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
| Sep 29, 2014
Living Building vs. LEED Platinum: Comparing the first costs and savings
Skanska USA's Steve Clem breaks down the costs and benefits of various ultra-green building standards and practices.
| Sep 29, 2014
10 common deficiencies in aging healthcare facilities
VOA's Douglas King pinpoints the top issues that arise during healthcare facilities assessments, including missing fire/smoke dampers, out-of-place fire alarms, and poorly constructed doorways.Â
| Sep 29, 2014
Snøhetta releases final plan for terraced central library in Calgary
The competition-winning New Central Library is now in the final design stages, after two years of community engagement on the part of design firms Snøhetta and DIALOG.Â
| Sep 25, 2014
Jean Nouvel unveils plans for National Art Museum of China
Of the design, Nouvel describes it as inspired by the simplicity of “a single brush stroke.”Â
Sponsored | | Sep 25, 2014
Your business doesn’t always need to change
By now, the idea that organizations must adapt to maintain both relevance and market share is so ingrained that it’s been reduced to pithy sayings. But is constant adaptation always the best policy? SPONSORED CONTENT
| Sep 25, 2014
Bjarke Ingels headed home for latest project: Aarhus Island
Aarhus Island will be a waterside development in Denmark's second-largest city. The mixed-use development will implement Ingels' signature angled look in its residential towers.
| Sep 24, 2014
Must see: Semi-submerged hotel planned for Qatar's man-made island
Plans for a new hotel in the Persian Gulf are taking Dubai’s Palm Islands concept to a whole new level—underwater, that is.
| Sep 24, 2014
5 business lessons from a 43-year Star veteran
Mary Ed Cain was supposed to be born a boy. That was the first time she surprised everyone. The second time came on a daily basis during her 43-year career at Star Building Systems. SPONSORED CONTENT
| Sep 24, 2014
Architecture billings see continued strength, led by institutional sector
On the heels of recording its strongest pace of growth since 2007, there continues to be an increasing level of demand for design services signaled in the latest Architecture Billings Index.
| Sep 24, 2014
Frank Gehry's first building in Latin America will host grand opening on Oct. 2
Gehry's design for the Biomuseo, or Museum of Biodiversity, draws inspiration from the site's natural and cultural surroundings, including local Panamaian tin roofs.
