here's a desert boon dockers dream

[4905 doc]

Just amazing, and so simple to make. 

http://www.thegoodsurvivalist.com/how-to-make-a-454-homemade-air-conditioner-for-about-15-this-is-totally-awesome-and-so-easy-to-make/

[belfert]

You do have to have a supply of water to run a swamp cooler.  Water can be an issue at times out in the desert.  There is at least one company making a swamp cooler specifically for RVs.

My friend made a redneck outdoor swamp cooler using a large fan on a stand and a pump up spray bottle.  It sorta worked underneath a party tent.

[Lin]

This is not a swamp cooler.  It has a frozen gallon bottle of water in it, so the air is really cooled as long as the ice lasts.  However, knowing some people on this board, they are right now trying to figure how to connect a compressor run off the engine to it.

Another note here-- In order for the device to do any cooling, the freezer that is producing the ice should really be in a different space, since freezing the gallon would be heating the space through the frig condenser.

[belfert]

My bad.  I just looked at the photos and assumed it was swamp cooler.  A lot of people use five gallon buckets like that to make swamp coolers for Burning Man.