How does a Water Cooler Work?

A water cooler works by a refrigerant that is compressed and circulated around the inside a sealed tank. There is usually a reservoir that holds the water and then there are pipes that run through this reservoir. The pipes then move super cooled fluid through it and cools the water in the reservoir. You can find more information here: ttp://www.cooledwater.com/technology/how_fridges_work.asp