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Best means to heat pot - directly over flame, or reburn drum top of thermal mass rocket stove  RSS feed

 
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Hi,

As well as making a classic thermal mass rocket stove with 44 gallon drum on top as re-burner, I am also wanting something that will just heat a large pot really fast and then keep it at temperature for a while - for canning jars, pasturising straw for mushrooms etc.  This will often be in summer when we don't really need the thermal mass.

What will do this faster and more wood efficiently, a basic fire-bricks rocket stove with the flame directly on the pot, or sitting the pot on top of the 44 gallon drum re-burner?
 
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Direct heating. Check aprovecho institutional rocket.
 
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