[Stoves] Wick Burners: Martin's Tea Time Candle Stove

[Boll, Martin Dr.]

Frank,
Blow is nearly always a good solution for burning.
I don’t doubt that the tube that you describes works.

>Do you think the pipe
> should be something other than steel so the heat is not removed so fast?

I think, there will be a difference in desired heat at the beginning,
possibly too low for good burning, but it can turn to very hot, because the
burning chamber is very small and tight to the burning fuel.
Possibly the end of the metal-tube, where the burning occurs can be replaced
by some ceramic, if it does not work with only the metal-tube.
Simplest will be a test-run with the metal-tube, and the possibility to have
variation of the blow. From burning characteristic you will conclude how to
change.

> the
> one hold where the heat comes out could be changed to many small holes
> that
> circle around the bottom of the tea kettle?
I think the holes in the round are all right. But think of the size of the
holes. They must have the size, that the flame is not extinguished. By too
small dimension the flame cannot come out of the tube, when the tube is too
cool or possibly the jet-speed is too high.
In that case, the smoke must be (re-)lighted outside of the tube.
And when the smoke-speed is too fast, (which occurs by wood-gas very often)
you possibly have to place a baffle(?) (German: "Prallplatte"), to have all
the different smoke-speeds close by each other to keep the fire burning
after being lighted.

> Will that work?
Frank, my thoughts have often been different from reality. 
And I have seen changes for better which were worse. But that happens to all
stove-experiments. I have been told by other stovers in the same sense.
My idea for simple experiments: Make three same stoves/experiments, with one
little/small difference. Run them at the same time. One of the three will be
the best to continue with small steps.
 

Two years ago, I had a metal-drum, 53cm high 27cm diameter. I filled it with
old paper, containing as well crashed cardboard; lighted on top. By burning
down I made an inclination of the drum down to 45° from vertical, to get a
stream upwards on the upper side with burning gasses and on the opposite
side downwards for fresh air. It was not as satisfying as I thought.
To get a better burn,
 I introduced a 3/4" tube, about 1 m long with 90°bow on top into the smoky
burning drum. The tube was connected with an old vacuum-cleaner in the
blow-mode. It made a good and hot burn. That was before I saw the
Deom-turbo-stove in the web, which is a likely burning type.
Tom had put the picture a lot of time ago, to show (with English
part-description) but I cannot find it now, therefore I looked for the
website. Here it is:
http://rocles03.free.fr/deom/pag_chaudiere.htm

After you have seen this site:
How about blowing not from downside up through the cardboard but from upside
down against the upper end of the cardboard being in glow, and re-lighting
the smoke outside the tube if needed, as described above?
Another idea:
You will not need a big amount of air, to get only the cardboard gasified.
But if you want to burn as well the produced charcoal, the blow must be
bigger and the circular holes must be bigger, that the flames can go out of
the metal-tube.


Good luck with burning!

Martin




> -----Ursprüngliche Nachricht-----
> Von: frank at compostlab.com [mailto:frank at compostlab.com]
> Gesendet: Sonntag, 8. Oktober 2006 05:39
> An: Boll, Martin Dr.; Stoves-List
> Cc: 'Frans Peeters'; crispin at newdawn.sz
> Betreff: Re: Re: [Stoves] Wick Burners: Martin's Tea Time Candle Stove
> 
> Martin,
> 
> The main reason I think the cardboard could be a great fuel is because it
> has
> all those tubes running the length. To preheat? Perhaps the following:
> 
> A five cm diameter pipe about a meter long. Drill a small hole about three
> cm
> from the right end and insert a nail through the pipe. Screw on an endcap.
> About three cm left of the nail drill a hole in the top of the pipe about
> two
> cm in diameter. Slide in rolled cardboard fuel sticks from the left until
> it
> hits the nail. Slide in a spring and cap the left side of the pipe. Drill
> a
> hole in the left cap and have air under pressure enter the pipe, go
> through
> the air chambers of the fuel stick to the end of the pipe, them back
> around
> the outside edge of the fuel stick and out the top hole. Remove the right
> cap,
> stick in a fire starter and light. Screw on the cap and start the air.
> Place
> our tea kettle over the hole where the heat is coming out, and having the
> steam directed into our soup in the haybox, it should only be a short time
> before Frans, you and I are enjoying our rewards.
> 
> We could have a sealed drop pipe to catch the ash. Do you think the pipe
> should be something other than steel so the heat is not removed so fast?
> Or,
> if that is not important, perhaps the very hot pipe could be placed
> directly
> into the water to get it to steam that much faster in a verticle setup and
> the
> one hold where the heat comes out could be changed to many small holes
> that
> circle around the bottom of the tea kettle?
> 
> So the air goes to the end of the pipe where the fire is, then the hot
> gasses
> go back around the fuel stick a few cm to preheat as the stick moves
> forward,
> and out the hole(s) to heat the pot.
> 
> 
> 
> 
> Will that work?
> 
> Frank