I needed to make something today… so I decided to make a “pocket rocket heater”. These are a small sized high air flow wood stove that sounds like a rocket as they suck so much air.
I decided to make mine “right” so I used an old, dried up paint can that was in the basement when I bought the house and some speghetti sauce cans. Ok, the “doing it right” ment I went out and bought vent pipe. I got a double walled gas water heater pipe, a 3″ to 4″ reducer, a variable elbow and a length of 4″ pipe. Dang is that stuff spendy! $40! Well, a bag of perlite is in there too.
I initially wanted to make a downdraft gravity fed unit, but that’s going to be really challenging to pull off in a paint can. So I made a simpler side feed unit.
Its not done, but I decided to fire it anyhow, if only using cleaning out the paint as my excuse. It needs a fire shelf so air can flow under the wood and then up through the fire. It also needs the fire area enclosed so I can insulate the can with the perlite.
I guess if you can insulate the burn chamber, these things can burn so hot that they burn clean. Just carbon dioxide and water. This is my goal. If I melt the stove pipe, its all in the name of science. Maybe next time I will get the right kind of pipe.
Hopefully tomorrow I can take it apart, see where it got hot, etc. and then finish the Pocket Rocket Heater. I want to add 1 more can to complete the burn chamber, and then pack perlite around it inside the can. I also want to set it up inside the garage so I can heat the garage. I will run it out one of my windows. Stove pipe out the upper part, flexable dryer vent for an air intake coming in the lower part.
I need one of those temperature guns so I can see what the temp gradient is on the stove pipe. I want to run enough length inside the garage that I actually can heat the garage.