Achieving Zero Energy on Discovery has led APS to set new energy performance goals on all future projects. Where feasible, Zero Energy will be a goal of every project.
One of the Most Sustainable Schools in the Nation
The Fayette County Public Schools Locust Trace Agri-Science Campus was designed to produce more energy than it consumes annually. The campus houses two main facility buildings of over 70,000 green square feet. The energy efficient design aims to improve Occupant Health and Wellness by providing access to natural daylight through large windows and solatubes and supports classroom daylight harvesting systems. Outside air is brought into the building through a Variable Volume Energy Recovering Ventilator that is controlled using a CO2 monitoring system called Aircuity. All areas employ distributed intelligent lighting control systems, which also control user plug loads. Each classroom is heated and cooled via an earth coupled geo-exchange water source heat pump with integral hot water coils fed from the solar thermal system mounted on the roof for the majority of the heating load.
CMTA implemented its Data Driven Design approach to design the buildings efficiently and drastically reduce energy consumption to require a smaller roof-mounted photovoltaic (PV) system and solar thermal arrays. The PV array size of 175KW is designed to generate enough electrical power to offset all site power usage and become Net Zero site consumption. The solar thermal array will provide heat for three building systems, including domestic hot water for all showers and lavatories. The additional energy acquired by the thermal array in the cooling months allows the regeneration of the geothermal well field to offset for the building heating load which is disproportionate to the cooling load. The end result is a Zero Energy academic campus producing more energy than it consumes each year.