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 16, 2013
As the U.S. economy sputters back to life, contractors wait for the green light on projects [2013 Giants 300 Report]
There are enough positive indictors in the economy to justify greenlighting projects, but building owners and developers remain reluctant to pull the trigger.
| Jul 16, 2013
Robotics: A new way to demolish buildings
A robot prototype uses water jets to break up concrete structures and then sucks up the water and debris for reuse and recycling.
| Jul 15, 2013
Mergers and acquisitions transform engineering sector [2013 Giants 300 Report]
Merger and acquisition deals by MEP, commissioning, structural, and specialty engineering firms were up 14% nationwide in 2012 compared with 2011.
| Jul 15, 2013
Top Engineering/Architecture Firms [2013 Giants 300 Report]
Jacobs, AECOM, Parsons Brinckerhoff top Building Design+Construction's 2013 ranking of the largest engineering/architecture firms in the United States.
| Jul 15, 2013
Top Architecture/Engineering Firms [2013 Giants 300 Report]
Stantec, HOK, HDR top Building Design+Construction's 2013 ranking of the largest architecture/engineering firms in the United States.
| Jul 15, 2013
Top Architecture Firms [2013 Giants 300 Report]
Gensler, Perkins+Will, NBBJ top Building Design+Construction's 2013 ranking of the largest architecture firms in the United States.
| Jul 15, 2013
Zaha Hadid unveils plan for boutique condo development in New York
Related Companies taps the London-based architect for the 11-story 520 West 28th Street residential development adjacent to the High Line in Chelsea.
| Jul 12, 2013
12 award-winning healthcare projects [slideshow]
AIA's Academy of Architecture for Health announced the recipients of the 2013 AIA National Healthcare Design Awards.
| Jul 11, 2013
Bill to borrow more for college spending in Michigan criticized due to ‘higher-ed bubble’
An amendment to a Michigan appropriations budget authorizes an increase in state debt to pay for state university construction projects. But some experts see a “higher education bubble” on the horizon, and said more taxpayer debt for more buildings is a bad idea.