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November 23, 2010

The Austonian Chilled Water Cooling System a Factor in the Building’s Four-Star Austin Energy Green Building Rating

Water and energy conservation is a component of  the recent Four-Star Green Rating of The Austonian from Austin Energy Green Building. In an effort to use energy efficiently, The Austonian employs a chilled water air cooling system. Chilled water air conditioning systems use less energy than individual condensation units.

How does a chilled water system work? A centrally-located downtown cooling plant distributes water cooled to approximately 44 degrees to individual buildings through a network of pipes beneath the city streets. The chilled water reaches a building and circulates through refrigeration coils that cool the building’s air.

The Austonian collects condensate from the chilled water system in tanks and uses it to irrigate the green roof terrace located on the building’s 10th floor. The use of condensate for irrigation purposes reduces The Austonian’s overall water usage.

Watch a video from the Downtown Austin Alliance’s Downtown TV show about Austin Energy’s Chilled Water Loop below.

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