Technically, the device you have shown is not a "swamp cooler". A "swamp cooler" blows air over a wetted pad and cools the air to the dew point by evaporating the water. The lower the dew point (lower humidity) the more effective the swamp cooler.
I high humidity areas, the dew point is too high and you do not get the cooling.
Blowing the air over the ice will drop the dew point a bit, but most of the cooling is sensible. To get much cooling, you need a lot of ice contact area.
Ken
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KE5DFR
2013 HitchHiker Champagne 38RLRSB, 2012 F350 Dually crew cab, 6.7L,
Mobile- Yaesu FT857D w/ Lil' Tarheel II antenna and Larsen dual bander, Turbo Tuner.
Base unit...Kenwood TS480HX, LDG AT200 Pro tuner, Eagle One Vertical and Windom 80 meter dipole.
Standard Schnauzer..her call is K9WOOF
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