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Open AccessArticle

Influence of Coil Power Ranges on the E-Liquid Consumption in Vaping Devices

1
Laboratoire Français du E-Liquide (LFEL), 218 Avenue du Haut Lévêque, 33600 Pessac, France
2
Université de Bordeaux, CNRS, I2M Bordeaux, Site ENSAM, Esplanade des Arts et Métiers, 33400 Talence, France
3
Bordeaux INP, CNRS, I2M Bordeaux, Site ENSAM, 16 Avenue Pey Berland, 33600 Pessac, France
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2018, 15(9), 1853; https://doi.org/10.3390/ijerph15091853
Received: 25 July 2018 / Revised: 20 August 2018 / Accepted: 21 August 2018 / Published: 28 August 2018
(This article belongs to the Special Issue Tobacco Harm Reduction)
As electronic cigarettes (e-cigarettes) represent a new constantly evolving product category, the systematic analysis of the developed devices and the e-liquid vaporization is challenging. Indeed, understanding how e-cigarettes work and the role of key parameters in the process are major issues. This work focuses on an experimental study of how the power supplied by the battery to the atomizer coil influences e-liquid consumption. The reproducibility and the repeatability of e-liquid consumption were investigated over 20 series of 20 puffs for one of the tested atomizers. Then, the reproducibility and the repeatability of the e-liquid consumption was investigated over five series of 20 puffs for each tested atomizer. The wire behavior according to the supplied power could be separated into three regimes: under-heating (insufficient power to generate an aerosol), optimal vaporization characterized by a linear trend (vaporization of the e-liquid proportional to the supplied energy) and over-heating (dry-burn occurs). Using a controllable and repeatable energy supply, the reproducibility of the quantity of vaporized e-liquid was verified for each of the five series of 20 puffs programed for all the atomizers except one. Finally, the influence of the supplied power on the vaporization and the consumption of the e-liquid as well as the optimal power ranges were investigated and discussed. The results showed that atomizers with resistance ranging from 1 Ω to 1.8 Ω are efficient using all the energy supplied by the battery to vaporize the e-liquid and reducing the energy lost in the cotton or in the metal part of atomizer coil. View Full-Text
Keywords: electronic cigarette; vaping devices; emission generation; standardization; atomizer; supplied power electronic cigarette; vaping devices; emission generation; standardization; atomizer; supplied power
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Soulet, S.; Duquesne, M.; Toutain, J.; Pairaud, C.; Lalo, H. Influence of Coil Power Ranges on the E-Liquid Consumption in Vaping Devices. Int. J. Environ. Res. Public Health 2018, 15, 1853.

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