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3. Lighting and Equipment Schedules <br /> Electrical lighting power densities were modeled in accordance with space assignments and typical <br /> lighting power densities for each space. Domestic hot water usage was modeled based upon occupancy <br /> and schedules in accordance with all space assignments. All electrical lighting and equipment uses, <br /> annual domestic hot water consumption, occupancy rates and schedules, and building envelope <br /> characteristics were modeled identically for both the existing building system and the proposed system. <br /> Hl/AC Distribution Systems <br /> The existing system and zoning was modeled according to the current building operation. Scheduled <br /> equipment efficiencies were used with derating factors to model the existing equipment based on the type <br /> of equipment and its age. <br /> The calibrated model was used to create an energy simulation that produced energy consumption values <br /> that matched the actual energy consumption for the building based on the utility bills provided by the <br /> owner. <br /> 005.10.01 Page 6 of 18 City of Orono <br /> May 28,2010 Geothermal HVAC Feasibility Study <br /> engineers � consultants � commissioning <br /> MEP Associates, LLC� 7607 Equitable Drive,Eden Prairie,MN 55344�phone:952.224.4488 fax:952.224.4489�www.mepassociates.com <br />