Year-round chilled water for air conditioning
District Cooling St. Paul Inc, formerly District Energy Services Inc., an affiliate of District Energy St. Paul Inc.
34 signed customers, ranging in size from 331000 square feet to over 600,000 square feet
April 1993: Start-up of cooling operations and ongoing expansion construction June 1994: Chilled water storage system operational
No use of CFC refrigerants or groundwater Capital and operating cost savings More flexible building operation Improved tenant comfort Less space required for cooling equipment
13,000 feet of chilled water pipeline (up to 30 inches in diameter), circulating 375,000 gallons of water. Five chillers at District Energys main plant and two chillers at a satellite chiller plant; a 2.5-million-gallon chilled water storage tank to help reduce peak electric demands; 13, 107 tons of capacity, serving over 7 million square feet of building space
PhaseI-$8.8 million total funded by $5.8 million in revenue bonds plus a $3.0 million subordinated loan from St. Paul Housing and Redevelopment Authority; Phases II and III totaling $18 million in revenue bond
The system is designed to expand to 30,000 tons of cooling over the next 15 years
District cooling systems serve a number of US cities and many college campuses, airports and military bases. Two major utility district cooling systems include Hartford, serving over 14 million square feet of space and Minneapolis, serving over 18 million square feet of space
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