Water chilling system, also known as water cooling system, is a method of heat removal from industrial equipment and components. This method is commonly used in large industrial facilities, such as hydroelectric generators, steam electric power plants, chemical plants, and petroleum refineries.
In addition to these, the method is also used to cool barrels of machine guns and lubricant oils. The convective heat transfer mechanism is applied to transfer the heat, as water is used as a conductor.
Most big industries use water cooling over air cooling due to the numerous benefits it has. It is not only inexpensive, but is also non toxic. Water is naturally capable to transfer heat over greater distances with reduced temperature difference. It has high density, thermal conductivity and specific heat capacity. All these qualities combined give water cooling an edge over air cooling.
However, on the down side, water causes biological growth and corrosion of metal parts. Additionally, dissolved minerals in water are concentrated and leave scales after the water is evaporated.
Water chilling system has been criticized on several occasions due to its vast impact on environment. Many people are concerned about the heavy amounts of water evaporated due to the process. Water, being a necessity and habitant for aquatic animals, must be taken care of. Scientists are trying to figure out ways to make water more useable and minimize the impurities that are added in water through soil and air. These impurities, especially solids, are the main cause of scale building.