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Ancient Iran had air conditioning
(lemmy.world)
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this post was submitted on 24 Jul 2023
1750 points (98.7% liked)
Mildly Interesting
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10 degrees is incredible though.
These days in Yazd the average warmest temperature in July is 40 degrees, so if what you're saying is correct they'd be able to cool it down to a liveable 30 degrees even in the warmest part of the day. And at night temperatures still dip to 26, so the indoors temperature probably wouldn't quite reach 40 even without this system. So it might make the difference between 40 degrees outdoors and high 20s indoors, which is fantastic.
Would be interesting to know if average temperatures got up to 40 in the summer around the time they were built as well, or if average temperatures in the region have been rising.
And what wind strength is required to achieve 10C decrease
I do wonder what the humidity is. The drawing shows that the new air is mixed with air coming from the water canals below which I assume is very humid.
Looks like its essentially a swamp cooler.
So I wonder how the 30 with humidity feels compared to 40 without.
Im now at a 32 but with the current humidity it feels like fucking 38!
Well, Iran is mostly a desert so I assume the air must be very dry.
That would be another benefit of having the water underneath evaporating up, increasing air moisture.