Water Cooler

In water cooled systems a liquid, usually water, is pumped through pipes. The liquid takes the heat from the components and dissipates it in a radiator. It operates on the same principal as the engine cooling system in a car where coolant is pumped through the engine and to the radiator.An air cooler works on the principle of evaporative cooling wherein evaporation of water is used to cool the air. A simple example of evaporative cooling is sweating in humans. As sweat starts to evaporate, it extracts the extra heat absorbed in it from the skin in the form of gas thus resulting in a cooling effect.