Vapor ohms/volt/watts charts How do they come up with them.

[Shootist]

Ok I've seen a few of these charts that give a recommend voltage and corresponding wattage for a give resistance but I'm wondering how they come up with them.

Is there documentation on the e-liquid ingredients for boiling points and burning points.

I'm not suggesting these charts are wrong. In fact I think they hit the mark, as far as I'm concerned. Just wondering how they come up with them.

I vape at that 8 to 10 watt range and mostly more in the 7.5 to 8.5 range. For me it is just a more enjoyable vape.

 

[rurwin]

Kangertech recommend 3.3V for 1.8 ohms and 3.7V for 2.4 ohms.

That's about 6W, which I find is a good place to be with Protanks and EVODs.

But I'm vaping at 20W at the moment. The difference being that it's on a Fogger V4 with a dual coil and more efficient wicking. If I was to swap it out for the Russian, I'd drop the power well below 10W. The liquid is thick, there's only a single coil and it's not working great.

To a certain extent liquids taste different at different powers. But there is a far larger effect from wicking efficiency and coil surface-area.

 

[steved5600]

They start with ohms law then they come up with suggested zones of vaping. But they are only suggested and very general. Most of the time I run between 6 and 9 watts per coil. I said per coil as i do have mostly dual coil attys. Here is some useful stuff for you.

View attachment coilsv2.pdfView attachment ecig calculators.xlsx

The first is the best explanation of ohms laws I have found. Second coil explinations and last some useful tools i put into a spread sheet.

 

[K_Tech]

I could be mistaken, but I believe that I read that those charts were developed with cartomizers in mind, and while they still apply (for the most part) to "factory" built coils, once you get into things like rebuildables or some of the newer dual-coil tanks (Nautilus Aspire, for example) they don't really fit well.

And in my opinion, there are so many variables out there nowadays, it would be a Herculean task to try and come up with a chart/spreadsheet/whatever that would cover all the bases.

That being said, I think the chart is still a decent way to find a starting point, but it's not a hard and fast set of vaping parameters that we all HAVE to follow for a good vape.

And to answer your other question, I have not seen any documentation on the boiling/burning points of PG/VG outside of a Google search.

 

[Tom Fuller]

The charts are based on a boiling point and a charring point where carbon gets created. Thermal dynamics are far more relevant as the volume and speed of incoming air can be adjusted with how hard you inhale. Kinda like lightly blowing a candle so that the flame is barely hanging on to the wick. The small fire fighting for its life is not producing near the heat it could with less air flow. The difference is our coils EVAPORATE e liquids. So the three parts are heat air and fluid. If all are balanced good vapor is produced. If your coil is or voltage is set too low for your inhale speed you will burn or not produce vapor.


Live Long and Vape!

 

[Tom Fuller]

MSDS material safety data sheet on PG states 219F as the flash point. Full boil over 300F. That's of the Dow Chemical MSDS


Live Long and Vape!

 

[tj99959]

The charts use to be fairly accurate because most everything was basically the same. Now there would need to be a different chart for every topper out there because of the different thermal dynamics of the toppers.