How do cooling towers operate in water-cooled chillers?

Water-cooled chillers produce waste heat during the refrigeration cycle that must be exhausted to the atmosphere. Cooling towers achieve this by rejecting waste heat through the evaporation of a water stream, cooling the fluid to near the wet-bulb air temperature. These towers can use natural draft or induced draft mechanisms to move air and manage the condensing side of the chiller system.

What we know

• Chillers create waste heat as a necessary by-product of refrigeration that must be exhausted to the ambient environment or recovered. [3]
• Water-cooled chillers can be evaporatively cooled via an induced or forced draft cooling tower. [3]
• Cooling towers reject waste heat by cooling a water stream to a lower temperature, often using water evaporation to reach near the wet-bulb air temperature. [4]
• Cooling towers are classified based on how air is induced into the structure, with main types including natural draft and induced draft. [4]

Where to go next

• how it workedWhat are the main refrigeration cycles used in industrial chillers?
• compared withHow do dry cooling towers differ from evaporative ones?
• what followedWhat are the efficiency and environmental advantages of water-cooled systems?
• a case in pointHow do natural draft and induced draft cooling towers function?
• the bigger pictureHow does water cooling function across different industrial applications?
• an unexpected connectionWhat do cooling towers actually emit into the atmosphere?While the general public often mistakes cooling tower emissions for smoke or harmful fumes, their output primarily consists of harmless water vapor.

Sources

• [1]water cooling (Wikidata Q7667810) · CC0 1.0
• [2]Water cooling · CC BY-SA 4.0
• [3]Chiller · CC BY-SA 4.0
• [4]Cooling tower · CC BY-SA 4.0
• [5]District cooling · CC BY-SA 4.0