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
| Feb 16, 2012
TLC Engineering for Architecture opens Chattanooga office
TLC Engineering for Architecture provides mechanical, electrical, structural, plumbing, fire protection, communication, technology, LEED, commissioning and energy auditing services.
| Feb 16, 2012
Summit Design + Build begins build-out for Emmi Solutions in Chicago
The new headquarters will total 20,455 sq. ft. and feature a loft-style space with exposed masonry and mechanical systems, 15 foot clear ceilings, two large rooftop skylights and private offices with full glass partition walls.
| Feb 16, 2012
Highland named president of McCarthy Building Companies’ California region
Highland moved into this new role in January 2012 following a six-month transition period with Carter Chappell, the company’s former president, California region.
| Feb 16, 2012
Big-box retailers not just for DIYers
Nearly half of all contractor purchases made from stores like Home Depot and Lowe's.
| Feb 16, 2012
4.8-megawatt solar power system completed at Jersey Gardens Mall
Solar array among the largest rooftop systems in North America.
| Feb 15, 2012
Fourth-generation Ryan to lead Ryan Companies AE team
Ryan leads a team of eight architects, four civil engineers, two landscape architects and two virtual building specialists in their efforts to realize their customer’s vision and needs through Ryan’s integrated project delivery system.
| Feb 15, 2012
NAHB sees gradual improvement in multifamily sales for boomers
However, since the conditions of the current overall housing market are limiting their ability to sell their existing homes, this market is not recovering as quickly as might have been expected.
| Feb 15, 2012
Skanska secures $87M contract for subway project
The construction value of the project is $261.9 M. Skanska will include its full share, $87 M, in the bookings for Skanska USA Civil for the first quarter 2012.
| Feb 15, 2012
Code allowance offers retailers and commercial building owners increased energy savings and reduced construction costs
Specifying air curtains as energy-saving, cost-cutting alternatives to vestibules in 3,000-square-foot buildings and larger has been a recent trend among consulting engineers and architects.
| Feb 15, 2012
Englewood Construction announces new projects with Destination Maternity, American Girl
Englewood’s newest project for Wisconsin-based doll retailer American Girl, the company will combine four vacant storefronts into one large 15,000 square-foot retail space for American Girl.
