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
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.
Industrial Facilities | Feb 27, 2015
Massive windmill will double as mixed-use entertainment tower in Rotterdam
The 571-foot structure will house apartments, a hotel, restaurants, even a roller coaster.
Architects | Feb 27, 2015
5 finalists announced for 2015 Mies van der Rohe Award
Bjarke Ingels' Danish Maritime Museum and the Ravensburg Art Museum by Lederer Ragnarsdóttir Oei are among the five projects vying for the award.
