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
| Dec 27, 2011
Suffolk Construction celebrates raising of Boston Tea Party Ships & Museum cupola
Topping off ceremony held on 238th Anniversary of Boston Tea Party.
| Dec 27, 2011
State of the data center 2011
Advances in technology, an increased reliance on the Internet and social media as well as an increased focus on energy management initiatives have had a significant impact on the data center world.
| Dec 27, 2011
USGBC’s Center for Green Schools releases Best of Green Schools 2011
Recipient schools and regions from across the nation - from K-12 to higher education - were recognized for a variety of sustainable, cost-cutting measures, including energy conservation, record numbers of LEED certified buildings and collaborative platforms and policies to green U.S. school infrastructure.
| Dec 21, 2011
DOE report details finance options for PV systems in schools
The report examines the two primary types of ownership models used to obtain PV installations for school administrators to use in selecting the best option for deploying solar technologies in their districts.
| Dec 21, 2011
AIA Chicago & AIA Chicago Foundation 2011 Dubin Family Young Architect Award announced
The Dubin Family Young Architect Award is bestowed annually and recognizes excellence in ability and exceptional contributions by a Chicago architect between the ages of 25 and 39.
| Dec 21, 2011
Few silver linings for construction in 2012
On the brighter side, nearly half of respondents (49.7%) said their firms were in at least “good” financial health, and four-fifths (80.2%) said their companies would at least hold steady in revenue in 2012.
| Dec 21, 2011
Hoboken Terminal restoration complete
Restoration of ferry slips, expanded service to benefit commuters.
| Dec 21, 2011
BBI key to Philly high-rise renovation
The 200,000 sf building was recently outfitted with a new HVAC system and a state-of-the-art window retrofitting system.
| Dec 20, 2011
Gluckman Mayner Architects releases design for Syracuse law building
The design reflects an organizational clarity and professional sophistication that anticipates the user experience of students, faculty, and visitors alike.
| Dec 20, 2011
Research identifies most expensive U.S. commercial real estate markets
New York City, Washington, D.C. and San Mateo, Calif., rank highest in rents.
