Posted by da.bees on March 05, 2014 at 12:16:03 from (72.181.176.234):
In Reply to: Solar heating? posted by 55 50 Ron on March 05, 2014 at 09:58:58:
I am in North Tx and use solar as supplamently heat in my family room. As someone said,North to South effects opertunity but as you move North,the benifits are increasingly cost saving. Thermal mass is a subject that should be studied when considering solar heating. I reap as much benifit from heat stored in sand ballast during the day and used at night as direct gain during daylight. A neighbor installed tubing in his shop floor for conventional floor heat circulating water from a gas water heater. He changed his mind after the building was complete and is using solar heated water. The thermal mass of the concrete supplies heat for two days eventhough there is no sun. Only problem is when the tempature swings uppward from 30F to 75F within a few hours(very common in Tx). The floor gos right on heating so windows and doors have to be opened.
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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