Theoretical analysis on thermal conductivity of cut tobacco under different processing states
The thermal conductivity of bulk cut tobacco are the fundamental data for analysis heat and mass transfer in various conditions of tobacco processing and calculation the device working parameters. At present, thermal conductivity of cut tobacco under different processing states were studied by direct measurement and empirical equation. In this work, the thermal conductivity of cut tobacco with different bulk densities and moisture content were measured by thermal transient plane source technique. Fourier heat transfer law with three-phase mixed system modified mathematical theory model were used for studying thermal conductivity of cut tobacco under different bulk densities and moisture content. The experimental results are as follows: (1) The micro heat transfer process of cut tobacco was theoretical analysis after considering the space structure parameters of accumulation. (2) The calculated thermal conductivity of cut tobacco through Fourier heat transfer law with three-phase mixed system modified mathematical theory model results agree well with the experimental values by transient plane source method, the correlation coefficient R=0.93.(3) The predicted results could satisfy fast and accurate calculation in tobacco processing conditions; it was important for analysis the heat transfer phenomena in cut tobacco processing conditions and providing fundamental thermal conductivity data.
transient plane source method thermal conductivity thermal resistance microthermal unit cell
Ying Han Dingrong Mou Wei Dong Ronggang Gong Yaming Yan Chaoxian Liu Duanfeng Lu Bin Li Yuehui Qiao
Technology Center,Hongta Tobacco（Group） Co., Ltd Yuxi 653100, Yunnan, China Key Laboratory of Tobacco Processing Technology, CNTC, Zhengzhou , China 450001 Technology Center,Zhejiang Tobacco Industrial Co., Ltd
国际会议
The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)
北京
英文
471-477
2010-10-19（万方平台首次上网日期，不代表论文的发表时间）