2024 ASHRAE TECHNOLOGY AWARDS CASE STUDY staff to order and stock one filter size that can easily be applied throughout the building. Rooftop equipment access was also a concern, so only the kitchen refrigeration unit skid is located on the roof, installed adjacent to a parapet wall to eliminate the need for fall protection. The kitchen Type II exhaust hood is installed in a sidewall configuration for easy access from the ground level. COST EFFECTIVENESS Numerous cost-savings and shifting measures were evaluated to ensure this facility could be constructed within the traditional budget of an elementary school in the area. The design team worked to eliminate rooftop equipment to maximize available roof space for renewable energy. This reduced the cost of renewable energy by removing the need for ground-mounted solar panels, which are more expensive to install than selfballasted rooftop panels. To further help reduce energy consumption and HVAC system installation costs, the building envelope was pressure tested to a goal of 0.15 cfm/ft2 (0.76 L/s·m2). Several lighting and mounting height strategies were analyzed during the design phase. This study examined effective lighting levels, first costs and energy use, resulting in a 55% reduction in installed lighting power density compared to the ASHRAE Standard 90.1-2010 requirements. ENVIRONMENTAL IMPACT The drastic energy reduction and cost savings measures implemented in the design allowed the building to pursue zero-energy certification costeffectively. The building is equipped with a 650 kW solar array on the roof, which was installed by a third party under a power purchase agreement and was completed in January 2024. Having the building operate for a year allows for system optimization, helping the team rightsize the photovoltaics to achieve zero energy costeffectively. The resulting energy and carbon reduction strategies implemented have removed 1500 metric tons of CO2 emissions compared to the previous school that stood on this site. welding not in the schedule Keep your project going with no weld BOLT-IN ADJUSTABLE Support FRAMES quickframes.com Handbook Online Access all four ASHRAE ASHRAE Members may qualify for special discounts. ashrae.org/handbookonline Handbook volumes across your devices with A U G U ST 2 0 2 4 ashrae.org ASHRAE JOURNAL 59http://www.quickframes.com http://www.ashrae.org/handbookonline http://www.ashrae.org