How a petroleum-distillate powered pocket heater works. (naptha)

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Note that the recommended fuel for these is standard lighter fuel which is a fairly clean burning(ish) petroleum distillate. Keep in mind these fuels will burn without a wicking material, so be careful to avoid flames and hot surfaces when refilling.
I'd recommend against using heavier fuels like kerosene and definitely not an alcohol fuel as it tends not to stay in wicks as well as an oily fuel. I know this from the delightful experience of having my hand set on fire accidentally by the special effects department of a film I was acting in. I was holding a blazing torch which they had soaked in isopropanol to give a less smoky flame and the spirit just poured down the handle followed by the flame.
The Patreon Posse have also mentioned that this style of unit can cause a skin reaction due to the contact irritation of the fuel vapour if kept in a pocket close to skin for a long time.
If you know the science behind the vapour to heat catalytic conversion then please leave a comment about it below.
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