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
| Jul 21, 2014
Workplace trends survey reveals generational patterns in office use
Data analysis from Mancini•Duffy indicates significant variations among age cohorts in the workplace.
| Jul 20, 2014
IPD contract saves time and money for cancer center [2014 Building Team Awards]
Partners share the risk and reward of extreme collaboration on this LEED Silver project, which relies heavily on Lean principles.
| Jul 20, 2014
Why every major U.S. city should be nurturing ‘Innovation Hubs’
Today, more than ever, tech districts are the key to economic growth for metro markets. A new report from the Brookings Institution calls tech hubs the superchargers of innovation economies and creators of highly coveted tech jobs.
| Jul 18, 2014
Contractors warm up to new technologies, invent new management schemes [2014 Giants 300 Report]
“UAV.” “LATISTA.” “CMST.” If BD+C Giants 300 contractors have anything to say about it, these new terms may someday be as well known as “BIM” or “LEED.” Here’s a sampling of what Giant GCs and CMs are doing by way of technological and managerial innovation.
| Jul 18, 2014
Top Construction Management Firms [2014 Giants 300 Report]
Jacobs, Barton Malow, Hill International top Building Design+Construction's 2014 ranking of the largest construction management and project management firms in the United States.
| Jul 18, 2014
Top Contractors [2014 Giants 300 Report]
Turner, Whiting-Turner, Skanska top Building Design+Construction's 2014 ranking of the largest contractors in the United States.
| Jul 18, 2014
Engineering firms look to bolster growth through new services, technology [2014 Giants 300 Report]
Following solid revenue growth in 2013, the majority of U.S.-based engineering and engineering/architecture firms expect more of the same this year, according to BD+C’s 2014 Giants 300 report.
| Jul 18, 2014
Top Engineering/Architecture Firms [2014 Giants 300 Report]
Jacobs, AECOM, Parsons Brinckerhoff top Building Design+Construction's 2014 ranking of the largest engineering/architecture firms in the United States.
| Jul 18, 2014
Top Engineering Firms [2014 Giants 300 Report]
Fluor, Arup, Day & Zimmermann top Building Design+Construction's 2014 ranking of the largest engineering firms in the United States.