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As some of you know from following me on facebook i have been working on building Rocket Stoves, they are a very simple, efficient way of heating your shop, house etc. The benefit being that you don't need to burn cordwood, these stoves typically burn twigs and sticks, usually no bigger than an inch and a half around. They are placed in either a vertical or horizontal burn tube and the the draft over the fuel keeps the fire lit.
These stoves are generally built as a mass heater, the fire burns and the exhaust travels through pipe that is covered over with cobb and straw, the heat is absorbed into the mass and the exhaust exits the house somewhere around 200*F. the fire burns very hot and there is usually very little and in most cases no smoke produced from the burn process. As a result ash build up is very minimal as well.
I have built two so far, the first is much more simple in design but it works well. The downside is the stainless screen soots up from the pellets so burn time is limited to about an hour, i will be fixing this in the future. Stove 2.1 which i will post pictures below has a vastly improved heat riser design, stainless coild for thermo syphon capabilities and improved pellet feed design with ash drop. Pellets burn super clean and the gravity feed keeps things to minimal complication, i.e. no electricity.
Rocket Stove V1.2 made from one 40lb propane tank, cut on the lap joint.
V2.1 made from two 30lb tanks, cut just beyond the bell curve at the top, welded together and then the lower lap joint was cut.
Testing of burn tube and heat riser, V2.0
16qt stock pot with 4 gallons of water, thermosyphon works with no pump, cold water flows into the coil, heats up and flows out the top.
These stoves are generally built as a mass heater, the fire burns and the exhaust travels through pipe that is covered over with cobb and straw, the heat is absorbed into the mass and the exhaust exits the house somewhere around 200*F. the fire burns very hot and there is usually very little and in most cases no smoke produced from the burn process. As a result ash build up is very minimal as well.
I have built two so far, the first is much more simple in design but it works well. The downside is the stainless screen soots up from the pellets so burn time is limited to about an hour, i will be fixing this in the future. Stove 2.1 which i will post pictures below has a vastly improved heat riser design, stainless coild for thermo syphon capabilities and improved pellet feed design with ash drop. Pellets burn super clean and the gravity feed keeps things to minimal complication, i.e. no electricity.
Rocket Stove V1.2 made from one 40lb propane tank, cut on the lap joint.
V2.1 made from two 30lb tanks, cut just beyond the bell curve at the top, welded together and then the lower lap joint was cut.
Testing of burn tube and heat riser, V2.0
16qt stock pot with 4 gallons of water, thermosyphon works with no pump, cold water flows into the coil, heats up and flows out the top.
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