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Persia? Isn't that the place the US Military is poised to bomb into the Stone Age because they refuse to use our fake currency?
I could see wanting to replicate this clever system, but Zoning wouldn't allow for the tower, the EPA would prohibit due to the proximity to water, the bank would still require AC for a mortgage....
No the holes in the tower are on the downwind side which creates a low pressure zone. The wind is pulling air out of the tower. If wind reverses so does the air flow direction. Cool air would come out of the ground hole instead of into the home. They must have had a way to close the vents on the tower or to close the ground holes if the wind changed.
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[–] SerialChiller 1 point 13 points 14 points (+14|-1) ago
Hot air rising up the tower creates a low pressure in the chamber, which sucks in air from the quannat.
It was Yazdi technology, from the pre-islamic period of Persia.
[–] Purged 1 point 4 points 5 points (+5|-1) ago
Persia? Isn't that the place the US Military is poised to bomb into the Stone Age because they refuse to use our fake currency?
I could see wanting to replicate this clever system, but Zoning wouldn't allow for the tower, the EPA would prohibit due to the proximity to water, the bank would still require AC for a mortgage....
[–] foltaisaprovenshill ago
US mil isn't bombing Iran because Hillary isn't president, and the last significant chickenhawk, Bolton, was fired.
[–] CowWithBeef 0 points 1 point 1 point (+1|-0) ago
No the holes in the tower are on the downwind side which creates a low pressure zone. The wind is pulling air out of the tower. If wind reverses so does the air flow direction. Cool air would come out of the ground hole instead of into the home. They must have had a way to close the vents on the tower or to close the ground holes if the wind changed.
[–] Gravspeed ago
It actually doesn't matter what direction the holes are as long as they aren't directly catching wind, the chimney effect will keep the air flowing