[Stoves] scoping out a practical solid fuel stove igniter
Boll, Martin Dr.
boll.bn at t-online.de
Thu Jul 10 00:29:10 CDT 2014
To all stove lighters, experimenting with sparks,
get some results of tiny experiments:
lighting with a piezo gas-stove lighter:
-a very dispatched "cloud" of cotton: does not work
- lighting it soaked with burning alcohol (by chamber temperature about 20°C): does not work
- a normal safety-match ! : does not work
- engine-gas, not tested; could possibly work, but have omitted out of safety reasons for "Otto-Normalverbraucher" (=simple unreflected user)
I guess, it needs a tiny real-gas-cloud-air-mixture of the right proportion and concentration.
Old fashioned lighter with "big" spark: Is _possible_, to light a small dispatched cloud of cotton (With some work of repetition)
Fire-steel:
lights easy the cloud above burning alkohol ( if the fluid is not too cold. Try the liquid -not warmed- by colder days, you will fail.)
lights easy tiny cotton-clouds. (must be very small fibers, not thin layers!) You can use natural sorts of seeds with cotton surrounding or some dendelion "soft-balls"
The two manners to ignite:
Small spark with high temperature very dispatched fuel-air (gas-air in right mixture)
Relatively "big" amount of heat from low temperature to light first charcoal-like fuel, which (burns=)glows by low temperature and secondly blow the glow to self-ignition temperature of other fuel.
Interesting to know the optimal air-speed (mind the surrounding temperature makes differences) to elevate the charcoal-glow to that temperatures.
- some rubber-balloon for children or a bicycle-tire, equipped with a nozzle, could be a low-tech solution for ease, -and not to get out of breath-
I think it is important to think (in guessed numbers of energy-amount) about the really long "fire-cascade" from "smallest fuel" to real burning pellets or logs.
Have in mind the light=heat-reflection of sparks and flames from each-other and against each-other-.
-That radiation counts so much from igniting up to sustaining the fire, because there is a big (relative!) energy-loss of the flames by radiation.
Let us have some tiny useful experiments shared !
Regards
Martin
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