烟草及烟叶的热物性分析

The values of the thermophysical properties of tobacco and other cigarette
components are important input parameters for cigarette combustion models
[1-7]
and
tobacco process design and characterization. Knowledge of these values is also
essential to the development of cigarette prototypes with modified burning
characteristics. Heat capacity, thermal diffusivity and thermal conductivity are key
parameters. An understanding of these thermophysical properties for substrates in
contact with a burning cigarette is essential for understanding cigarette related fire
scenarios. Work in these areas has been reported by tobacco companies as well as
government agencies
[8-10]
. Data have been reported for the heat capacities
[5, 11-14]

and thermal diffusivities
[5, 14-16]
of tobacco but relatively little information exists
with regard to thermal conductivity[5]
.
In this paper we present the thermal conductivity and thermal effusivity values
determined for an extensive set of tobaccos as well as cigarette paper and filter tow.
The tobacco types include bright, burley, reconstituted sheet materials and blends.
The results are compared to both published and unpublished previously determined
smaller data sets. The available heat capacity data are reviewed. The results
suggest that most biomass materials behave similarly with regard to thermophysical
properties. TCi导热系数仪 超高温同步热分析