A chiller swamp cooler can be a very energy efficient and economical replacement for a conventional air conditioner. The chiller swamp cooler concept and design are very simple and construction should present only a moderate challenge to make one for yourself.
How to Make a Chiller Swamp Cooler
Build a wooden square using the four 2" x 2" x 24" wooden pieces. Screw the pieces securely together with 3" wood screws. (For best results glue the pieces prior to screwing them together.)
Wrap the cheese cloth around the wooden frame, securing it in place with staples. Adding a second layer of cheese cloth around the frame will allow for better operation.
Drill 1/16th inch holes into the tubing every 2 inches for the first two feet. Secure this end of the tubing atop the frame using the fence staples. Align the holes so they are on the bottom, facing the frame.
Secure the tubing along one side of the frame using fence staples. Connect the other end of the tube to the small submersible pump and place the pump in the collection tray.
Secure the box fan against the frame and put them both on top of the collection tray. Secure all three together using the banding material.
Fill the collection tray with water. You are now ready to supply power to the pump and fan. As the water passes down the cheese cloth the fan will push air through, cooling the air.