Analysis of daylighting control systems in 20 office and public spaces in Minnesota and Wisconsin shows that while the automatic daylight harvesting schemes are helping to reduce lighting energy in the buildings, most are not achieving optimal performance, according to a new study by the Energy Center of Wisconsin (ECW).
According to ECW, the median daylighting control system studied was saving 23% of lighting energy, including impacts on heating and cooling. This translated to 915 kWh saved for every kW of lighting controlled. But the average effectiveness (the energy saved versus energy saved with ideal control) of the controls was only 51%. This meant that almost half of the potential savings from these controls was not captured due to imperfect controls operation. Even worse, four of the 20 spaces studied had zero savings.
The low level of effectiveness, says ECW, is evidence of a lack of controls execution. The findings show that successful implementation of automatic daylighting control requires a significant commissioning effort to reach full energy-savings potential.
Read the full daylighting commissioning report from the Energy Center of Wisconsin.
As part of the report, ECW developed a tip sheet on commissioning and calibration and function testing of lighting controls. Recommendations include assigning a single person of the construction team to be responsible for verifying completion of all steps in the daylighting commissioning process, and proper training of the building owner/operator on the controls equipment and systems. Download the tip sheet (PDF)
(http://www.ecw.org/project.php?workid=1&resultid=494)
Related Stories
| May 2, 2014
Top 10 countries for LEED buildings outside the U.S.
The list of the top 10 countries for LEED reflects the global adaptability of the world’s most widely used and recognized system guiding the design, construction, operations and maintenance of green buildings.
| May 1, 2014
First look: Cal State San Marcos's posh student union complex
The new 89,000-sf University Student Union at CSUSM features a massive, open-air amphitheater, student activity center with a game lounge, rooftop garden and patio, and ballroom space.
| May 1, 2014
Super BIM: 7 award-winning BIM/VDC-driven projects
Thom Mayne's Perot Museum of Nature and Science and Anaheim's new intermodal center are among the 2014 AIA TAP BIM Award winners.
| May 1, 2014
Tight on space for multifamily? Check out this modular kitchen tower
The Clei Ecooking kitchen, recently rolled out at Milan's Salone de Mobile furniture fair, squeezes multiple appliances into a tiny footprint.
| May 1, 2014
Chinese spec 'world's fastest' elevators for supertall project
Hitachi Elevator Co. will build and install 95 elevators—including two that the manufacturer labels as the "world's fastest"—for the Kohn Pedersen Fox-designed Guangzhou CTF Finance Center.
| Apr 30, 2014
Visiting Beijing's massive Chaoyang Park Plaza will be like 'moving through a urban forest'
Construction work has begun on the 120,000-sm mixed-use development, which was envisioned by MAD architects as a modern, urban forest.
| Apr 29, 2014
Best of Canada: 12 projects nab nation's top architectural prize [slideshow]
The conversion of a Mies van der Rohe-designed gas station and North Vancouver City Hall are among the recently completed projects to win the 2014 Governor General's Medal in Architecture.
| Apr 29, 2014
USGBC launches real-time green building data dashboard
The online data visualization resource highlights green building data for each state and Washington, D.C.
| Apr 29, 2014
Big U in the Big Apple: New design to protect New York City's coastline
Bjarke Ingels' proposed design for the Rebuild by Design competition adapts a key design principle in ship building to improve urban flood protection.
| Apr 28, 2014
Welcome to the Hive: OVA designs wild shipping container hotel for competition
Hong Kong-based OVA envisions a shipping-container hotel, where rooms could be removed at will and designed by advertisers.
