I've been thinking about alcohol stoves and making another and thought I'd bounce an idea off people here to see if anyone else has tried this and learned anything.
I'm currently using a penny alcohol stove made with the plans from http://www.csun.edu/~mjurey/penny.html
I have no real complaints and will probably make another for some relatives but wanted to try something new too.
It seems that most of these stoves rely on getting the fuel hot by way of heat conducting through the metal. Aluminum is great for this because the thermal conductivity is quite high (this is why heat sinks for electronics use aluminum after all). But this also means it is fairly effective at a cold ground or cold air taking away that heat. I even came across one web page where someone mentioned he tried setting his lit stove on a block of ice and it immediately went out.
So what I'm thinking is something fairly similar to the penny stove but made with red bull or starbucks energy drink cans. Those are smaller diameter than normal 12 oz cans. Then I was going to wrap the stove with some sort of high temperature insulation like http://www.acehardware.com/sm-alpha-...i-1290599.html for example. But maybe just some fiberglass insulation will work and that's much cheaper. Then the plan is to put the insulated stove into the bottom half of another can which is probably a 12 oz can for mechanical protection of the insulation.
In the end my vision is more or less a small version of the penny stove with built in insulation.
What I'm wondering is if this has the potential to get too hot internally or not. Or maybe it will just burn too fast to be effective at boiling water.
Anyone have any thoughts before I go ahead and try it out? It'll probably be a few weeks before I cut any metal so maybe I'll have some good ideas before then.
Thanks
-Dan (who really needed Yet Another Project)



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