MEASURED GAS VELOCITY AND MOISTURE CONTENT DISTRIBUTION IN A CONVECTIVE VACUUM KILN
作者:
S. F. Ledig,
K.-E. Militzer,
期刊:
Drying Technology
(Taylor Available online 2000)
卷期:
Volume 18,
issue 8
页码: 1817-1832
ISSN:0737-3937
年代: 2000
DOI:10.1080/07373930008917812
出版商: Taylor & Francis Group
关键词: wood dryer;gas flow;velocity profile;fluid dynamics
数据来源: Taylor
摘要:
Transferring the necessary heat of evaporation to the stack is the bottleneck in convective vacuum drying of wood. Higher gas velocities are applied to compensate for the lower gas density and to obtain similar heat and mass transfer characteristics as under normal pressure. Like in conventional kiln drying the region with the most unfavorable drying conditions determines drying time and product quality. To use the full potential of the meanwhile established superheated steam vacuum drying technology, it is therefore necessary to work on an improved uniformity of process conditions in the kiln.
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