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• The plan provides shade on at least 30% of non-roof impervious <br />surfaces to reduce heat islands <br />Architectural and Mechanical Systems <br />• Reflective roof surfaces will be used to reduce heat islands' impact on <br />microclimate and to reduce solar heat gain <br />• Low E glass will be used in windows to promote day lighting while <br />minimizing heat loss and gain <br />• Water closets, urinals and lavatories will have sensors for flush valve <br />and water flow control. <br />• Chilled water systems provide very low kilowatt/ton of cooling, <br />relative to other air cooling systems <br />• The proposed central heating equipment will use two gas fired <br />condensing boilers. These units are highly efficient, particularly at <br />partial loading, <br />• A minimal number of large, modular, double wall, variable air volume <br />air handling units will be installed. The units will be configured for air <br />economizer operation to reduce energy consumption during mild <br />weather. Variable air volume systems consistently provide the lowest <br />life cycle cost, <br />• Most motors will be provided with variable frequency drives that will <br />reduce energy consumption for motors operating at part load <br />• Two solar hot water collectors will be used to reduce nahxral gas use <br />and to reduce heater installation costs. <br />Electrical Systems <br />• Occupancy sensing switches will be installed in the classrooms to turn <br />off lights in empty rooms, <br />• Light level sensors will be installed to reduce artificial light levels <br />when sufficient daylight is available <br />• T8 lamps and electronic ballasts, compact fluorescent, some HID <br />sources will be used to provide high efficiency lighting systems. <br />Day lighting <br />• The entire second floor and parts of the first floor will feature day <br />lighting, the use of natural light for lighting classrooms, <br />• This feature, coupled with the use of low kilowatt chilling systems, T-8 <br />lighting and sensors will reduce kilowatt use dramatically. In <br />comparison to other schools in the district, this would egxxal a 30% <br />kilowatt savings. <br />Using district kilowatt data, this would equate to a savings of 800,000 <br />kilowatts per year, According to the EPA, this electrical avoidance <br />would provide the following emissions reductions. <br />0 1,200,000 pounds of carbon dioxide per year <br />0 4,640,000 grams of sulfur dioxide per year <br />0 2,000,00 grams of nitrogen oxide per year <br />