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rocket mass heater
1 hour workshop on building (rocket mass) heaters.
In the last 15 minutes or so a few very important principles are discussed that no one should miss.
Among these: the temperature outside will help determine draught. If the roof of the room/house has holes [which is common], then a low or horizontal chimney may end up sucking in air (from outside) rather than drawing air from the fire.
VERY GOOD YET CONCISE TUTORIAL
Rocket Mass Heater without the mass...
Portable Rocket Mass Heater
Very clear step-by-step build; about 10 min.
9/15/2014, 11:43 am
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