Quote:
Originally Posted by Old Tele man
So, if Tdb is 95ºF and Twb is 67-69ºF, the air blowing from the cooler [ T(cooler) ] will only get down to about 73-74ºF...at almost 80%RH! But, your body wants to see/free something below 72ºF and closer to 30-50%RH!
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Great clarifying comment, Old Tele. Thanks. So, on a low humidity day, the humid air out of the evap cooler would quicky dissipate its water into the drier air already in the car, no? Just like it would dissipate the cool air, which would rapidly warm. Seems to me what probably makes these popular is not that they condition a room like compressor AC does, but that they are a blast of cool air. They're something between a fan and an AC.