Drying Characteristics of Wood under Vacuum-superheated Steam

编号 zgly0000341410

文献类型 期刊论文

文献题名 Drying Characteristics of Wood under Vacuum-superheated Steam

学科分类 220.5540;木材学

作者 YiSonglin  ZhangBiguang  ChangJianmin  DuChaogang 

作者单位 CollegeofMaterialSciencesandTechnology  BeijingForestryUniversity  Beijing100083  P.R.China 

母体文献 中国林学: 英文版 

年卷期 2004,6(2)

页码 41-45

年份 2004 

分类号 S781.71 

关键词 真空  过热蒸汽  木材  干燥  转化温度 

文摘内容 This paper presents comparison and analysis of thermal-dynamic characteristics of air-drying and superheated steam drying under vacuum. The result reveals that for both convective heat transfer coefficient and resistance of mass transfer on the surface, superheated steam drying under vacuum is superior to air-drying under the same condition. With Masson pine as specimen,we found that the inversion temperature really exists through comparable experiments of air-drying and superheated steam drying under vacuum. When temperature is above inversion point of temperature, drying speed is faster than that of air-drying; however, if temperature is below the point, the result is opposite. The inversion temperature of experiment ranges from 80 to 85 ℃。