We had a chance to chat with Greg Whittemore and Chris Mundell of HKS Inc to learn about this impressive stadium and how the installation of the wind turbines came about.
INHABITAT: What were some of the synergies of design and technology that allowed your team to achieve LEED Platinum?
Chris Mundell: Reduction in energy consumption was a key goal for the Owner. Many issues were discussed for this project including use of energy efficient Mechanical/Electrical/Plumbing (MEP) equipment, a third-party Commissioning Authority reporting to the Owner, and on-site renewable energy systems. During the design of the project, the engineers created a preliminary energy model to assist the architects with the design of the building envelope.
Additional energy reduction strategies included use of advanced lighting controls, mechanical shades controlled by the Building Automatic System (BAS), total enthalpy energy recovery wheels, and differential enthalpy economizers. Lighting power density was managed down to .84 watts per square foot. Another important issue was how to maintain the stadium during non-game days. Sequence of operations and temperature set points were established that reduced the operation of MEP systems when the building was not fully occupied. As a result, the project achieved over 25% energy reduction cost over the baseline model utilized from ASHRAE 90.1 – 2004.
For the site design, the team sought to minimize parking and instead promote a park-like setting around the stadium. This is particularly important considering there are approximately 340 days a year when the venue is not supporting a major event. Over 50% of the site was restored with native and adaptive plants. Other sustainable site strategies included the creation of retention ponds and the extensive use of permeable pavers for storm water mitigation. Such strategies reduced the potable water irrigation needs of the facility by 75%. Due to its location on the UNT campus, alternative transportation was available and encouraged. Campus shuttles, preferred parking spaces for carpooling and fuel efficient vehicles, and on-site secured bicycle storage racks were provided.