Numerical Study on Heat Transfer and Release Characteristics of Key Components in Electrically Heated Tobacco Products

Table 3

Results of the fitted reaction kinetic parameters for the studied tobacco substrate.

Component	Pre-exponential factor A (1/s)	Activation energy E (kJ/mol)	Order n (−)	Maximum release rate (mg/mg)
Water 1	3.03 × 10^8	76.8	1	0.0950
Water 2	2.01 × 10^9	92.8	1	0.0154
Water 3	1.61 × 10^8	100.0	1	0.0020
Glycerol 1	1.27 × 10^2	49.8	1	0.0750
Glycerol 2	1.96 × 10^7	89.9	1	0.0878
Nicotine 1	3.19 × 10^7	81.5	1	0.0048
Nicotine 2	2.19 × 10^8	96.4	1	0.0065

Note. (1) “Water 1” denotes the first phase transition that promotes the release of water, and “Water 2” denotes the secondary phase transition. The naming principle for other numbered reactions is the same; (2) the maximum release rate = the maximum mass of component that can be released during the release process/the total mass of tobacco.