It works on the basis of combining “mass” with “portability”: the sand, which can be easily taken out, provides some of the inertia. If the stove is emptied out then it is easier to move. Whilst in use, the Rocket stove has a vertical feed mechanism which means wood can be supplied to it automatically using gravity. During combustion, the flame is sucked sideways across the bottom which allows air to be supplied from above the fuel. It is an original design guaranteeing efficiency but needs supervision when in use.
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