The addition of air curtains in the International Green Construction Code (IgCC), the new comprehensive high performance green building code, promises energy and construction cost savings for commercial, industrial and institutional buildings.
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. However, many times specifications are blocked by local jurisdictions that have adopted the International Energy Construction Code (IECC), which doesn't yet sight air curtains as vestibule alternatives.
Thus, the newly-enacted IgCC, which is scheduled for March 2012 publishing, now provides an approved overlay of green construction products to the base code IECC, which is overseen by the International Code Council, the Washington-based organization responsible for providing minimum safety, sustainability and affordability building codes and standards.
Recent proposals to the IgCC by the Air Movement and Control Association International (AMCA), Arlington Heights, Ill., helped establish air curtains as a vestibule alternative with the stipulation that they're tested in accordance with ANSI/AMCA Standard 220-05, "Laboratory Methods of Testing Air Curtains for Aerodynamics Performance Ratings."
Also helpful in the code modification effort were recent studies proving air curtains as 10% more energy-efficient than vestibules. The three-month research study “Air Curtains: A Proven Alternative to Vestibule Design” used second-party validation from research/validation consultant, Blue Ridge Numerics, Charlottesville, Va., with certified results from proven computational fluid dynamics (CFD) analysis.
Besides energy savings, vestibules, especially in retail settings, consume anywhere from 25 to 250 square feet of usable retail space and carry construction costs ranging from $3,750 to $37,500, based on an average of $150/square feet construction costs.
Meanwhile air curtain proponents will continue to present energy efficiency data to code committees, in hopes of instituting the vestibule alternative measure into the IECC. The next meeting on the subject is scheduled in January 2013.
Related Stories
High-rise Construction | Mar 4, 2015
Must see: Egypt planning 656-foot pyramid skyscraper in Cairo
Zayed Crystal Spark Tower will stand 200 meters tall and will be just a short distance from the pyramids of Giza.
Transit Facilities | Mar 4, 2015
5+design looks to mountains for Chinese transport hub design
The complex, Diamond Hill, will feature sloping rooflines and a mountain-like silhouette inspired by traditional Chinese landscape paintings.
Energy Efficiency | Mar 4, 2015
DOE launches crowdsourcing website for technology innovators
The Oak Ridge National Laboratory launched a new crowdsourcing website called the Buildings Crowdsoucing Community to collect and share ideas by innovators for energy-efficient technologies to use in homes and buildings.
Multifamily Housing | Mar 3, 2015
10 kitchen and bath design trends for 2015
From kitchens made for pet lovers to floating vanities, the nation's top kitchen and bath designers identify what's hot for 2015.
Office Buildings | Mar 3, 2015
Former DuPont lab to be converted into business incubator near UPenn campus
The new Pennovation Center will provide collaborative and research spaces for educators, scientists, students, and the private sector.
Sponsored | BIM and Information Technology | Mar 3, 2015
The great debate: Is 3D PDF really BIM?
You can pull apart buildings, cut through floors, and view simulated animation for assembly instructions all within a PDF.
K-12 Schools | Mar 2, 2015
BD+C special report: What it takes to build 21st-century schools
How the latest design, construction, and teaching concepts are being implemented in the next generation of America’s schools.
Codes and Standards | Mar 2, 2015
Proposed energy standard for data centers, telecom buildings open for public comment
The intent of ASHRAE Standard 90.4P is to create a performance-based approach that would be more flexible and accommodating of innovative change.
K-12 Schools | Mar 1, 2015
Are energy management systems too complex for school facility staffs?
When school districts demand the latest and greatest, they need to think about how those choices will impact the district’s facilities employees.
Office Buildings | Mar 1, 2015
Google unveils dramatic tent-like, modular-focused plan for corporate HQ
The master plan by Bjarke Ingels and Thomas Heatherwick will wrap highly flexible office blocks in soaring translucent canopies.