A rocket stove achieves efficient combustion of the fuel at a high temperature by ensuring a good air draft into the fire, controlled use of fuel, complete combustion of volatiles, and efficient use of the resultant heat. It has been used for cooking purposes in many energy poor locales (notably Rwandan refugee camps) as well as for space and water heating. - See more at: http://survivalteamtactics.com/diy-brick-rocket-stove/#sthash.XE6uCSEE.dpuf
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