Swamp Evaporative Air Cooler

evaporative
Relating to or involving evaporation
relating to or causing or being caused by evaporation; "an evaporative cooler"

air cooler
(air-cooled) cooled by a flow of air; "an air-cooled engine"
(Air Cooled) A transformer which uses air to cool by use of fans or normal ventilation.
An air cooler is any device for cooling the air inside a building, room, or vehicle. . Air coolers are used in thermally insulated casings to form refrigerators and are also used in buildings to cool rooms.

swamp
low land that is seasonally flooded; has more woody plants than a marsh and better drainage than a bog
drench or submerge or be drenched or submerged; "The tsunami swamped every boat in the harbor"
Used to emphasize the degree to which a piece of ground is waterlogged
a situation fraught with difficulties and imponderables; "he was trapped in a medical swamp"
An area of low-lying, uncultivated ground where water collects; a bog or marsh