Posted by omahagreg on January 28, 2010 at 18:44:04 from (72.196.16.150):
In Reply to: Solar Heat posted by MTC on January 28, 2010 at 16:37:47:
In about 1980, Dad and I built an 8x8 forced air when we lived by North Sioux City South Dakota. We had aluminum baffles in it to make 9"x9" squares, then the whole thing was painted flat black. We did some research and found out the optimum sun angle in winter, so the bottom of the panel was away from the house approximately 3 feet, top was attached to the house. We used a furnace fan switch that had a 20 degree spread-came on at 110 degrees and off at 90 degrees. Used a furnace fan as well. It worked well, but we did end up doubling the collector size, as it seemed to be too small. Then we moved to Omaha, and still had some of the opaque panels. Dad's house had an attached porch on the south side, so he covered it with those panels. That porch worked WAY better than our designed collector, for WAY less effort. Greg
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Today's Featured Article - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o
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