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A liquid (glycol based) chiller with an air cooled condenser on the rooftop of a medium size commercial building. In air conditioning systems, chilled coolant, usually chilled water mixed with ethylene glycol, from a chiller in an air conditioning or cooling plant is typically distributed to heat exchangers, or coils, in air handlers or other types of terminal devices which cool the air in ...
Fan coil units linked to ducted split air conditioning units use refrigerant in the cooling coil instead of chilled coolant and linked to a large condenser unit instead of a chiller. They might also be linked to liquid-cooled condenser units which use an intermediate coolant to cool the condenser using cooling towers.
Liquid-cooled chillers are normally more energy efficient than air-cooled chillers due to heat rejection to tower water at or near wet-bulb temperatures. Air-cooled chillers must reject heat at the higher dry-bulb temperature, and thus have a lower average reverse–Carnot-cycle effectiveness. In hot climates, large office buildings, hospitals ...
York International is the final name of a company started in York, Pennsylvania, US, in 1874, which developed the York brand of refrigeration and HVAC equipment. [74] The York brand has been owned since August 2005 by Johnson Controls, when it was sold to them for $3.2 billion. [75] [76] At the time of the acquisition, it was the world's ...
The water in the chilled water circuit will be lowered to the Wet-bulb temperature or dry-bulb temperature before proceeding to the water chiller, where it is cooled to between 3 and 6 °C and pumped to the air handler, where the cycle is repeated. [3] The equipment required includes chillers, cooling towers, pumps and electrical control ...
For a human-powered version, see yakhchal.. When the ambient air temperature drops to a set temperature, a modulating valve allows all or part of the chilled water to by-pass an existing chiller and run through the free cooling system, which uses less power and uses the lower ambient air temperature to cool the water in the system.
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