There are lots of post on this simple DIY ac unit. I plan on taking this on my next camping trip to provide a little comfort at night. Aside from the 57 degree air it blows out, it provides a nice level of white noise from the fan.
All you need are a few supplies. (You can get all of the for under 10 dollars.
-1″ pvc connector
– clip on 6″ fan
Load the cooler with ice or frozen bottles (bottles don’t distribute as much moisture), turn in the fan and you’ll get a nice steady stream of cold air. My test was over night and the bottles shown were still cold with a few of the bigger bottles still partially frozen. I’m thinking 4 two liter bottles would definitely provide cold air for 6-8 hours easily.