www.greenpowerscience.com This is a 75 cu ft Solar over that took about 5 days to build. Every connection is sealed with silicone. The maximum air temp measured with all the mirrors in place reaches 221 F with 70 F outdoor temperature. We have a bit more work to do as 2 collection panels are wood and cannot handle the heat of the mirrors. The floor is plywood an is not affected. Without the mirrors the maximum temp achieved is 201 F. Raising 75 cu ft is a task. This oven gains about 3 F every minute up to 150 F when exposed to sunlight with no mirrors. After that it increases 1F every minute. Woods ignition temperature is higher than what we will be needing so the frame works well and is an excellent insulator.

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This is the completed (as far as I plan on completing it) propane forced air heater. The fan is from a kitchen exhaust vent hood. The rest is just various pieces of 6″ and 8″ ductwork and 1/4 galvanized piping. The final piece to get the flame right was the polyurethane can in the back-center of the inner tube. In this run I estimate it to be putting out around 100000 BTU, but by reducing the amount of air bypass I can get it up to at least 200000 BTU, limited only by how much gas the 20 lb. cylinder will put out. For those interested I made a forum thread covering the process. backyardmetalcasting.com

This is still the same coil pipe stove – midi what I uploaded before. The only difference is that burner has smaller jet than alcohol burner has. That is less than 1 mm. I think that smaller jet provides with longer burning time, but it has to be tested. It still burns pure alcohol, but about it hopefully in next video.

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I’ve decided to build a small foundry. I designed & built this burner based on what I’ve seen on you tube.

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Burner Clip 102 Low by Flow

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