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An HVAC cooling tower is used for disposing or rejecting heat from chillers. Air cooled chillers are less effecient than water cooled chillers due to rejection of heat from tower water near wet-bulb temperatures.
The whole idea behind implementing high temperature cooling systems in buildings is to introduce a more energy efficient cooling system compared to the conventional all air system. A precise and detailed design strategy needs to be followed in order to truly utilize the potential benefits of HTC systems.