Heat priming jet alcohol stove

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backwoods
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Heat priming jet alcohol stove

Post by backwoods » Sun Apr 18, 2010 1:01 pm

Hi.

Here is something interesting if you haven't already seen it.

http://www.youtube.com/watch?v=43M71bk_ ... ature=grec

Mine has a few more vent holes at the top though, as well as a better support frame.

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zelph
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Re: Heat priming jet alcohol stove

Post by zelph » Sun Apr 18, 2010 1:54 pm

That a clever design. One litre in 4 min. is really really great. Puttin out the btu's really quick :D

How does yours do on boil times and quantity of water?
http://www.woodgaz-stove.com/

backwoods
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Re: Heat priming jet alcohol stove

Post by backwoods » Mon Apr 19, 2010 4:31 pm

If memory serves between 5 and 6 minutes per litre of water.

My holes are concentric , more like a Roarer burner on an Optimus 8r stove.

The one in the video scares me a little.

realityguy
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Location: slightly north of Seattle,WA

Re: Heat priming jet alcohol stove

Post by realityguy » Mon Apr 19, 2010 4:43 pm

Appears the aliens still have Dan..tinny's rosebud... :lol: ...That video's been out for a long time...
The views and opinions expressed by this person are his own and not the general consensus of others on this website.Realityguy

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zelph
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Re: Heat priming jet alcohol stove

Post by zelph » Mon Apr 19, 2010 11:34 pm

The design looks as if the flame can blown out really easy. Is that the case with yours?


The design reminded me of Calcium Carbide lamps. I wonder if oops56 could convert one of his stoves to use carbide as a gas producer, maybe he has already made one and is holding back on us :mrgreen:
http://www.woodgaz-stove.com/

backwoods
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Re: Heat priming jet alcohol stove

Post by backwoods » Wed Apr 21, 2010 10:35 pm

If memory serves the carbide lamps had a tendency to explode.

If i recall correctly the reaction of the calcium carbide and water produced acetylene gas.

I still have a couple as antiques. Not easy to find Calcium Carbide around here.

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zelph
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Re: Heat priming jet alcohol stove

Post by zelph » Thu Apr 22, 2010 10:19 am

I had the base of a large 5 gal. size carbide lamp. It was used be a construction company long long time ago :D I would imagine it gave off a lot of heat as well as light. I heard the lamps made mines blow up :mrgreen:
http://www.woodgaz-stove.com/

backwoods
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Joined: Tue Mar 23, 2010 8:01 pm

Re: Heat priming jet alcohol stove

Post by backwoods » Sat May 29, 2010 1:24 pm

Hi.

There are size/dimension limits to the jet alcohol stove types.

For example i've made several from copper pipe and end caps 1/2", 5/8", and 3/4" with 1" caps for the bottom heater cup, with and without wick pressure Stoves.

It is true that the larger the pressurizing vessel is the better the results. Therefore a 3/4" copper pipe pressure vessel will work better than a 1/2".

The problem is that in a more confined space the alcohol switches back and forth between gas and liquid state, and does not have enough room to expand and remain in a gas state.

In a confined space the fuel burns off quickly and in a more liquid state.

This is why the soda can types work well. They have the volume to give a consistent gas state flow.

For a good alcohol pressure stove. One would need an hour glass shaped copper or aluminum form. A wick on the outside of the bottom part that you soak with alcohol and light.

You could add wick (internally) to the center transfer shaft to manage the flow or even add a decent valve.

You would light the top in the same way as the soda can type.

To fill, simply pour alcohol on the top and it will flow into the bottom via the exit holes.

Enjoy.

backwoods
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Joined: Tue Mar 23, 2010 8:01 pm

Re: Heat priming jet alcohol stove

Post by backwoods » Sun May 30, 2010 7:48 pm

i'l get back to you on that.
Last edited by backwoods on Mon May 31, 2010 1:10 am, edited 1 time in total.

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zelph
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Re: Heat priming jet alcohol stove

Post by zelph » Sun May 30, 2010 10:29 pm

What does the narrow section of the hour glass perform?

I have an aluminum beer bottle that might work for your idea. I'll get a photo of it tomorrow.
http://www.woodgaz-stove.com/

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