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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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More than 97 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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• No 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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35,600 feet of twin supply and return chilled-water pipelines (up to 30 inches in diameter), circulating 980,000 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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