how much heat flux is too much ? is there such a thing as too much? im using 26 gauge kanthal a1 , quad coils at .15 ohms and the heat flux is around 278K.
heat flux
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Your comments don't provide a useful frame of reference, Asquad. The coil gauge, quad parallel build and net resistance I understand... but what formula or program are you using to arrive at a value of "278K"?
Using Steam Engine, Heat flux, or radiant heat, is expressed in mW/mm², or milliwatts per millimeter squared. I doubt you mean Kilowatts or Kelvin... so what does 'K' represent?
Running your numbers, and guessing that you're pushing around 75 watts... if you mean 278 mW/mm², then I'd say it's an "average" temperature. I tend to run in the mid 200s to mid 300 mW/mm² with a rda - a bit less with an rta.
Come to think of it... I spend a good amount of time outdoors, and in the winter, I may run a bit warmer than I might in the heat of summer. Just a theory. ;-)
Using Steam Engine, Heat flux, or radiant heat, is expressed in mW/mm², or milliwatts per millimeter squared. I doubt you mean Kilowatts or Kelvin... so what does 'K' represent?
Running your numbers, and guessing that you're pushing around 75 watts... if you mean 278 mW/mm², then I'd say it's an "average" temperature. I tend to run in the mid 200s to mid 300 mW/mm² with a rda - a bit less with an rta.
Come to think of it... I spend a good amount of time outdoors, and in the winter, I may run a bit warmer than I might in the heat of summer. Just a theory. ;-)
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Depends on how warm of vape you like. Get a Doge RDA and you wont be able to even feel the heat because its so airy. I have a dual 0.2 ohm build in mine with 24g kanthal, set to 80 watts on the Segelie 100W. The heat flux on that according to Steam Engine is 520mW/mm² and it isnt even warm at all.
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i was using k for thousand. Im using the steam calculator in imperial . forgot to mention that.
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Not a problem. Had you included the milliwatt per (what ever) value rather than just the 'K'... I might have figured it out. ;-)
Interestingly enough, in nearly a year since SE has been available, you're the first vapist I've encountered using the inch version of SE, where heat flux is a substantially larger number... milliwatt per square inch, rather than square millimeter.
Yes, your 278454 mW/in², which equals 432 mW/mm²... is a bit on the warm side, but normal for the build, resistance and Ohm's law calculation of 117 watts discharge.
I don't know if it's too hot for you, or what you're trying to accomplish, but...
For the same net resistance, you can drop the HF considerably (196649 mW/in / 305 mW/mm²) by using 25 gauge... although the HC goes up a bit.
If you increase the net resistance to 0.17Ω (using your 26 gauge), the battery discharge drops to 103 watts, heat flux to 218395 mW/in² ( 339 mW/mm²), and HC to a slightly slower value of 25.4 mJ K-1 than your original build of 22.4 mJ K-1.
Bouncing back and forth between versions... has given me a headache.
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STATE - I use both Imperial and metric. I tend to enter data based on the inch, then build and read the results based on the metric numbers. I have to think about the math when working in metric, while for me fractions of an inch are intuitive for me. In that I can see in my mind .25 or 1/4 inches even down to thousands of an inch I'm OK. I have issues with imagining/seeing the size of metric units.
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