... Chilled Water Systems
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The Operations Center also includes a 5 million gallon stratified cold water storage tank. The thermal storage system shifts a portion of the University’s chilled water production to off peak periods, reducing the need for electric purchases from Duke Energy during peak times. After it is chilled, the water flows into a loop piping system, which distributes the water to bridge interface systems that control the flow of chilled water in and out of each of the campus buildings. These bridge interface systems ensure that the buildings receive and efficiently use the chilled water to meet their cooling demand. The distribution system can pump up to 100,000 gallons of chilled water per minute through more than 22 miles of underground piping and 150 individual building bridge systems. When the water has been used (warmed), it is returned to a chiller plant to be chilled again. In addition,
Chilled Water Systems manages eight stand-alone chillers.
Generally, these chillers serve individual building(s) that cannot be
serviced by the University's distribution system. |
