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Dear Friends
I have attached photos of how the round bottom of a large cast iron pot can be accomodated in an institutional Rocket Stove. This and another beside it were constructed by Peter Scott and me last week. The frame in picture 1 is made from 12mm round bar.
There is a ceramic tile combustion chamber (in the form of a chimney) in the center with a single brick wall around it. The space between is filled with a clay+wood shaving+cement mix. The same was put into the gap between the brick wall and the outer cement block wall.
Picture 2 shows how the steelwork uses the rings as a mason's guide to create the gas path The the ribs provide the offset of the pot from the gas path, most of it being 12mm. The hole is temporarily plugged with a cement sack while the curve is produced.
Picture 3 is the final appearance from above with the 71 litre pot in place (a No. 25 pot). It weighs 60 Kg when empty. They are widely used at the hundreds of orphan neighbourhood care points in Swaziland.
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| 1. The frame in this picture is made from 12mm round bar. |
2. The steelwork uses the rings as a mason's guide to create the gas path The the ribs provide the offset of the pot from the gas path, most of it being 12mm. The hole is temporarily plugged with a cement sack while the curve is produced. |
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| 3. final appearance from above with the 71 litre pot in place (a No. 25 pot). It weighs 60 Kg when empty. They are widely used at the hundreds of orphan neighbourhood care points in Swaziland. |
Best regards
Crispin
New Dawn Engineering
Swaziland
November 1, 2005
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