Water chillers are industrial systems that cool water to around 20°C and circulate it to cool process equipment. They are a cost-effective alternative to city water and evaporative cooling towers. Choosing a chiller requires calculating the exact cooling needed. Chillers conserve water and are necessary for precision manufacturing. They can also cool non-water coolants to -50°C. Smaller chillers are used in homes for drinking water and aquariums.
A water chiller is an industrial water chiller that produces cold water to cool industrial process equipment. A water chiller is a complete system filled with refrigeration equipment, including a condenser, refrigerant, pipes, coolant expansion tank, pumps, and so on. The water is cooled to temperatures around 20°C (68°F) and pumped through a hydraulic circuit to reach the process equipment.
Industrial chillers can circulate up to 400 tons of water. These units start at around $2,500 and go up from there. Because some water coolers can be bulky, they are often designed to be stored on the side or roof of an industrial building and controlled from inside.
Water chillers are a popular alternative for industrial plants growing fast enough that it is cost effective to switch from city water to specialized refrigeration units. Water coolers are also a well known alternative to evaporative cooling towers. They are often claimed to be superior to towers in that the cooling water contacts the air in a tower but remains in a closed loop in a water cooling system.
Selecting a water chiller requires calculating the exact amount of cooling required – the precise amount of energy added to the coolant by the process machinery. Then you can select a water chiller for maximum efficiency.
Water coolers conserve water by circulating the coolant in a closed loop, rather than continuously pumping city water. Proper cooling is especially necessary in precision manufacturing, where a slight overheating can result in the loss of thousands of dollars of product or equipment. Some specialized chillers can lower the temperature of non-water coolants down to -50°C (-58°F). Process equipment requiring cooling includes lasers, ozone generators, plastic applications, vacuum pumps, welding and cutting machines, packaging and printing machines, X-ray machines, STM microscopes and much more. Smaller water coolers are used in the home to make tasty drinking water or to cool water for use in aquariums.
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