Good to see in your video how the cooling is effective - and not effective at the long leg. This was an original (glass fiber) wick? Would be interesting to know if the disposables, operating only on wick and coil, are made of the same material and share the form factors (thickness of the individual fibers and of the fiber bundle). The latter should largely determine how effective the fibers are for wetting and capillary fluid transport. At the same time, properties must be chosen to avoid too fast fluid flow, leakage and drowning. Quite a tricky spot to be found.
Might be part of the reason that coils blow in the legs - those parts of the nichrome are not cooled by the juice.
The cooling is through the juice evaporating; very little is conducted away by the reservoir - if it was the coil would not work well.
Original wick; to the eye looks like a cermaic rod but the photos enlarged show it is indeed a bundle of fibreglass. In most traditional designs the 'wick' is not used as a wick, just a small temporary reservoir; but it works just right as a wick too, as shown in this experiment.
Too fast liquid flow in terms of the coil wick cannot occur, as I hace showed. So direct feed to the coil wick is the way to go; I am currently thinking through the possible ways ...
ps: one of the solder blobs was touching the plastic dish and melted it somewhat.
Not even any metal foam this time.
