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By Dean Still

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Extra resources for Capturing heat: Five earth-friendly cooking technologies and how to build them

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The hot air is forced through a tight gap that forces the heat to touch the inner drum, The oven is built out of 55 gallon drums and heating it more efficiently than would happen can be made inexpensively. if the gap were wider. The oven can be built in different ways. One The inner drum is low mass and is insumethod uses two drums. The inner drum lated by the aluminum foil that creates air holds the bread. It is completely closed except for three doors cut into the front of the barrel. gaps between each layer.

Earthen stoves can use so much wood, to bake so little bread! ) so that the heat isn't as easily lost. The low mass oven heats to 350 degrees F. in twenty minutes and keeps at that temperature with small branches added to the fire. The split drum slides over the inner barrel. How flue gases pass between the drums. 32 How to Construct a Winiarski Rocket Oven Cut three door openings in a 55 gallon drum. Leave the top and bottom on the drum. Gut the top and bottom out of a 55 gallon drum. Split the drum longitudinally.

The inner drum lated by the aluminum foil that creates air holds the bread. It is completely closed except for three doors cut into the front of the barrel. gaps between each layer. ) small air space, insulate between The insulated the two barrels. firebox keeps the (We've also built fire hot, assisting bread ovens withcomplete combusout aluminum foil. tion and reducing Instead a third smoke. barrel surrounds the second. ) A and air is pregap of about an heated before it can inch, between the cool the fire.

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