Summary:
The article discusses two new tobacco products: heated non combustible and vapor electronic cigarettes. The former produces nicotine aerosols by heating tobacco, while the latter atomizes the extracted nicotine oil through electric heating. The research focuses on the atomization process of steam type electronic cigarettes, including the effects of heating filaments, e-liquid, and oil guide cotton, as well as their heat transfer. The article points out that the adaptation and temperature control of tobacco oil and tobacco utensils are the key to atomization effect, and proposes two suggestions: first, develop a temperature testing platform for heating wires, and combine numerical simulation to analyze their thermal performance parameters; The second is to develop a flow testing platform for porous media, which can study fluid flow characteristics through in-situ observation and numerical simulation.
New types of tobacco are divided into heated non combustible e-cigarettes and steam e-cigarettes. Heating non combustible e-cigarettes are aerosols containing nicotine produced by heating tobacco flakes to 200-300 ℃. Steam type e-cigarettes are made by extracting nicotine from tobacco leaves into e-liquid, which is then heated by electric energy to atomize the e-liquid and produce aerosols containing nicotine.
This article mainly focuses on the atomization process of steam type electronic cigarettes, exploring the main factors affecting the atomization process from the aspects of heating wire, cigarette oil, oil guide cotton, and heat transfer path during the atomization process.
The adaptation of e-liquid and e-liquid is the key to achieving atomization effect, and the key parameter that connects e-liquid and e-liquid is "temperature". Therefore, two suggestions are proposed on how to use temperature to connect heating filaments, porous media, and e-liquid:
(1) For the heating wire, develop a temperature testing platform to find parameters related to the temperature rise and distribution of the heating wire, such as the thermal conductivity, density, specific heat, and structural parameters of the heating wire material. At the same time, numerical simulation methods can be combined for comparative analysis.
(2) For porous media, develop a flow testing platform to test their pore size, porosity, and permeability. And the characteristics of fluid flow inside can be studied through a combination of in-situ observation and numerical simulation.