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Service:
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Year-round chilled water for air conditioning.
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Provider:
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District Cooling St. Paul Inc., an affiliate of District Energy St. Paul, Inc.
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Signed customers and building area served:
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100 signed customers with building facilities ranging in size from 12,000 to over 650,000 square feet, totaling more than 19.3 million square feet, located in downtown Saint Paul, Minnesota.
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Benefits:
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• Reduced use of CFC refrigerants or groundwater;
• Capital and operating cost savings;
• Flexible building operation;
• Improved tenant comfort;
• Less space required for cooling equipment.
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Current system:
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37,600 feet of twin supply and return chilled-water pipelines (up to 30 inches in diameter), circulating 1,040,000 gallons of water; six electric and two steam-absorption chillers at District Energy's main plant, two electric chillers at the Tenth Street cooling plant, and several satellite chillers; 6.7-million-gallon chilled-water storage systems.
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Award:
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2004-Engineering Excellence Award from the American Council of Engineering Companies of Minnesota for the design and construction of the Tenth Street chiller plant.
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System expansion:
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Additional electric-drive chillers at the new chiller plant located at 215 East Tenth Street in Saint Paul, Minnesota.
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System cost and financing:
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Phases I - VII, totaling $55 million, funded by revenue bonds plus a $3.0 million subordinated loan from St. Paul Housing and Redevelopment Authority.
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District cooling systems elsewhere:
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District cooling systems serve numerous U.S. cities including Hartford, Chicago, Nashville, San Diego, New York City and Minneapolis, as well as many college campuses, airports and military bases.
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