Bull. Spec. CORESTA Congress, Lisbon, 2000, p. 204, STPOST1

A puff-by-puff delivery model for cigarettes

CHEN P.; DWYER R.W.
Philip Morris USA, R&D Operations Center, Richmond, VA, USA
Materials generated by combustion and heating in a lit cigarette move through the rod and filter sections in two phases, the particulate phase and the gas phase. The particulate phase includes liquid droplets. Some particles are removed while moving through the rod and filter sections. The gas phase materials include the vapor of many low-boiling compounds. While moving through the rod and filter sections, part of the vapor can be removed by adsorption and condensation. In this study, a puff-by-puff delivery model for cigarettes is developed to calculate tar, water, and nicotine left in the smoke on a puff-by-puff basis. The calculated results are compared with the experimental results of some cigarettes with different filter lengths. An analysis of the parameters used in the model calculation is performed.