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
Office Buildings | Feb 23, 2015
The importance of quiet and the consequences of distraction
Recent work style studies show that the average knowledge worker spends 25-35% of their time doing heads-down focused work. Once thrown off track, it can take some 23 minutes for a worker to return to the original task.
Modular Building | Feb 23, 2015
Edge construction: The future of modular
Can innovative project delivery methods, namely modular construction, bring down costs and offer a solution for housing in urban markets? FXFOWLE’s David Wallance discusses the possibilities for modular.
| Feb 23, 2015
6 trends changing the way city dwellers live
Across the cultural grid, from food to retail to transportation, America's urban areas are already undergoing a major metamorphosis. Here are the six major trends shaping our cities, from Fast Company.
Green | Feb 23, 2015
State of the green union, and the next big shift in sustainability
The history of the green movement offers cues that we are on the precipice of another significant shift in the green union.
| Feb 23, 2015
Where are the iconic green buildings?
What does a green building look like? How would you know one if you saw one? Maybe a trivial question to some, but of great interest to architects, designers, and other members of the Building Team as the rapid evolution of sustainable buildings continues apace.
Sports and Recreational Facilities | Feb 21, 2015
Pumped-up recreation centers help build body, mind, and spirit
Adopting facility layouts from Asian and European models, today’s sports and recreational buildings are becoming social hubs that accommodate a variety of community needs.
University Buildings | Feb 20, 2015
Penn strengthens campus security by reviving its surrounding neighborhood
In 1996, the University of Pennsylvania’s sprawling campus in Philadelphia was in the grip of an unprecedented crime wave. But instead of walling themselves off from their surrounding neighborhoods, the school decided to support the community.
Sports and Recreational Facilities | Feb 20, 2015
Chargers, Raiders propose joint stadium in Carson
Two rival teams may bring the NFL back to Los Angeles.
Cultural Facilities | Feb 20, 2015
‘Floating’ park on New York’s Hudson River moves one step closer to reality
The developers envision the 2.4-acre space as a major performance arts venue.
Multifamily Housing | Feb 19, 2015
Is multifamily construction getting too frothy for demand?
Contractors are pushing full speed ahead, but CoStar Group thinks a slowdown might be in order this year.