Net-zero may seem beyond the budgets of most K-12 school districts, but a couple of trailblazers have found the means to construct schools designed to produce as much power as they use.
The new $20 million, 88,693-sf Colonel Smith Middle School in Ft. Huachuca, Ariz., takes daylighting to the highest level. Every regularly occupied space has a window, skylight, or clerestory glazing for layered daylighting. To hold down the cooling load, the building obtains most of its sunlight from the north sky through clerestory windows. On the south exterior wall, exterior overhangs prevent direct solar exposure in the summer, while allowing passive solar heating in winter. Locker rooms and other support spaces have shaded high-wall translucent fiberglass panels to provide privacy. Lighting energy use is expected to be 80% less than that of a standard school building.
Energy is recovered from locker room exhaust to pre-heat or pre-cool supply air delivered to locker rooms. Solar panels heat domestic water for locker rooms and the kitchen. PVs were obtained through a power purchase agreement. “We didn’t have net-zero in mind when we were starting out,” notes Dr. Ronda Frueauff, Superintendent of the Ft. Huachuca Accommodation School District. That changed as the design committee evaluated the affordability of each green element. Only geothermal was ruled out as cost-prohibitive.
Geothermal is, however, a key component of the Lady Bird Johnson Middle School in Irving, Texas, with 530 geothermal wells and 105 water-source heat pumps. The school is powered by 2,988 rooftop solar panels and 12 wind turbines. Opened in August 2011, the $29 million, 152,000-sf school cost about 12% more to build than one of traditional construction. School officials expect to recoup their investment in 10-12 years.
“We didn’t have net-zero in mind when we were starting out.”
--Dr. Ronda Frueauff, Superintendent of the Ft. Huachuca Accommodation School District.
Both schools incorporate green features into lesson plans. The Texas school features museum-type displays along the main hallway highlighting geothermal, solar, and wind technology, along with water efficiency. Students can get a close-up view of the PVs from a roof observation deck.
Getting to net-zero is not easy, but the promise of eliminating energy bills and using state-of-the-art technology as a learning lab can make a compelling case to reach for net-zero. +
Related Stories
| Apr 15, 2013
Seattle school certified as world's fourth Living Building
Bertschi School, an independent elementary school in the Capitol Hill neighborhood of Seattle, Wash., is now home to the first Living Building on the West Coast and the world’s fourth fully-certified Living Building.
| Apr 15, 2013
Advanced lighting controls and exterior tactics for better illumination - AIA/CES course
To achieve the goals of sustainability and high performance, stakeholders in new construction and renovation projects must rein in energy consumption, including lighting. This course presents detailed information about lighting control strategies that contribute to energy efficient buildings and occupant well-being, as well as tips for lighting building exteriors effectively and efficiently.
| Apr 15, 2013
eBay, Microsoft, Walt Disney World among keynote speakers for 2013 SMPS Conference, July 31 – August 2 in Orlando
The Society for Marketing Professional Services (SMPS) is pleased to announce the keynote speakers for ?Build Business: Dream Big!,? its 2013 conference to be held July 31 – August 2 at the Walt Disney World® Swan and Dolphin in Orlando.
| Apr 15, 2013
Using software and the power of the cloud to connect your back office to your field operations [webinar]
This webinar will focus on a new software subscription service that will help construction companies, general and specialty contractors connect their back office infrastructure with all of their field operations. The service will help capture, manage and report on the progress of existing construction jobs and help in the planning of new ones.
