under the thermo-vacuum treatment (TVT) process, the mathematical model of heat and moisture transfer in alder birch wood (Betula alnoides) during the TVT process was built, and its application in the quantitative control of the wood color was also studied. (1) The experimental values and the model values of heat and moisture transfer in wood were found to be in good agreement. (2) The changes of wood temperature and moisture content (MC) were influenced obviously by the heat treatment temperature, the initial MC, and the thickness of specimen as well. The higher the heat treatment temperature was, the more rapid was the rise in the wood temperature and the drop in MC. The higher the initial MC of the wood was and the thicker the wood got, the slower the rise in wood temperature and the drop in MC. (3) Based on the mathematical model of heat and moisture transfer during the TVT process and the wood color index difference regression equations in the function of the temperature and time, the quantitative control of alder birch wood color during the TVT process was achieved. Therefore, it is feasible that heat and mass transfer principle applied during the TVT process guided the wood color quantitative control.