Is the heatflux correct for twisted wire?

[astronomicals]

Build= dual braided 30AWG, 0.8ohms, 10/9 wrap, 2.4mm

Steam engine says that @17 watts my heat flux is 47 mw/mm, however, it vapes well. It says it would be 187 mw/mm if it were a non braided 0.8 ohm dual coil of 30awg. I get fairly dense clouds at 17 watts. Warm vape. If I bump it up to around 55 watts it says i'll have a heat flux of 153mw/mm. I get much denser clouds at that power, but, I need to take quick, fast, hard draws. Im wondering why it even works at 47 mw/mm.

What am I missing here?

 

[Katmar]

Bump for an answer

 

[State O' Flux]

Build= dual braided 30AWG, 0.8ohms, 10/9 wrap, 2.4mm

Steam engine says that @17 watts my heat flux is 47 mw/mm, however, it vapes well. It says it would be 187 mw/mm if it were a non braided 0.8 ohm dual coil of 30awg. I get fairly dense clouds at 17 watts. Warm vape. If I bump it up to around 55 watts it says i'll have a heat flux of 153mw/mm. I get much denser clouds at that power, but, I need to take quick, fast, hard draws. Im wondering why it even works at 47 mw/mm.

What am I missing here?

What you may have done is set it at "dual coil" for the build "set-up"... where the program believes you have two parallel coils, each made of two strands of wire. Reduce the build to a single coil and it will adjust heat flux to 189 mW/mm2.

Read my Steam Engine User guide (link below) if you've not already done so... might clarify this feature, and if not, then I'll need to edit it a bit and point this particular aspect of the multi-strand option out.

Gotta' Go! Cheers

 

[astronomicals]

Sorry. I should have been more specific. It is dual coil. Each is two braided wires. Fires at 47mw/mm. Its much thicker at 55 watts, but I didnt think Id get it to fire at 17 watts. Is that just typically a much cooler and thinner vape than desired [hence the "blue zone"]?

This is the build
https://www.dropbox.com/s/7bmqbsca01crs5s/dualtwist30.JPG?dl=0

 

[93gc40]

What you have to remember is that the BLUE zone is HOT for some atty's. Kind normal for the heat to go up as you increase the wattage. Also normal to need more airflow to vape on a hot coil. hence the hard fast draw, and increased vapor.

How are you Braiding 2 wires? usually requires at least 3 to braid.

 

[State O' Flux]

Sorry. I should have been more specific. It is dual coil. Each is two braided wires. Fires at 47mw/mm. Its much thicker at 55 watts, but I didnt think Id get it to fire at 17 watts. Is that just typically a much cooler and thinner vape than desired [hence the "blue zone"]?

This is the build
https://www.dropbox.com/s/7bmqbsca01crs5s/dualtwist30.JPG?dl=0

Yep... using your SE link, I get identical values, and a stone cold HF of 47mW/mm2. You'd need at least 60 watts to get into the approximate middle of the green zone @ 167 mW/mm2.

As an example of myself and others, I tend to build for the 230 to 345 mW/mm range, with the lower end for RTAs, the upper end for RDAs. Certainly not representative of any sort of average (I'll have to take a pole... when enough people actually use and understand heat flux)... just me and a few dozen people I know well enough to know their numbers. I know very few that run below 145 or above 400 mW/mm2.

 

[astronomicals]

Interesting. It certainly functions at 17watts. Clouds are fairly large (by some standard) at 55watts. I guess its just a matter of personal preference.

This tops out at 65watt 207mw/mm [on my device] due to voltage limitations and Ohms Law. That means my resistance must really be around 0.86. I could build a 0.6 ohm dual coil setup from the same twisted wire but id lose 27% of my surface area to enable me to use an additional ~30 watts. Id be able to drive at ~50% more power and lose ~27% surface area. Sounds like a fair trade off (thinking pot odds here). I guess if it wicks well enough it might not matter. That will be my next build. What do you think regarding this?

Personally, I kinda like firing really low in the blue zone. I have to drip less often and I can vape more without getting too much nic (@6mg). I also like that I can draw more slowly at that wattage. I definitely get more flavor at the higher wattages.

@93gc40-Its just two twisted wires. Nothing fancy. Just the typical drill twisting method.