As the name suggests, these units cool air through the process of evaporation. As the liquid evaporates, then heat energy is absorbed as the state of the substance changes from a liquid to a gas. This is known as the latent heat of evaporation. In the case of water, this is simply changing from water to steam although the steam is just water molecules that have left the water as free moving particles.
Evaporative Cooler Hire
Evaporative coolers work on the principle of passing air over a “water blanket” causing the water to evaporate and the blanket to be cooled. Air now passing over this blanket is cooled providing a fresh cool natural breeze for the office, working environment or home.
This process is evident on hot summer days when sea breezes draw air over the cooler sea and provide coastal regions with air temperature often as much as 10-15 degrees centigrade cooler than just a few miles inland.
The human body also uses this natural process for cooling in the form of sweat which leaves the body thus cooling the skin via the process of evaporation. Warm blood is then cooled as it flows through the cooler skin near the surface.
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