Dallas, Texas U.S.A.
The U.S. Environmental Protection Agency (EPA) and the U.S. Department of Energy (DOE) have created an Energy Star Building Program, which rates energy efficiency in different types of buildings. The Centex building in Dallas, Texas, was awarded an unprecedented 99 out of a possible 100 in the rating system, using only 28.4 kBtu/ft2 yr. The building uses 14 Calmac Ice BankŪ tanks and a Trane helical rotary type water-cooled chiller to air-condition the 180,000-ft2 building.
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