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[–] recon_johnny 3 points -2 points (+1|-3) ago 

So it releases cooler air into the atmosphere. Instead of keeping it in the building.

Makes perfect sense.

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[–] mralexson [S] 0 points 3 points (+3|-0) ago 

It’s not like a modern day refrigeration system. It uses evaporation for cooling

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[–] watts2db ago 

which works great in an arid climate

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[–] DFW ago 

So it's an early air conditioner.

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[–] clamhurt_legbeard ago  (edited ago)

It blows cool air through the entire building.