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Old 06-27-12, 05:52 PM   #12
DirtFlinger
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Here's a better view:


I even added an inline fan, colored weird but easier to see in the model. I think it could run at a very low speed. I didn't have time to add arrows to the screenshot but obviously hot air would get sucked into the upper vents, travel through the earth tubes and exit the lower vents into both rooms.

It seems like each "hole" could lead to an actual adjustable vent like is common in forced air headed homes.

I just have no way to tell what size tubes to actually use; 4", 6" or maybe even 8". But, it's such a small space.
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