A group of commercial manufacturers supported by International Association of Plumbing and Mechanical Officials (IAPMO) and members of the Hydronics Industry Alliance, a Committee of the Radiant Professionals Alliance, have released BEST: The Building Efficiency System Tool.
Available free of charge, BEST allows users to accurately compare different styles of HVAC systems. HVAC systems are all tested to different standards, with various efficiency ratings (EER, IEER, SEER, COP, HSPF), as they are applied in an actual building.
BEST uses the Building Energy Efficiency Ratio (BEER), which takes certified AHRI data, manufacturers’ published performance data at multiple performance points, as-applied correction factors, performance curves for components, pipe and duct required in a typical system. It combines these elements to bridge the gap between certified equipment efficiencies and real-world building system efficiencies.
Users enter the square footage of the building, the number of stories, and the nearest city for local weather data, and then choose up to four types of HVAC systems to compare from more than 30 pre-loaded systems.
BEST features more than 100 default input settings, including system cost per square foot (provided by more than 50 contractors around the U.S.), each of which are adjustable to model any building in any location. BEST outputs estimated installation cost, replacement cost, maintenance cost, monthly energy cost, electrical and fossil fuel consumption costs, total life cycle cost, cumulative life cycle cost by year, system payback time (as compared with other modeled systems), pump and fan HP, system integrated energy efficiency ratio (IEER), coefficient of performance (COP), and more.
Related Stories
| Dec 22, 2011
Group developing BIM data standards
A collaboration among Georgia Tech’s Digital Building Lab, the Precast Concrete Institute, the American Concrete Institute, and the American Institute of Steel Construction aims to develop global standards for transportation of three-dimensional digital models among fabricator, architecture, engineering, and construction groups.
| Dec 22, 2011
New green code spells out thermal requirement for roof retrofits
The 2012 International Green Construction Code (IgCC) includes a straightforward approach to minimum thermal requirements for roof and wall systems.
| Dec 22, 2011
AGC’s safety conference Jan. 11-13 in San Antonio
The Associated General Contractors of America’s national meeting for safety and health professionals will take place Jan. 11-13, 2012 in San Antonio, TX.
| Dec 22, 2011
Proposed New York City zoning revamp encourages rooftop solar and wind energy
New zoning regulation proposals to make it easier for building owners in New York City to make their structures more sustainable have entered the public approval process.
| Dec 15, 2011
Dayton, Ohio schools saving $2.6 million annually by building to LEED
On average, green schools save about $100,000 a year on operating costs, including energy and water savings.
| Dec 15, 2011
Building to LEED standards can pose new risks for construction workers
Workers on these projects suffer a 24% increase in falls to lower levels during roof work, which researchers attributed to the installation of solar panels, and a few other risks.
| Dec 15, 2011
NRDC charges Maine governor with weakening green wood requirement
The FSC program is administered through the Leadership in Energy and Environmental Design (LEED) and requires wood to be harvested in a sustainable way.
| Dec 15, 2011
Post-tornado, Tuscaloosa seeks to create walkable urban, retail areas
Block sizes initially were limited to a maximum perimeter of 1,750 feet, with no side of the block being longer than 500 feet.
| Dec 15, 2011
Allentown, Pa. city council asked to repeal union-friendly law
The mayor of Allentown, Pa. asked the City Council to repeal a year-old ordinance that forces contractors to hire union workers for large city projects funded with state and federal dollars.
| Dec 13, 2011
LEED-EB outpaces LEED for new construction
The U.S. Green Building Council's (USGBC's) LEED certifications for existing buildings standard is outpacing LEED for new buildings for the first time.
