|| "Is True Mastery of the Elements But a Dream?" ||
|| "Is True Mastery of the Elements But a Dream?" ||
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Wiederstand ist Zwecklos!
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Co-Founder of Keepers of Light
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Laugh while you can, monkey-boy
|| "Is True Mastery of the Elements But a Dream?" ||
progger
Quote:
Originally posted by adamrice
I actually got this question via e-mail, but I thought I'd post my reply here to kick around:
Volume:Surface area is probably a factor, but I don't think that increased surface area necessarily reduces burn time (I am pretty sure that interleave wicks have more surface area than tube-core wicks, and they clearly burn longer), and I think there are other factors anyhow.
Quote:
Originally posted by adamrice
The critical factors are probably fuel capacity, the rate at which fuel moves to the surface (motility, or wicking action), and surface area. If you have high capacity but poor wicking action, you'll burn out before you run out of fuel. If you have good capacity and good wicking action, but the surface area is too small, then not enough fuel will ever be at the surface (after initial burn-off) to create a flame large enough to resist being extinguished by spinning before running out of fuel--effectively, this is the same problem as poor motility. If you have good wicking action and high surface area, all the fuel will move efficiently to the surface, create a large flame that exhausts all the fuel quickly.
My guess is that there is a "golden ratio" between the motility and surface area--so that there's not a magic number for either one, but as long as they're in the right proportion, you'll get a complete burn.
"We can't stop here! This is bat country!"
"Welcome to the U-S-A,
We'll treat you right, unless you're black or gay, or Cherokeeeeee!!"
-Brian Griffin from "Family Guy" (the dog)
Quote:
This is assuming the cathedrals and tube cores in question use the same volume of wicking. Otherwise the burn time differences aren't valid as they apply to this discussion.
Quote:
I'm wondering if the tube core design has better motility than the cathedral design. Because of it's simplicity, I kinda think it might
Laugh while you can, monkey-boy
Quote:
Of course. And I've done side-by-side tests of tube-core and interleave wicks that use exactly the same amount of the same material, and posted the results on the web.
Quote:
Think again. Motility through a material is a function of the individual fibers' ability to wick, not of macro-scale features: think of 1970's era polyester opposed to modern-day capilene or other miracle fibers. That said, water would drip through the 4-5 layers of a tube-core wick before it would drip through the 10+ layers of an interleave wick simply because there is more material.
"We can't stop here! This is bat country!"
"Welcome to the U-S-A,
We'll treat you right, unless you're black or gay, or Cherokeeeeee!!"
-Brian Griffin from "Family Guy" (the dog)