Visualizing your garden with the mister (in my head): it’s like the veggie section of the super market where just as you reach for a head of lettuce, the water comes on and gets you all wet! >>grin<<
Here is a pic of a mist cooling kit:
http://www.orbitonline.com/products/Kits/04/04/07/1301/
Here is a pic of the nozzle:
http://www.orbitonline.com/products/Maintenance%20and%20Accessories/04/13/01/54/
I brewed my test up with 5 nozzles and a 10’ section of SCH 40 PVC Pipe. Put a PVC Hose Thread Male adapter on the pipe so I could couple it with garden hose. At this point it is a test.
The nozzles make a 2-1/2 ft. cone spray, very fine. The idea is to use evaporation to lower the outside temperature in a small area. It works better where it is somewhat confined but still a breeze.
The more efficient systems have a pressure booster that boosts up to 160 PSI.
There are even “personal coolers” that you can carry around. The company sent a lot of them to the troops. Thought that was a good gesture.