I ovde su nesto merili
Kayfun, Nicr80, 0.3mm, 11namotaja, oko 1.6 ohma
Suv grejac (bez vate):
"Temperatures generated on the “dry” coil, while applying 5 different wattages of 5 W, 10 W, 15 W, 20 W and 25 W, were 380 °C, 490 °C, 625 °C, 800 °C and 950 °C respectively"
"In this experimental setup the temperature generated on the heating coil was recorded over 5 consecutive puffs with the cotton wick imbued with the commercial e-liquids. The results show how, during the first three puffs the temperature measured on the coil surface does not significantly differ for 10 W, 15 W and 20 W, whereas the temperature measured at 5 W is distinctly lower. A possible explanation for this is that once the boiling temperature of the glycol/water mixture is reached (132 °C for Glycerol/water 88:12, 123 °C for Propylene glycol/water 85:15), the energy supplied by the battery is primarily consumed for the evaporation of the glycol and less for further heating up of the coil. The differences between temperatures measured in this set of tests and those measured on the “dry” heating coil appear to agree with this hypothesis. Values plotted on the y
-axis in do not correspond to the boiling temperatures of the glycols, as the thermo-camera recorded the temperature on the outer surface of the coil, and not the temperature of the liquid. Temperatures recorded during the fourth and fifth puff at 20 W are however significantly higher compared to those measured at 15 W. Effects occurring close to the heating coil, such as local liquid dry-out and local overheating, might be possible explanations for this.
Setting the battery output at 25 W resulted in ignition of the vapours. Data were therefore not collected. Ignition of the vapours in the fully assembled e-cigarette is however unlikely, as the availability of air is much lower. A second trend can be observed due to the general heating up of the entire device, and consequently the increasing baseline temperature before each puff, peak temperatures on the coil during the puff increase as well with each consecutive puff. This resulted in differences of approximately 50 °C at 5 W and 100 °C at 20 W between the first and the last puff. This effect might potentially have an impact on the formation of carbonyls, keeping also in mind that it might be more pronounced in the assembled device where heat-dissipation is considerably lower.
In conclusion, these results show the correlation between the relatively lower emissions of carbonyls at 5 W with coil temperatures below the boiling point of the glycol/water mixtures on the one hand, and, on the other hand, higher carbonyl emissions at higher coil temperatures which enhance glycol decomposition."http://www.sciencedirect.com/science/article/pii/S1438463916000158?via%3Dihub