A central cooling system that circulates cold water through pipes to cool air in multiple areas of a large building.
A central cooling system that uses chilled water produced by a chiller to distribute cooling energy to air handling units and fan coil units throughout a building. Chilled water is typically supplied at 44°F and returned at 54°F through insulated piping. Chilled water systems are preferred for large buildings because they are more efficient and flexible than direct-expansion refrigerant systems.
The 500,000-square-foot office complex uses a chilled water system with two 600-ton centrifugal chillers and a cooling tower.
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