A rocket mass heater is a combination of a rocket stove and underfloor heating. A rocket stove works by having such a strong draft created by the heat rising up the chimney that the flames can’t ...

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[Little Aussie Rockets] starts off the build by fabricating the feed ... and improve its efficiency. The rocket stove was able to effortlessly heat 80 liters of water to 70°C in a little over ...

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