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District Energy Corporation

Overview of the sustainable geothermal energy project to serve the new Lancaster County Adult Detention Facility, including the geothermal heat pump central plant, energy conservation measures, projected energy cost savings, and funding details.

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District Energy Corporation

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  1. District Energy Corporation Sustainable Project SW 40th Thermal Energy Facility To Serve the New Lancaster County Adult Detention Facility April 2011

  2. Project Overview • Geothermal Heat Pump Central Plant • Serving County Adult Detention Facility • 779 Beds • 270,000 Square Feet • Domestic Hot Water Pre-Heat System • Emergency • Power System

  3. Overview of Geothermal Heat PumpCentral Plant • Four Borefields in 8 Acres • 667 Bores at 300 ft Depth • 25 Nominal 70 Ton Water-to-Water Heat Pumps • 1050 Tons Firm Capacity • Drilling 100% Complete • Circuit Installation 90% Complete • Circuit Tie-Ins to Plant 75% Complete

  4. Energy Conservation Measures Energy Recovery Systems Daylight Sensors Fluorescent Dimming Control Management system Ozone System for Laundry Snowmelt Geothermal System Variable Frequency Drives

  5. Domestic Hot Water Pre-Heat 1st Stage - Piping to Allow Heat Transfer from DEC HWS, HWR, or CHWR Lines 2nd Stage - W-t-W Heat Pump in Building Using Borefield as Heat Source Balances Load in Borefield (building is cooling dominated) Projected Energy Cost Savings of at Least 35% for DHW Production

  6. Sustainability Projected 29% Energy Cost Savings Vs. a Conventional Thermal Plant No Site Emissions DHW Pre-Heat System Provides Balanced Load for Minimal Long-Term Ground Temperature Impact

  7. ApplicationsSecured Facility, Critical Load CostsDistrict Shares Capital Costs Market District Energy Performance Load Diversity Impact of the SW 40th TEF Geothermal System • Introduction of Geothermal Technology to District Energy Market • Demonstration of Reduction in Energy Consumption & Cost • Future Expansion Allows Versatility of Plant Growth Options • Data Collections to Support Application of Geothermal Technologies in District Energy Systems

  8. Overview of Budget & Funding • $5 million ARRA Grant Received from Department of Energy in 2009 • Requires Quarterly and Annual Progress Reports • Data Reporting for 3 Years Following Project Completion • Buy America Act Compliance • Davis-Bacon Act Compliance • Funds expended through March 2011 = $11,455,993 • DOE Share = $3,260,341 • DEC Share = $8,195,652 Total Estimated Project Cost $20,132,824 Geothermal System

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