ARCHIMEDES SOLAR OVEN SOLAR POWERED FURNACE NO ELECTRICITY GAS HOT SLOAR COOKER

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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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How long does a natural gas forced air furnace last?

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We are looking at a house and the furnace is from 1975. All I really know about it is that it is still functional (was coming on when looking at the home), it’s natural gas, and also forced air. How long do these normally last with proper care and maintenance?


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Which energy source is best to heat the house?

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I have an oil water heater and furnace and the water heater just died and the furnace is not too far away. I am wondering if oil is the best thing to stick with given that prices have gone way up. Keeping the current energy prices in mind, what do you think is the best way to heat the house? Would it be better to switch to natural gas or electric? Or something else like propane? I am thinking in terms of saving money.
I live in the United States.


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Banging noises after Keeprite Propane Furnace shuts off, what is it?

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After my furnace shuts off and for about 3 of an hour there is this clangy banging noice that happens every few seconds or so. Is this a problem with the heat exchanger or is it something else? I have just had the ventor motor replaced and the repair technician will not return my calls.

How do I install a suspended propane furnace in a greenhouse?

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I’m building a 30-by-48-foot greenhouse that came with a Modine furnace. The directions tell me only to screw 3/8-inch threaded rods into the unit and secure them with nuts. How should I attach the rods to the purlins and how should I vent the unit? And, finally, how am I supposed to lift 169 pounds off the ground?


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